bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ion Concentration at the Membrane Surface Obtained from the Membrane Potential and Transition of Ion Cluster Structure in Perfluorocarboxylate Ion Exchange Membrane System
Authors: Nomura Kazuo , Koga Tsutomu 
Published: May 2005

Abstract
The fast step and the subsequent slow step have been observed in the time course of the membrane potential in response to pH jump in the perfluoro carboxylate ion-exchange membrane-aqueous NaCl system. Using the Donnan potential obtained by separation of the two steps, the ion concentration at the membrane surface has been estimated. A change in the ion-cluster structure in the membrane has caused the plot of the surface concentration vs. pH in the external solution to break.
First Total Synthesis of (+)-Chrysanthemol
Authors: Chen Yonggang , Xiong Zhaoming , Zhou Gang , Yang Jiong , Li Yulin 
Published: May 2005

Abstract
The first total synthesis of (+)-chrysanthemol (1) has been described starting from (+)-dihydrocarvone (4). The features of our synthesis are the high yield introduction of C3-C4 double bond into eudesmane skeleton and rearrangement of epoxide to allylic alcohol promoted by BF3·OEt2-Bu4NI reagent. In our synthesis, (+)-α-eudesmol (5) has been used as a key intermediate.
Enhancing the Selectivity of Molecularly Imprinted Polymers
Authors: McNiven Scott , Yokobayashi Yohei , Cheong Soo Hwan , Karube Isao 
Published: May 2005

Abstract
The selectivity of a molecularly inprinted polymer (MIP) was substantially enhanced by inactivating the non-specific binding sites distributed within the polymer. Treatment of the polymer with varying amounts of methyl iodide in the presence of the template molecule resulted in stronger binding of the template and more effective separation from similar steroids.
Self-Assembly of Alkyl Substituted Schiff Base and Its Cu(II) Complex Observed on Solution–Graphite Interface by Scanning Tunneling Microscopy
Authors: Qian Pu , Nanjo Hiroshi , Sanada Norio , Yokoyama Toshiro , Suzuki Toshishige M 
Published: May 2005

Abstract
Self-assembled monolayer of Schiff base ligand, N-octadecylsalicylaldimine (C18Sal) has been observed by scanning tunneling microscope on the solution–graphite interface and the molecular geometry has been assigned. The molecular pattern of the Schiff base immediately changed upon addition of Cu(II) associated with in situ complexation and formation of a new molecular framework.
Fluorescence Measurement of 3,5-Dimethoxyphenol Radical Cation Generated by Pulse Radiolysis in 1,2-Dichloroethane
Authors: Ichinose Nobuyuki , Tojo Sachiko , Majima Tetsuro 
Published: May 2005

Abstract
Radical cation of 3,5-dimethoxyphenol in the excited state generated in 1,2-dichloroethane solution by the tandem irradiation of 28-MeV electron and 532-nm laser pulses emitted fluorescence around 600–750 nm with a quantum yield of 2.0 × 10−3.
Novel Polydiacetylenes Containing Crown Ether Groups
Authors: Shimada Satoru , Masaki Atsushi , Hayamizu Kikuko , Matsuda Hiro , Okada Shuji , Nakanishi Hachiro 
Published: May 2005

Abstract
Polydiacetylenes containing crown ethers in the substituent were synthesized by the solid-state polymerization of the corresponding diacetylenes derived from 1,10-pentacosadiynoic acid in the manner of 1,4-addition.
Facile Formation and Dissociation Behaviour of C–C Bond Resulted from the Nucleophilic Attack of Carbanions on a Carbonyl Carbon in [Pt(hfac)2]
Authors: Okeya Seichi , Hashimoto Masato , Nakamura Fumiko , Kusuyama Yoshiaki , Kobayashi Mako , Arakawa Ryuichi 
Published: May 2005

Abstract
[Pt(hfac)2] (hfac: hexafluoroacetylacetonate) reacts with MeNH2 in CH2Cl2/MeOH to give an –NHMe adduct complex on one of the carbonyl carbons, (MeNH3)[Pt(hfac)(hfac–NHMe)] 1 which is a tetrahedral intermediate of a Schiff base complex, [Pt(CF3COCHC(Nme)CF3)2] 2. Complex 1 activates H2O, MeOH, MeNO2 or acetone in solution to form the corresponding conjugate base adducts. The C–C bond in –CH2NO2 adduct 6, easily cleaves and generates nitromethane in solution.
Bis(μ-oxo)(μ-hydroxo)triiron(III) and (μ-oxo)(μ-hydroxo)diiron(III) Core Complexes with Tripodal Ligands Having a Terminal Carboxylate Group
Authors: Furutachi Hideki , Ohyama Yuya , Tsuchiya Yasutaka , Hashimoto Koji , Fujinami Shuhei , Uehara Akira , Suzuki Masatatsu , Maeda Yonezo 
Published: May 2005

