bluuebunny/crossref_metadata_2025 huggingface dataset:
Phase-Compositional and Morphological Control of Titania Nanoparticles via Low Temperature Dissolution-Reprecipitation Process in Liquid Media
Authors: Yin Shu , Hasegawa Hitoshi , Sato Tsugio
Published: September 2002

Rutile or anatase nanocrystals were prepared by a “low temperature dissolution-reprecipitation process” (LTDRP) in HCl or H2SO4 solutions around room temperature. The reprecipitation temperature and organic solvent addition in the solution system greatly affected the phase composition of the final powders. The phase compositional and morphological control of the final powders might be realized by applying a washing operation followed by a hydrothermal treatment in liquid media.
Reducing Surfactants–Silica Interactions for High-Coverage Silane-Modification of MCM-41 and MCM-48 Silicas
Authors: Lin Hong-Ping , Shih Pei-Chun , Liu Yi-Hsin , Mou Chung-Yuan
Published: September 2002

Reducing surfactants-silica interactions in the acid solution provides a novel and efficient strategy for obtaining high-coverage silanes grafted MCM-41 or MCM-48 mesoporous materials and a simultaneous recovery of the surfactants under a mild modification condition.
Preparation of Heteronuclear Bi1-xLax[Fe(CN)6]·n(H2O) Complexes and their Thermal Decomposition
Authors: Aono Hiromichi , Nakano Satoshi , Kondo Nobuyuki , Katagishi Haruo , Sakamoto Masatomi , Asato Eiji , Sadaoka Yoshihiko
Published: September 2002

The heteronuclear Bi1-xLax[Fe(CN)6]·nH2O complexes were synthesized and their crystal structures were investigated by XRD and TGA. The crystal phase was hexagonal (n=5) for x=1.0, and orthorhombic (n=4) for x=0–0.7 and their mixture (x=0.8 and 0.9). The lattice constants for the complexes linearly increased with an increase in the x value. The single phase of the trimetallic perovskite-type Bi0.5La0.5FeO3 was obtained by its thermal decomposition at 500 °C.
Colorimetric Detection of Human Lung Carcinoma Cell by Enlarging Au-Nanoparticles in situ
Authors: Ma Zhanfang , Liang Rong , Jiang Wuling , Zhou Tianhong , Chen Zhihua , Duan Mingxing , Tang Jintian , Sui Sen-fang
Published: September 2002

A new approach to the colorimetric detection of human lung carcinoma cell by enlarging Au-nanoparticles in situ has been reported. The results show that the sensitivity of detecting lung carcinoma cell is ca. 100 cell mL-1. By enlarging Au-nanoparticles immobilized on the nitrocellulose strips in situ with 0.01% HAuCl4 and 0.4 mM NH2OH, detection of lung carcinoma cell by naked eye is available. It will be of great significance in rapid and early clinical diagnosis.
Thermal Cycloreversion Reaction of a Photochromic Dithienylperfluorocyclopentene with tert-Butoxy Substituents at the Reactive Carbons
Authors: Morimitsu Kentaro , Shibata Katsunori , Kobatake Seiya , Irie Masahiro
Published: September 2002

tert-Butoxy groups were introduced at 2 and 2′-positions of the thiophene rings of a dithienylperfluorocyclopentene to prepare a photochromic compound with a thermal cycloreversion reactivity and a low photocycloreversion quantum yield. The cycloreversion quantum yield was similar to the isopropyl-substituted derivative and the half-life time of the colored isomer at 100 °C was 8 s.
Recovery of Stacking Height of Mesophase Pitch Fiber by Solid-Phase Annealing
Authors: Yang Hojung , Yoon Seong-Ho , Korai Yozo , Mochida Isao , Katou Osamu
Published: September 2002

The solid-phase annealing at temperatures higher than glass transition temperature (Tg) was found effective to recover or further improve the stacking of naphthalene and methylnaphthalene mesophase pitch fibers, maintaining the morphology of their fiber form. Thermal behaviors of mesophase pitches were examined to describe thermal changes of molecular stacking in its solid state and to clarify their significance on their nanoscopic structure.
A One-dimensional Nickel(III) Chain Complex Showing Ferromagnetic Ordering: Crystal Structure and Magnetic Property
Authors: Xie Jingli , Ren Xiaoming , Gao Song , Meng Qingjin
Published: September 2002

A ferromagnetic complex [BrFBzPy][Ni(mnt)2], where [BrFBzPy]+=1-(4′-bromo-2′-fluorobenzyl)pyridinium and mnt2-=maleonitriledithiolate, has been prepared. The [Ni(mnt)2]- anions and [BrFBzPy]+ cations form a well-separated stacking column and [Ni(mnt)2]- anions are uniformly spaced to give a one-dimensional (1-D) chain structure. Its magnetization studies shown it ferromagnetically ordered around 2 K.
Evidence for Transmetalation of Zirconacyclopentadiene to Cobalt Complex
Authors: Wang Hui , Tsai Fu-Yu , Nakajima Kiyohiko , Takahashi Tamotsu
Published: September 2002

Transmetalation reaction of zirconacyclopentadienes with cobalt(III) complex, CpCo(PPh3)I2, proceeded to afford (cyclobutadiene)cobalt(I) complexes, CpCo(C4R4). The structure of one of the cobalt complexes was verified by X-ray structure analysis.
Synthesis and Physical Property of a Novel Diarylethene Derivative Having a Chryso[b]thiophene Ring
Authors: Yamaguchi Tadatsugu , Kashiyama Hideki , Nakazumi Hiroyuki , Yamada Taro , Irie Masahiro
Published: September 2002

A novel type diarylethene derivative having a chryso[b]thiophenes ring has been synthesized and its photochromic reaction has been studied in ethyl acetate.
Electronic Structure of Group III Elements Doped into ZnO by Using Molecular Orbital Calculation
Authors: Nonaka Moriyasu , Matsushima Shigenori , Mizuno Masataka , Kobayashi Kenkichiro
Published: September 2002

The electronic structures of ZnO doped with group III elements (B, Al, Ga and In) are calculated by using the discrete variational Xα method of clusters. For ZnO doped with group III elements, new states originating from group III elements appear in the band gap. The depth energy of impurity-related states is the shallowest for Al and is the deepest for B.
Selective Nitrous Oxide Oxidation for C-H Oxidation and Aromatization of 9,10-Dihydroanthracene Derivatives
Authors: Hashimoto Kentaro , Tanaka Hirotaka , Ikeno Taketo , Yamada Tohru
Published: September 2002