Abstract
The tripodal ligands (6Me2-BPG and BPG) containing the carboxylate donor afford two types of Fe2(O)(OH) and Fe3(O)2(OH) core complexes, depending upon the methyl-substituent effect on the 6-position of the pyridyl ring.
Use of 2-Cyano-1-t-butylethyl or 2-Cyano-1-(1,1-diethyl-3-butenyl)ethyl as a Phosphorus Protecting Group in Oligonucleotide Synthesis via in situ Phosphoramidite Methods
Authors: Kitamura Akinori , Horie Yoji , Yoshida Tadao 
Published: May 2005

Abstract
2-Cyano-1-t-butylethyl or 2-cyano-1-(1,1-diethyl-3-butenyl)ethyl 3′-O-phosphorimidazolidite of 5′-O-protected nucleoside was prepared in situ by the use of 2-cyano-1-t-butylethyl or 2-cyano-1-(1,1-diethyl-3-butenyl)ethyl phosphorobisimidazolidite as a new phosphitylating reagent. The phosphorimidazolidites were found to be key intermediates for preparing 5′-O-protected nucleoside 3′-O-monoalkylphosphoramidites in situ useful in the solid-phase oligonucleotide synthesis, and for synthesizing conveniently 3′-OH free dinucleoside phosphates and phosphorothioates in solution.
A Mixed-Valence Mn(II,III) Complex with a 2D Structure: Crystal Structure and Magnetic Property of K[Mn2(µ-CrO4)2(µ-OH)2]
Authors: Oshio Hiroki , Kikuchi Kazuhiro , Ito Tasuku 
Published: May 2005

Abstract
Reaction of MnSO4·4H2O with K2CrO4 in water yielded highly crystalline black solids, which was chracterized to a 2D mixed valent Mn(II,III) complex, potassium di-μ-chromato-di-μ-hydroxo-dimanganate (1-) K[Mn2(µ-CrO4)2(µ-OH)2] (1).
A Novel Cis–Trans Photoisomerization of Vinylidenecyclopropanes via Excited Singlet and Triplet States
Authors: Mizuno Kazuhiko , Sugita Hikaru , Hirai Takayoshi , Maeda Hajime 
Published: May 2005

Abstract
Photoisomerization of cis- and trans-1-diarylvinylidene-2,3-dimethylcyclopropanes is described. The formation of different photostationary state mixtures of cis and trans isomers generated by direct and triplet-sensitized photoreactions clearly shows that the photoisomerization proceeds via their excited singlet and triplet states, respectively.
Low-Temperature Magnets M[N(CN)2]2(pyrimidine) (M = Fe and Co) with a 3-D Network
Authors: Kusaka Takaharu , Ishida Takayuki , Hashizume Daisuke , Iwasaki Fujiko , Nogami Takashi 
Published: May 2005

Abstract
X-Ray crystal structure analyses reveal that the title complexes have a 3-D network, in which N(CN)2− and pyrimidine contribute µ-1,5-bridged 2-D and µ-1,3-bridged 1-D structures, respectively. Magnetic measurements indicate that the Fe and Co complexes have spontaneous magnetizations below the transition temperatures of 3.2 and 1.8 K, respectively.
Sugar-Integrated “Supergelators” Which Can Form Organogels with 0.03–0.05% [g mL−1]
Authors: Luboradzki Roman , Gronwald Oliver , Ikeda Atsushi , Shinkai Seiji 
Published: May 2005

Abstract
It was found that methyl-4,6-O-p-nitrobenzylidene-α-d-galactopyranoside (1) and methyl-4,6-O-benzylidene-α-d-mannopyranoside (2), which are scarcely soluble in apolar solvents, act as “supergelators” when they are enforcedly dissolved above their bp’s in a sealed tube. The minimum gelator concentrations (Cmin) were 0.03–0.07% [g mL−1] which are one of the lowest concentrations achieved so far. The coupled study of TEM observation with partial solvent exchange established that the organogel stability is related to the superstructure in the fibril network constructed in specific solvents.
Characterization of Fe-Oxide Species Prepared onto ZSM-5 Zeolites and Their Role in the Photocatalytic Decomposition of N2O into N2 and O2
Authors: Higashimoto Shinya , Nishimoto Kazuhiko , Ono Takehiko , Anpo Masakazu 
Published: May 2005

Abstract
Investigations on the effect of the local structures on Fe-ZSM-5 zeolites by means of ESR, UV–Vis absorption and XRD measurements have shown that Fe-ZSM-5 with low Si/Al ratios includes highly dispersed Fe-oxides with tetrahedral and distorted tetrahedral coordinations, while the latter species could not be observed in Fe-ZSM-5 with high Si/Al ratios. Moreover, the photocatalytic decomposition of N2O into N2 and O2 was found to proceed on Fe-ZSM-5 having low Si/Al ratios with a good linearity against the UV-irradiation time and a good stoichiometry. It was also observed that the photocatalytic efficiency decreased when the Si/Al ratio was increased. These results clearly suggest that a highly dispersed distorted tetrahedrally coordinated Fe-oxide species plays a significant role in the photocatalytic decomposition of N2O into N2 and O2.
Ammonia Production Characteristics of Ru/Al2O3 Catalysts Using Hydrogen Permeable Membrane
Authors: Itoh Masahiro , Machida Ken-ich , Adachi Gin-ya 
Published: May 2005