During the nitrous oxide oxidation of 9,10-dihydroanthracene derivatives catalyzed by the ruthenium-porphyrin complexes, anthraquinones were selectively afforded by the C-H oxidation of the benzylic carbon under the appropriate reaction conditions, whereas anthracenes as a result of oxidative aromatization were selectively obtained in the presence of sulfuric acid.
Preparation of Highly Ordered Well-defined Single Crystal Cubic Mesoporous Silica Templated by Gemini Surfactant
Authors: Zhang Zhendong , Tian Bozhi , Shen Shaodian , Fan Jie , Tu Bo , Kong Qingyi , Xiao Fengshou , Qiu Shilun , Zhao Dongyuan
Published: September 2002

Highly ordered well-defined single crystal cubic mesoporous silica SBA-1 has been synthesized under static acidic conditions at room temperature by using gemini surfactant as a structure-directing agent.
Capture of Chromate and Arsenate by Amino Groups in Functionalised SBA-1
Authors: Yoshitake Hideaki , Yokoi Toshiyuki , Tatsumi Takashi
Published: September 2002

Mono-, di-, and triamino ligands fixed on SBA-1 mesoporous silica capture chromate and arsenate effectively in a fashion where the saturation stoichiometries (Cr/N and As/N) depend on the type of ligand. Extraordinary adsorption capacities were achieved: 211 and 263 mg/g-adsorbent for chromate and arsenate, respectively.
Fabrication of High Surface Area Fibrous TiO2 with Well-defined Mesostructures via a Nonsurfactant Approach
Authors: Guo Chang-Wen , Cao Yong , Dai Wei-Lin , Fan Kang-Nian , Deng Jing-Fa
Published: September 2002

Fibrous anatase titania with a high surface area and well-defined mesostructures has been prepared by precipitating of titanium tetrachloride (TiCl4) with ammonia in the presence of acetic acid as the liquid dispersion medium.
Intramolecular Charge Interaction in the Radical Cations and Dications of Conjugated Tetrathiafulvalene Dimers
Authors: Iyoda Masahiko , Hasegawa Masashi , Takano Jun-ichi , Hara Kenji , Kuwatani Yoshiyuki
Published: September 2002

Dimeric TTFs have been synthesized by using palladium-catalyzed reactions. Although TTFs are very sensitive under oxidation conditions, the palladium-catalyzed reactions can be successfully employed for the oxidative coupling of TTF derivatives. The chemical oxidation of dimeric TTFs produced cation-radicals, dications, and tetracations selectively. Electronic spectra of the cation-radicals clearly indicate the magnitude of the intramolecular interaction between two TTF moieties.
Synthesis of Diazafluorene-functionalized TTF Donors
Authors: Sako Katsuya , Misaki Yohji , Fujiwara Masahiro , Maitani Tatsuyuki , Tanaka Kazuyoshi , Tatemitsu Hitoshi
Published: September 2002

Synthesis and X-ray structure of novel ligands containing tetrathiafulvalene (TTF) are reported. These compounds have been prepared by condensation between diazafluorene coordination site and TTF moiety as conductivity site.
General Acid-Promoted Hydrolysis of Phosphate Ester in [ZnII(bnp)(tpa)](ClO4) (tpa=tris(2-pyridylmethyl)amine, bnp=bis(p-nitro-phenyl) phosphate); Plausible Functional Model for P1 Nuclease
Authors: Ito Masami , Fujita Koyu , Chitose Fumiaki , Takeuchi Takashi , Yoshida Kazuaki , Takita Yu-saku
Published: September 2002

The ZnII phosphate complex, [ZnII(bnp)(tpa)](ClO4) (2) was structurally characterized. The hydrolysis reaction of phosphate ester in 2 was promoted under acidic aqueous media efficiently. The relevancy of this system to P1 nuclease, which has a low optimal pH condition, is also discussed.
Formation of Self-Assembled Monolayer of Phenylthiol Carrying Nitronyl Nitroxide on Gold Surface
Authors: Matsushita Michio M , Ozaki Naoto , Sugawara Tadashi , Nakamura Fumio , Hara Masahiko
Published: September 2002

Novel disulfide-derivatized stable π-radical was prepared and it was found to form a dense self-assembled monolayer of π-radical thiols on a gold surface through a reductive cleavage of the S-S bond.
Chemical Modification of Chitosan 121: Synthesis of Organo-soluble Chitosan Derivatives toward Palladium Absorbent for Chemical Plating
Authors: Sashiwa Hitoshi , Kawasaki Norioki , Nakayama Atsuyoshi , Muraki Einosuke , Yamamoto Noboru , Arvanitoyannis Ioaunis , Zhu Hong , Aiba Sei-ichi
Published: September 2002

Toward the electromagnetic wave shielding materials for the electronic equipment, organo-soluble, palladium chelating, and biodegradable chitosan derivatives were successfully prepared.
Synthesis and Structures of p-tert-Butyltetrathiacalix[4]arene-dihydrides of Mo(IV) and W(IV)
Authors: Takemoto Shin , Otsuka Katsuya , Otsuka Takashi , Seino Hidetake , Mizobe Yasushi , Hidai Masanobu
Published: September 2002

The reaction of zero-valent molybdenum and tungsten dinitrogen complexes cis-[M(N2)2(PMe2Ph)4] (M = Mo, W) with 1 equiv of p-tert-butyltetrathiacalix[4]arene (TC4A(OH)4) gave novel dihydrido complexes [TC4A(OH)2(O2MH2 (PMe2Ph)3)] (M = Mo, W). The structures were determined by X-ray crystallography.
Synthesis and Liquid Crystal Phase Behaviour of 2-(4-Cyanophenyl)-7-n-alkylfluorenes: Luminescent Mesogens
Authors: Boardman Frederick H , Dunmur David A , Grossel Martin C , Luckhurst Geoffrey R
Published: September 2002

A new range of nematic liquid crystals containing the 2-phenylfluorene core has been prepared which may be considered as a model system for luminescent mesogens, which have potential interest as new display materials.
(R)-2,2′-Bis(stannyl)-1,1′-binaphthyls as a New Chiral Bis-Metallic Binaphthyl Catalyst
Authors: Hoshi Takashi , Shionoiri Hiroshi , Katano Masayoshi , Suzuki Toshio , Ando Masayoshi , Hagiwara Hisahiro
Published: September 2002

Dilithiation followed by bis-stannylation with Me3SnCl of (R)-2,2′-dibromo-1,1′-binaphthyl (2) and the subsequent redistribution reaction of resulting (R)-2,2′-bis(trimethylstannyl)-1,1′-binaphthyl (6) with SnCl4 gave the novel chiral Lewis acid catalyst (R)-2,2′-bis(dichloromethylstannyl)-1,1′-binaphthyl (4). The catalytic properties of 4 and its triflate 5 were investigated as the first chiral bis-metallic binaphthyl catalyst.
A Solid-State Reaction for the Synthesis of CdS Nanowires
Authors: Chen Yuan-tao , Guo Yun , Kong Ling-bin , Li Hu-lin
Published: September 2002

CdS nanowires have been successfully prepared by solid-state reaction of Cd(Ac)2·2.5H2O and Na2S·9H2O in the presence of PEG 400 at room temperature.
Porphyrin and Naphtalenediimide Functionalized Silica-gel Particles. Photophysical Properties
Authors: Rodrigues Magali A , Bemquerer Marcelo P , Politi Mário J , Brochsztain Sérgio , Miranda M Tersa M , Baptista Mauricio S
Published: September 2002

Silica-gel particles were functionalized with N,N′-bis(2-phosphoethyl)-1,4,5,8-naphthalene diimide (DPN) and meso-tetra(4-sulfonatophenyl) porphyrin (TSPP), by using phosphonate/sulfonate zirconium chemistry. The properties of the bound chromophores were shown to differ from their solution properties, with propensity to form either excimer or aggregates at the silica-gel surface for DPN and TSPP, respectively.
Palladium-Catalyzed Synthesis of 1-Azaazulenes from Cycloheptatrienylmethyl Ketone O-Pentafluorobenzoyl Oximes
Authors: Kitamura Mitsuru , Chiba Shunsuke , Saku Osamu , Narasaka Koichi
Published: September 2002

Substituted 1-azaazulenes are synthesized from cycloheptatrienylmethyl ketone O-pentafluorobenzoyloximes by the intramolecular Heck-type amination catalyzed by Pd(dba)2–(t-Bu)3P.
Dinuclear Copper(II) Complexes of Free Radical Carboxylic Acids
Authors: Mikuriya Masahiro , Azuma Hiroshi , Sun Jianmin , Yoshioka Daisuke , Handa Makoto
Published: September 2002

Copper(II) complexes of 4-carboxyl-2,2,6,6,-tetramethyl-piperidinyloxy (Hcatempo) and 3-carboxy-2,2,5,5-tetramethyl-1-pyrrolidinyloxy (Hcaproxy), [Cu2(catempo)4(H2O)2] (1) and [Cu2(caproxy)4(H2O)2] (2), have been synthesized and characterized by X-ray crystallography, electronic spectroscopy and magnetic susceptibility measurement.
Ruthenium Complexes Containing Fully Conjugated Ligands Terminated with Thiol Groups
Authors: Otsuki Joe , Kameda Hiroyuki , Tomihira Sota , Sakaguchi Hiroshi , Takido Toshio
Published: September 2002

Bipyridine- and terpyridine-based ruthenium complexes containing fully conjugated ligands terminated with thiol groups were prepared and immobilized in self-assembled monolayers of alkanethiolates on gold surface, single molecules of which were observed with scanning tunnelling microscopy.
Molecular Template Preparation of AgBiS2 Nanowhiskers
Authors: Xie Bo , Yuan Shengwen , Jiang Yang , Lu Jun , Li Qing , Wu Yue , Yu Weichao , Zhang Houbo , Qian Yitai
Published: September 2002

α-AgBiS2 nanowhiskers have been prepared by a solvothermal method at 160 °C. The characterized results showed that the product was α-AgBiS2 which was well crystallized as uniform nanowhiskers. The chain type structure of Bi-S compound under the circumstance of ethylenediamine was found crucial in the formation of α-AgBiS2 nanowhiskers in the possible mechanism.
A Simple, Effective, and Selective Synthesis Route for Difunctional 30-Membered Macrocyclic Ester and Linear Oligoester Derived from Benzoxazine Dimers
Authors: Laobuthee Apirat , Chirachanchai Suwabun
Published: September 2002

A series of benzoxazine dimer based difunctional 30-membered macrocyclic and linear oligomer esters are selectively obtained in simple and mild condition. The unique intramolecular hydrogen bond of the dimer is a key factor to proceed the “self-selective reaction” in esterification between terephthaloyl chloride and benzoxazine dimers. This is a so-called “simple, effective, and selective synthesis route” since we can obtain a well-defined structure product in a high yield without using expensive catalysts for multistep reactions in specific conditions.
Synthesis and Characterisation of Mu-26 a Fluorinated All-Silica Zeolite with the STF Framework Topology: Evidence for a Triclinic Symmetry
Authors: Harbuzaru Bogdan , Roux Mélanie , Paillaud Jean-Louis , Porcher Florence , Marichal Claire , Chézeau Jean-Michel , Patarin Joël
Published: September 2002

X-ray powder diffraction pattern analysis and multinuclear solid state NMR studies performed on the as-synthesised Mu-26 solid, a fluorinated all-silica zeolite with the STF framework topology, have revealed unambiguously a triclinic unit cell and space group P1 for this material.
Highly Sensitive Determination of Acetylcholinesterase Activity Based on the Chemisorption/Reductive Desorption-Process of Thiol Compound on a Silver Electrode
Authors: Matsuura Hiroaki , Sato Yukari , Sawaguchi Takahiro , Mizutani Fumio
Published: September 2002

The chemisorption/reductive desorption-process of a thiol compound on a silver electrode was applied to the highly sensitive determination of a thiol-producing enzyme, acetylcholinesterase.
Synthesis of Siliceous Hollow Spheres with Ultra Large Mesopore Wall Structures by Reverse Emulsion Templating
Authors: Yu Chengzhong , Tian Bozhi , Fan Jie , Stucky Galen D , Zhao Dongyuan
Published: September 2002

By using reverse emulsion templating, siliceous hollow spheres with ultra large mesopore wall structures (∼50 nm in pore diameter, ∼200 nm in wall thickness) have been synthesized with a high surface area (674 m2/g) and pore volume (1.25 cm3/g).
Crystal Growth of Magnesium Zinc Borophosphate
Authors: Wang Guofu , Wu Yicheng , Liu Hongjun , Fu Peizhen , Pan Shilie , Zhang Guochun , Chen Chuangtian
Published: September 2002

Single crystal of solid solution magnesium zinc borophosphate was first grown by the Czochralski method. The crystal obtained shows thick plate-like morphology with sizes up to 20 mm×15 mm×7 mm. The crystal is transparent in the wavelength range of 200–2500 nm, with the UV absorption edge at about 200 nm. The powder second harmonic generation effect of the crystal is similar to that of KH2PO4.
1H NMR Analysis and Crystal Structures of 1,1′,3,3′-Tetramethyl-2,2′-bi-1H-imidazolium Bis(tetraphenylborate): Ion-Associative Interactions Containing Ketone, Aldehyde, and Nitrile
Authors: Ono Katsuhiko , Saito Katsuhiro , Uchiumi Hideki , Tomura Masaaki
Published: September 2002

The title dication interacts with ion-associable tetraphenylborate (BPh4) anions in an acetone or acetonitrile solution, and crystals of the salt included some kinds of ketone, aldehyde, and nitrile as guest molecules to afford unique molecular aggregations.
Lewis Acid Catalyzed Synthesis of 4-Aminopyrrolo[1,2-a]quinolin-5-ol Derivatives from 2-(1-Pyrrolyl)benzaldehyde and Isocyanides
Authors: Kobayashi Kazuhiro , Nakahashi Ryoji , Takanohashi Atsushi , Kitamura Taichi , Morikawa Osamu , Konishi Hisatoshi
Published: September 2002

Reaction of 2-(1-pyrrolyl)benzaldehyde with isocyanides in the presence of a catalytic amount of boron trifluoride diethyl etherate was followed by treatment with acetic anhydride in pyridine to give the corresponding O-acetyl derivatives of 4-alkyl(or aryl)aminopyrrolo[1,2-a]quinolin-5-ols in moderate yields.
β-Selective Glycosylation of 5-Thioglucopyranose Derivatives; Syntheses of β-(1→6) Linked 5′-Thioglucopyranosyl Disaccharides
Authors: Ohara Keiichiro , Matsuda Hiroko , Hashimoto Masaru , Miyairi Kazuo , Okuno Toshikatsu
Published: September 2002

β-Stereoselctive and effective glycosylation with 5-thioglucopyranose was achieved by performing the reaction with pivaloyl- or benzoyl-protected glucopyranosyl trichloroacetimidates and BF3OEt2, a glycosyl activator, when C6-OH glucopyranosyl or galactopyranosyl derivatives were employed as acceptors.
Syntheses of New Pyrimidine Based Compounds and Their Peculiar Emission Behaviors
Authors: Takagi Shigeru , Sahashi Tomohiro , Sako Katsuya , Mizuno Katsuya , Kurihara Masato , Nishihara Hiroshi
Published: September 2002

A series of pyrimidine-based compounds have been synthesized. Methyl (1) and amino (2) substituted compounds emitted fluorescence in solution. From the solvent effect on their emission spectra, the mechanism of emission was different in 1 and 2, and the emission of 2 contains the internal charge transfer process.
Preparation and Photocatalysis Properties of Silica-coated Zinc Oxide Composite Powder
Authors: Wang Hongzhi , Chen Yunfa , Nakamura Hiroyuki , Yao Ken , Nishimura Satoshi , Abe Eiichi
Published: September 2002

A modified Stober method has been used to provide a silica coating on ZnO particles while maintaining good dispersion of the ZnO particles. The results showed that the utilization of a previous hydrolysis process could reduce aggregation between core particles in the starting solution and that few little agglomerates appeared during the coating process. Silica coated powders prepared in this study reduced the photocatalysis reaction of ZnO particles.
Surface modification of Mesoporous Silica to Control the States of Tris(2,2′-bipyridine)ruthenium(II) Cations
Authors: Ogawa Makoto , Kuroda Kazuyuki , Nakamura Tomoyuki
Published: September 2002

The adsorption and immobilization of tris(2,2′-bipyridine)ruthenium(II) ([Ru(bpy)3]2+) in mesoporous silicas (C18-FSM) modified by the introduction of aluminum as well as sulfonic acid groups were investigated. The complex was immobilized by the cooperative effects of electrostatic interactions between [Ru(bpy)3]2+ cation and sulfonic acid group and the interactions with the phenyl rings of the mesopore surface and the bipyridine rings.
Novel Diruthenium Disulfinate Complex Formed by Oxygen Capture on Deprotonated Form of Ruthenium-Aqua-Dithiolene: Four Oxygens from O2 and Four Oxygens from H2O
Authors: Sugimoto Hideki , Wada Hiroaki , Wakatsuki Yasuo , Wada Tohru , Tanaka Koji
Published: September 2002

Oxygenation of sulfur in ruthenium-dithiolene complex took place in CH3OH/H2O in the air and the novel diruthenium disulfinate complex formed. The similar oxygenation by use of 18O2 and H2  18O revealed that four of the eight oxygen of disulfinate complex resulted from O2 and the remaining four came from H2O.
New Autocatalytic Mechanism for Metal Electrodeposition Leading to Oscillations and Fern-Leaf-Shaped Deposits
Authors: Nakanishi Shuji , Fukami Kazuhiro , Sakai Sho-ichiro , Nakato Yoshihiro
Published: September 2002

Zinc electrodeposition on a zinc electrode with a rough surface showed a potential oscillation, accompanied by fern-leaf-shaped deposits, contrary to the case of a zinc electrode with a smooth surface. A new autocatalytic mechanism based on a rough electrode surface is proposed to explain the phenomena systematically.
Water-Soluble Single-Walled Carbon Nanotubes via Noncovalent Sidewall-Functionalization with a Pyrene-Carrying Ammonium Ion
Authors: Nakashima Naotoshi , Tomonari Yasuhiko , Murakami Hiroto
Published: September 2002

In this communication, we describe the finding that sonication of solid single-walled carbon nanotubes (p-SWNT) in an aqueous solution of a pyrene-carrying ammonium ion 1 gave a transparent dispersion/solution of the nanotubes, which was characterized by transmission electron microscopy, UV-vis absorption, fluorescence and 1H NMR spectroscopies. We showed evidence for the interaction of the nanotube sidewall and the pyrene moiety in the aqueous dispersion/solution.
An Unusual, DDQ-Promoted Oxidative Rearrangement of 9,9-Disubstituted 1,4,5,8-Tetrahydro-4a,8a-methanonaphthalenes
Authors: Barasz Jonah A , Ghaffari Ali H , Otte Douglas A , Thamattoor Dasan M
Published: September 2002

The action of excess DDQ on 1,4,5,8-tetrahydro-4a,8a-methanonaphthalenes bearing a methyl group and one other substituent (cyclopropyl, methyl, phenyl) at the 9 position resulted in a peculiar oxidative rearrangement to 1-vinylnaphthalene derivatives. Two closely related mechanisms, both of which involve a 1,5-sigmatropic shift of the one-carbon bridge (Berson-Willcott rearrangement), are considered for this novel process.
Oscillation-Induced Layer-by-Layer Electrodeposition Producing Alternate Metal and Metal-Alloy Multilayers on a Nanometer Scale
Authors: Sakai Sho-ichiro , Nakanishi Shuji , Fukami Kazuhiro , Nakato Yoshihiro
Published: September 2002

A current oscillation appears in electrodeposition of Cu and Sn in an acidic solution containing a cationic surfactant. The oscillation leads to layer-by-layer deposition producing alternate metal and metal-alloy multilayers on a nanometer scale.
Preparation of Nano-Crystalline LiFe0.97Co0.03O1.95Cl0.05 by Solid-State Method
Authors: Lee Yun Sung , Sun Yang Kook , Kobayakawa Koichi , Sato Yuichi
Published: September 2002

LiFe0.97Co0.03O1.95Cl0.05 has been synthesized at 150 °C using the solid-state method. A Li/LiFeO2 cell as reported previously exhibited a large capacity decline until 15 cycles. To obtain a good cycleability of LiFeO2, Co and Cl ions substituted some Fe and O atoms of the LiFeO2 structure. LiFe0.97Co0.03O1.95Cl0.05 showed small lattice parameters compared with those of LiFeO2. This material showed a good cycleability with fairly a high discharge capacity of over 134 mAh/g at high current density.
Preparation and Spectroscopic Characterisation of Some 5-Methylmercapto- and 5-Dimethylamino-substituted Tris-(2-thienyl)methinium Perchlorates
Authors: Noack Antje , Hartmann Horst
Published: September 2002

A series of deeply coloured 5-methylmercapto and 5-dimethylamino substituted tris(2-thienyl)methinium perchlorates has been prepared by the reaction of 2-methylmercapto-5-lithiothiophene with methyl 2-dimetylamino-5-thiophenecarboxylate, bis(2-dimethylamino)ketone, or diethyl carbonate, respectively. The products have been characterized spectroscopically.
Electrocatalytic Reduction of Sulfur Dioxide by Iron Phthalocyanine Monolayer in Acidic Conditions
Authors: Yu Cheol Su , Choi Hyukjae , Kim Sunghyun
Published: September 2002

The iron phthalocyanine (FePc) monolayer adsorbed on a graphite surface showed a remarkable activity for the SO2 reduction in aqueous conditions. The highest activity was observed at strongly acidic solutions and decreased with a pH increase due to the H+ limitation of reduction. Only SO2 and HSO3- are reducible forms. The reduction mechanisms at strongly and moderately acidic conditions were suggested. The SO2 reduction current was independent of the surface coverage and the ppb level detection was possible with amperometry.
Synthesis and Application of [Mo8O16Cl2(OCH3)6(HOCH3)4] to Magnetoresistant Oxides
Authors: Chae Hee K , Kim Jung Young , Hwang Chulsoon , Lee Bo Wha
Published: September 2002

An octanuclear oxomolybdenum(V) cluster compound [Mo8O16Cl2(OCH3)6(HOCH3)4] was prepared from the reaction of oxomolybdenum(V) chloride and the potassium salt of triethanolamine in methanol. The complex was used to prepare Sr2FeMoO6, which shows a very high negative magnetoresistance of 33% with a magnetic field of 0.8 T at 12 K.
Amperometric Detection of Endocrine Disruptive Alkylphenolic Compounds Based upon the Redox Recycling on an Alkyl Chain-Coated Electrode
Authors: Uno Bunji , Kato Yoshiaki
Published: September 2002

A sensitive detection method based upon continuous regeneration of the oxidized form of the ferrocenoyl phenols by reaction with ferrocyanide is proposed for HPLC analyses of endocrine disruptive alkylphenolic compounds. The detection limits were 5.4×10-11 and 9.4×10-11 mol dm-3 of 4-tert-butylphenol (1) and 4-nonylphenol (7), respectively.
Thiolato-Bridged Hexanuclear CuICuII Mixed-Valence Complex
Authors: Kotera Takanori , Mikuriya Masahiro
Published: September 2002

Thiolato-bridged hexanuclear mixed-valence complex, [CuI3CuII3(apampt)3Cl6] (Hapampt=1-[(3-aminopropyl)amino]-2-methylpropane-2-thiol), has been synthesized and characterized by X-ray crystallography. Spectroscopic data as well as structural features support a localized mixed-valence state. Magnetic susceptibility data show that a strong antiferromagnetic interaction is operating between the CuII ions.
Sorption of Eu(III) on Kaolinite in the Presence of Humic Acid: Effects of Ionic Strength
Authors: Sakuragi Tomofumi , Sato Seichi , Kozaki Tamotsu
Published: September 2002

The effects of ionic strength on the sorption of Eu(III) on kaolinite in the presence of humic acid (HA) were examined using a batch method. Eu(III) sorption increased with increased ionic strengths in the pH range of 6 to 10, but was insensitive to ionic strength in the pH range below 5. Adsorption of HA onto kaolinite also increased in the pH range of 6 to 10, indicating that the increase in adsorption of Eu(III)-humate complexes is a predominant process for the increase in Eu(III) sorption.
Construction of a One-Dimensional Chain Composed of Mn6 Clusters and 4,4′-Bipyridine Linkers: The First Step for Creation of “Nano-Dots-Wires”
Authors: Nakata Kazuya , Miyasaka Hitoshi , Sugimoto Kunihisa , Ishii Tomohiko , Sugiura Ken-ichi , Yamashita Masahiro
Published: September 2002

Treatment of a mixed-valence Mn6 cluster, [Mn6O2(t-BuCO2)10(t-BuCO2H)4] (1), with 4,4′-bipyridine (bpy) in dichloromethane/1,2-dichloroethane solution gave a one-dimensional polymeric chain compound, [Mn6O2(t-BuCO2)10(t-BuCO2H)2(bpy)] (2), in which the parent cluster core was maintained as a building block.
Benzyl 4,6-Dimethoxy-1,3,5-triazinyl Carbonate as N-Protecting Reagent
Authors: Hioki Kazuhito , Fujiwara Miho , Tani Shohei , Kunishima Munetaka
Published: September 2002

A new active carbonate ester, benzyl 4,6-dimethoxy-1,3,5-triazinyl carbonate (Z-DMT), was prepared, and found to be a useful reagent for the introduction of benzyloxycarbonyl group into amines. Since Z-DMT is neither unstable nor irritating, it is practically useful.
Photocatalytic Degradation of 4-n-Nonylphenol under Irradiation from Solar Simulator: Comparison between BiVO4 and TiO2 Photocatalysts
Authors: Kohtani Shigeru , Makino Shigeki , Kudo Akihiko , Tokumura Kunihiro , Ishigaki Yasuhito , Matsunaga Tsukasa , Nikaido Osamu , Hayakawa Kazuichi , Nakagaki Ryoichi
Published: September 2002

A toxic endocrine disruptor, 4-n-nonylphenol, was degraded using a well-known TiO2 and a visible-light-driven BiVO4 photocatalyst under irradiation from a solar simulator. The degradation rates for both BiVO4 and TiO2 are comparable in air-saturated solution though surface area of BiVO4 is much smaller than that of TiO2. This fact indicates that BiVO4 has a great ability to degrade alkylphenols in wastewater under solar light.
Spatially Selective Formation of Microcrystalline Germanium by Laser-Induced Pyrolysis of Organogermanium Nanocluster Film
Authors: Watanabe Akira , Unno Masashi , Hojo Fusao , Miwa Takao
Published: September 2002

A new method to prepare microcrystalline Ge film by laser-induced pyrolysis of spin-coated organogermanium nanocluster film was developed, which is applicable to the spatially selective formation of microcrystalline Ge micropatterns.
Observation of a New Co-F Compound Detected by Very-High-Energy X-ray Diffraction During Thermal Decomposition of CoF3
Authors: Rau J V , Albertini V Rossi , Chilingarov N S , Colonna S , Michiel M di
Published: September 2002

In situ diffraction studies of structural transformations occurring during thermal decomposition of a cobalt fluoride-CoF3-were performed using a very-high-energy (89 keV) synchrotron radiation. The real-time evolution of the crystal lattice was followed as a function of temperature. A new compound appearing as intermediate in the course of the decomposition from CoF3 to CoF2 was discovered.
Spin-Lattice Relaxation Times of Aliphatic Spin Probes in a Unique Triglyceride Membrane
Authors: Nakagawa Kouichi
Published: September 2002

Spin-lattice relaxation times of the spin probe moiety in the HCO membrane were obtained for the first time. The Tle becomes shorter with the probe site going toward the inner chain as well as with a rise in temperature. The spin dynamics were consistent with EPR lineshape observed.
Structural Study on Amorphous AlPO4 by 17O MQMAS and Mutual (31P↔17O) CP/MAS NMR
Authors: Kanehashi Koji , Saito Koji
Published: September 2002

The 17O multiple quantum magic angle spinning (MQMAS) and the mutual (31P↔17O) CP/MAS (MCP) NMR was applied to clarify the detailed chemical structure in amorphous AlPO4. An application of the mutual CP/MAS method being capable of mapping out the connectivity with the 17O MQMAS for characterization of oxygen sites provided precious structural information in amorphous AlPO4.
Synthesis and Magnetic Properties of Mesoporous Vanadium Oxide Sulphate
Authors: Kohiki Shigemi , Shimooka Hirokazu , Takada Syozo , Shimizu Akihiko , Hirakawa Tomohiro , Takahashi Seiji , Deguchi Hiroyuki , Oku Masaoki
Published: September 2002

Preparation and magnetic properties of mesostructured VOSO4 based materials, which were synthesized using liquid-crystal templating technique, have been investigated. Low temperature magnetic properties of the samples exhibited Langevin paramagnetism with an effective magnetic moment μeff=1.4 μB and a paramagnetic Curie point θ=0 K without any magnetic transition, which were considerably different from magnetic properties of α- or β-VOSO4 crystals.
Catalytic Application of Zeolites in the Methanol Conversion to Hydrocarbons
Authors: Aramendía María A , Borau Victoriano , Jiménez César , Marinas José M , Roldán Rafael , Romero Francisco J , Urbano Francisco J
Published: September 2002

The product compositions in the methanol conversion to hydrocarbons over several zeolites are compared and discussed. Although a great number of different compounds are present, small alkanes, such as isobutane and isopentane, and polymethylbenzenes are the major compounds over zeolites beta, mordenite and faujasite. However, zeolite ferrierite is quite selective for alkenes. Also, zeolite beta can transform acetone into hydrocarbons.
Engineering a Hydrophilic Heme Catalytic Pocket into Microsomal Cytochrome b5: Construction of Novel Metalloproteins with High Peroxidase-like Activity
Authors: Wang Wen-Hu , Wang Yun-Hua , Lu Jun-Xia , Wang Jian-Hua , Xie Yi , Huang Zhong-Xian
Published: September 2002

We have engineered novel hemoproteins with high catalytic activity by introducing several hydrophilic residues in the axial ligand of microsomal cytochrome b5, an electron transfer protein. Some (H39S and H39Q) of these mutants possess quite high peroxidase-like reactivity as designed. One (H39C) of them shows very low catalytic reactivity, and this may be attributed to the unique hexa-coordination (His-Fe3+-Cys) for this mutant.
Control of Pore Structure of Mesoporous Smectite-type Materials Containing Cobalt Cations in Octahedral Sheets
Authors: Shirai Masayuki , Aoki Kuriko , Torii Kazuo , Arai Masahiko
Published: September 2002

Mesoporous materials with a smectite-type structure containing cobalt divalent cations in octahedral sheets (MST(Co)) are synthesized by the calcination of the mixture of dimethydistearyl ammonium chloride and silicate fragments synthesized with a hydrothermal method, their pore properties of the MST(Co) samples being able to control with hydrothermal conditions.
Enantioselective Binding of Amino Acid Derivatives onto Imprinted TiO2 Ultrathin Films
Authors: Lee Seung-Woo , Ichinose Izumi , Kunitake Toyoki
Published: September 2002

Ultrathin films of titanium oxide gel that are imprinted with carbobenzyloxy-L (and D)-amino acids (Cbz-Ala, Cbz-Leu, and Cbz-Phe) were prepared on gold-coated QCM electrodes. The imprinted films showed much better binding for template stereoisomers than the corresponding enantiomers. The chiral separation factor increased with increasing sizes of the amino acid side chain.
Infrared Electroabsorption Spectroscopic Study of Association Structures of 5CB in the Solution, Isotropic Liquid and Nematic Liquid Crystal States
Authors: Min Young-Kun , Hiramatsu Hirotsugu , Hamaguchi Hiro-o
Published: September 2002

The association structures of 4-n-pentyl-4’-cyanobiphenyl (5CB) in the solution, isotropic liquid, and nematic liquid crystal states have been studied by infrared electroabsorption spectroscopy. In a 0.5 mol dm-3 carbon tetrachloride solution, the determined value of dipole moment of 5CB (4.9D) agrees excellently with a literature value (4.85D) for monomer, indicating that the 5CB molecule exist as a monomer. Monomeric response of the 5CB molecule to the external field has also been found for the isotropic liquid state. For the nematic phase, marked deviation from the monomeric response has been found, showing the domain formation of the 5CB molecules. The size dependence of the domain response to the applied electric field has also been elucidated.
Synthesis of a New Layered Manganese Oxide Nanocomposite through a Delamination/Reassembling Process
Authors: Liu Zong-huai , Yang Xiaojing , Makita Yoji , Ooi Kenta
Published: September 2002

A new layered nanocomposite with propylamine-containing silica between the manganese oxide sheets was synthesized for the first time through a delamination/reassembling process. It had a higher ordered stacked structure than the silica-pillared manganese oxide obtained by the conventional intercalation reaction.
A Chemical Modification of a Mn12 Single-Molecule Magnet by Replacing Carboxylate Anions with Diphenylphosphate Anions
Authors: Kuroda-Sowa Takayoshi , Fukuda Satoshi , Miyoshi Shinsuke , Maekawa Masahiko , Munakata Megumu , Miyasaka Hitoshi , Yamashita Masahiro
Published: September 2002

Diphenylphosphate anions can replace with benzoate anions of [Mn12O12(O2CPh)16(H2O)4] to afford a novel Mn12 single-molecule magnet (SMM) with mixed bridging ligands.
Characterization of Photochemical Reaction in Photosensitive Printing Plates by 13C NMR in the Bulk State and ATR FTIR Spectroscopy
Authors: Sakaguchi Yoshimitsu , Yamada Takatoshi , Okazaki Yasuyuki , Imahashi Satoshi , Kawahara Keizo
Published: September 2002

Photochemical reaction in a flexographic printing plate was characterized. The distribution of photochemical reaction in the direction of thickness was successfully understood by the combination of overall reactivity obtained by 13C NMR measurement and reactivity near the surface obtained by ATR FTIR spectroscopy.
Mg2+-Selective Fluorescence Enhancement of Benzo-15-crown-5 Derivative Bearing Vinylanthracene Fluorophore
Authors: Shin Eun Ju
Published: September 2002

A fluoroionophore, 1-(anthryl)-2-(benzo-15-crown-5)ethene, was synthesized. This crown ether derivative showed remarkably high cation-induced fluorescence enhancement for magnesium ion.
Three-Component Condensation of Meldrum’s Acid with Aldehyde and Thiol Catalyzed by Polymer-Supported Reagent
Authors: Yadav J S , Syamala M
Published: September 2002

Piperazinomethyl polystyrene serves as an efficient and reusable catalyst in acetic acid (piperazinomethyl polystyrene acetate) for the three component condensation reaction of Meldrum’s acid, aldehyde and a thiol which affords the corresponding spirocyclic derivatives in good yields and purity.
Isolation of Single-wall Carbon Nanotube Bundles Through Gelatin Wrapping and Unwrapping Processes
Authors: Takahashi Teruo , Tsunoda Katsunori , Yajima Hirofumi , Ishii Tadahiro
Published: September 2002

The isolation of single-wall carbon nanotube (SWNT) bundles and purification of these SWNTs were investigated by dispersing the SWNTs in an aqueous gelatin solution. TEM images of the SWNTs dispersed in the gelatin solution showed that the interaction between the gelatin molecules and the SWNTs produces a transformation of the SWNT bundles into thin bundles. Raman spectra measurements revealed that dispersing the SWNTs in the gelatin solution is a good purification procedure for the SWNTs.
Novel Linear and Hyperbranched Aromatic Polyamide with Phenylazometine Units for Chemical Recycling
Authors: Yamamoto Kimihisa , Higuchi Masayoshi , Kanazawa Hirohiko
Published: September 2002

Novel linear and hyper-branched aromatic polyamides having phenylazomethine units were synthesized by the polycondensation of di- or triamine monomers containing azomethine bonds with dicarboxylic acids. The polymers obtained have a high solubility in DMF unlike polyphenylazomethines, a high thermal stability (Td10%>500 °C), and is susceptible to a simple and selective acid catalyzed decomposition for chemical recycling.
Enhanced Third-order Optical Nonlinearities of Au-CdS Core-Shell Nanoparticles Embedded in BaTiO3 Thin Films
Authors: Yang Yong , Shi Jianlin , Chen Hangrong , Dai Shugang , Liu Ye
Published: September 2002

Au-CdS core-shell nanoparticles (CSNs) are synthesized by a simple method based on directly self-assembling process and successfully integrated into BaTiO3 films. The significant enhancement of third-order nonlinear optical nonlinearities of Au-CdS CSNs were reported for the first time.
STM Observation of Single Molecular Chains of π-Conjugated Polymers
Authors: Kasai Hitoshi , Tanaka Hiroyuki , Okada Shuji , Oikawa Hidetoshi , Kawai Tomoji , Nakanishi Hachiro
Published: September 2002

Single molecular chains of π-conjugated polymers such as polythiophene and polydiacetylene were clearly observed by STM, and their molecular structures and/or conformation were discussed in relation to bonding characteristics. It should be noted that even molecular weight could be determined using well-resolved STM images.
Stereoselective Crossed Aldol Reaction via Boron Enolate Generated from α-Iodoketones and 9-BBN-H
Authors: Mukaiyama Teruaki , Imachi Shouhei , Yamane Keiko , Mizuta Masahiro
Published: September 2002

Boron enolates were in situ generated smoothly by treating α-iodo ketones with 9-BBN-H, and aldols were produced in highly diastereoselective manner by successive reaction with various aldehydes at low temperature.
Catalytic Decomposition of Phenyl Acetate by Halide Clusters of Nb, Mo, Ta, and W Possessing Octahedral Metal Core
Authors: Chihara Teiji , Kamiguchi Satoshi
Published: September 2002

The application of hexanuclear halide clusters as catalysts was made. Molecular halide clusters of Nb, Mo, Ta, and W possessing an octahedral metal core were treated in a helium stream at 250 °C for 1 h before introduction of phenyl acetate. These clusters served as catalysts for decomposition of the ester to phenol and ketene. Raman and X-ray analyses showed that the development of the catalytic activity was attributable to the partial loss of the inner halogen ligands.
First-Principles Energy Band Calculation for SrAl2O4 with Monoclinic Structure
Authors: Matsushima Shigenori , Nakamura Hiroyuki , Arai Masao , Xu Chao-Nan
Published: September 2002

The electronic structure of strontium aluminate, SrAl2O4, is calculated by using the scalar-relativistic full potential linearized augmented plane wave (FLAPW) method. SrAl2O4 is predicted to be an indirect-gap material, since the valence band maximum locates near Z point and the conduction band minimum at Γ point. The valence band with the width ca. 5.3 eV is mainly constructed from O 2p orbitals, where Al 3s3p and Sr 5s5p slightly hybridize with O 2p, and the lower conduction band from Sr 5s orbitals.
Bone-Like Apatite Formation On Collagen Fibrils By Biomimetic Method
Authors: Girija E K , Yokogawa Y , Nagata F
Published: September 2002

Formation of collagen-apatite composite by biomimetic methods without any previous treatment of the collagen fibrils has been investigated. Reconstituted collagen fibrils obtained from Type I collagen solution were incubated in conventional and revised simulated body fluid (C and R-SBF) solutions to form calcium phosphate. Spherical deposits of B-type carbonate apatite started precipitating along the fibrils from day 1 of incubation in both C and R-SBF. But the large number of carbonate ions in R-SBF has changed the microstructure of the apatite precipitates. The calcium rich apatite deposits are more in R-SBF than in C-SBF. Percentage of Cl- ions in the precipitates of R-SBF were less than in C-SBF.
Low-Molecular-Weight Hydrogelators Based on L-Lysine with Various Pyridinium Cations
Authors: Suzuki Masahiro , Yumoto Mariko , Kimura Mutsumi , Shirai Hirofusa , Hanabusa Kenji
Published: September 2002

L-Lysine derivatives act as low-molecular-weight hydrogelators that can gel water below 1 wt%.
Assembling Behavior of BINAP Derivative
Authors: Wu Peng , Deng Guojun , Fan Qinghua , Zeng Qingdao , Wang Chen , Wan Lijun , Bai Chunli
Published: September 2002

Ordered assembly of dendritic BINAP ligand has been studied by using scanning tunneling microscopy (STM). It is proposed that the molecules are arranged in a dimeric manner in the assembly.
Copper-mediated Coupling Reaction of Kinetically Stabilized 1-Methyl-2-phosphaethenyllithiums Involving an Isomerization to a 3-Phospha-2-propenyllithium Derivative
Authors: Ito Shigekazu , Kimura Shigeo , Yoshifuji Masaaki
Published: September 2002

Copper-mediated coupling reaction of 1-methyl-2-(2,4,6-tri-t-butylphenyl)-2-phosphaethenyllithiums afforded 1,4-diphosphabuta-1,3-diene or 1,6-diphosphahexa-1,5-diene derivatives, depending upon non-coordinated or coordinated to W(CO)5, which facilitates an isomerization to a 3-phospha-2-propenyllithium.
Diastereoselective Synthesis of 4-Substituted L-Prolines by Intramolecular Radical Cyclization of N-Aryl sulphonyl-N-allyl 3-bromoalanines: Interesting Dependence of Selectivity on the Nature of Sulphonamido Groups
Authors: Basak Amit , Bag Subhendu Sekhar , Rudra Kakali Rani , Barman Jharna , Dutta Sumana
Published: September 2002

Enantiopure 4-substituted L-proline derivatives have been prepared via intramolecular radical cyclization of N-aryl sulphonyl-N-allyl-3-bromo-L-alanines in high yields. Surprisingly, the extent of selectivity was found to be primarily dependent on the nature of sulphonamido aryl group and could be as high as 33:1 using naphthyl sulphonamide.
Reduction of Oxygen at an Electrode Modified by Cobaltporphyrin Liquid Membrane
Authors: Shentu Baoqing , Oyaizu Kenichi , Nishide Hiroyuki
Published: September 2002

The picket-fence cobaltporphyrin (CoP) having rapid and reversible oxygen-binding properties was employed to accumulate oxygen from a bulk solution to a diffusion layer at an electrode surface. Modification of a carbon electrode with a thin CoP liquid membrane resulted in a significant increase in the reduction current of oxygen, which proved to be a new type of modified electrode to reduce the diffusion resistance of oxygen from the bulk solution onto the electrode surface.
Biomimetic Approach for Exact Control of TiO2 Periodic Microstructures
Authors: Yamabi Satoshi , Imai Hiroaki , Awazu Koichi
Published: September 2002

Periodic array of titanium dioxide (TiO2) microprojections was fabricated in aqueous solutions using poly(methylmethacrylate) (PMMA) films with ordered microcavities as a mold. The periodic microprojections consisting of crystalline TiO2 exquisitely transcribed the architecture of the mold without deformation or shrinkage. This biomimetic route including preferable nucleation on the specific organic surface and subsequent growth of the crystalline phase at a low temperature is applicable to construct three-dimensional periodic architectures for photonic structures of various metal oxides.
Hydrolytic Activity of A FeIIIZnII Complex toward Di(p-nitrophenyl) Phosphate: A Functional Model of Heterobimetallic Phosphodiestelase
Authors: Machinaga Hironobu , Matsufuji Kanako , Ohba Masaaki , Kodera Masahito , Okawa Hisashi
Published: September 2002

A FeIIIZnIII complex, [FeZn(L)(AcO)3]BPh4·H2O, of 2-{N-[2-(dimethylamino)ethyl]iminomethyl}-6-[N,N-di(2-pyridyl-methyl)aminomethyl]-4-methylphenolate (L-) hydrolyses tri(p-nitrophenyl) phosphate (TNP) into di(p-nitrophenyl) phosphate (DNP-) and DNP- into mono(p-nitrophenyl) phosphate (MNP2-) in aqueous DMF.
Oxidative Decarboxylation of 4-Arylmethylidene-5(4H)-oxazolones Using Cerium(IV) Ammonium Nitrate
Authors: Ram S Raja , Devi A Rama , Iyengar D S
Published: September 2002

Oxidative decarboxylation of azlactones by cerium(IV) ammonium nitrate yields 2-arylglyoxylamide in very good yields.
Synthesis and Reactions of Water-soluble Diorganoplatinum(II) Complexes
Authors: Komiya Sanshiro , Ikuine Miho , Komine Nobuyuki , Hirano Masafumi
Published: September 2002

Ligand displacement reactions of PtR2(cod) with water soluble tertiary phosphines such as 1,2-bis{di(hydroxymethyl)-phosphino}ethane (DHMPE) or tris(hydroxymethyl)phosphine (THMP) gave new water-soluble diorganoplatinum(II) complexes PtR2L2 [L2=(HOCH2)2PCH2CH2P(CH2OH)2: R=Me (1a); Et (1b); Ph (1c), L=P(CH2OH)3: R=Me (2a); Et (2b); Ph (2c)] at room temperature. They were considerably stable in water and the thermolyses of 1b and 2b at 80 °C liberate ethylene and ethane via β-hydrogen elimination and hydrolysis.