Abstract
Ammonia production characteristics were performed on Ru–Al2O3 catalyst loaded on a Ag–Pd hydrogen permeable membrane in the temperature range from room temperature to 523 K under atmospheric pressure, by which the activation energy observed (33.1 kJ mol−1) was lower than the sole Ru–Al2O3 catalyst (66.8 kJ mol−1). Ammonia was formed over the membrane reactor even at room temperature due to the high reactivity of atomic hydrogen supplied from the membrane.
Surface Organometallic Chemistry of Tin: Grafting Reaction of Sn(CH3)4 in HY Zeolite Supercage
Authors: Wang Xuxu , Zhao Huixia , Lefebvre Frédéric , Basset Jean-Marie 
Published: May 2005

Abstract
Tetramethyltin reacts rapidly, even at low temperature, with the hydroxy groups in the supercages of HY zeolite, resulting in the formation of well-defined –Sn(CH3)3 fragments in the supercages. This reaction is very selective as there is no reaction with the hydroxy groups in the sodalite cages and prisms.
Low Molecular Weight Gelator Containing β-Diketonato Ligands: Stabilization of Gels by Metal Coordination
Authors: Hanabusa Kenji , Maesaka Yukinobu , Suzuki Masahiro , Kimura Mutsumi , Shirai Hirofusa 
Published: May 2005

Abstract
A low molecular weight gelator containing β-diketonato ligands was prepared from a derivative based on trans-(1R,2R)-diaminocyclohexane. Gels were converted to mechanically-robust and thermally-stable gels by complexation between β-diketonato ligands and divalent metal ions.
Novel Gelators of Bile Acid–Alkylamine Salt Prepared through a Combinatorial Library Approach
Authors: Nakano Kazunori , Hishikawa Yukio , Sada Kazuki , Miyata Mikiji , Hanabusa Kenji 
Published: May 2005

Abstract
A combinatorial library approach enables us to find new low molecular-weight organogelators composed of a bile acid–alkylamine salt; the gel phenomena are investigated by FT-IR spectroscopy, SEM, and X-ray crystallography.
J-aggregate Formation in Single-Layer Amphiphilic Spiropyran Langmuir–Blodgett Films
Authors: Tachibana Hiroaki , Yamanaka Yasushi , Sakai Hideki , Abe Masahiko , Matsumoto Mutsuyoshi 
Published: May 2005

Abstract
J-aggregate formation was observed in single-layer Langmuir–Blodgett films of an amphiphilic spiropyran when they were irradiated with UV light at room temperature. We have revealed that tree-like structures with many branches are formed, accompanying the J-aggregate formation, which consist of a number of crystalline J-aggregates.
Highly Soluble Fluorenyl-Substituted Poly(1,4-phenylenevinylene) for Bright and Efficient Blue–Green Light-Emitting Diode
Authors: Lee Sang Ho , Jang Bo-Bin , Tsutsui Tetsuo 
Published: May 2005

Abstract
Poly[2-(9′,9′-bishexylfluorenyl)-1,4-phenylenevinylene] (BHF-PPV), which contains 9,9-bishexylfluorene as a pendant group, was synthesized by the modified Gilch polymerization of the corresponding bischloromethyl-substituted benzene monomer. Light emitting device fabricated with BHF-PPV showed high electroluminescence efficiency with low turn-on voltage.
Synthesis of Amorphous Diarylethenes Having Diphenylethenyl Substituents
Authors: Kim Myeong-Suk , Kawai Tsuyoshi , Irie Masahiro 
Published: May 2005

Abstract
1,2-Bis(2-methyl-1-benzothiophen-3-yl)perfluorocyclopentene derivatives having diphenylethenyl substituents at 6- and 6′-positions of the benzothiophene rings were synthesized. The mono and disubstituted derivatives formed an amorphous state and the glass transition temperatures were observed at 67 °C and 92 °C, respectively. Reversible photocyclization reactions were observed in the amorphous state.
A Simple Synthesis and the Crystal Structure of a Novel Tetranuclear Diorganotin Compound
Authors: Dey Dilip Kumar , Saha Manas Kumar , Mitra Samiran , Bansal Raj Kumar , Dahlenburg Lutz 
Published: May 2005

Abstract
The tetranuclear dimethyltin(IV) complex (L)SnMe2(µ3-O)(SnMe2)2(µ3-O)SnCl2Me2, which was obtained from Me2SnCl2 and the tetradentate Schiff base ligand N-2-[3′-(methoxysalicylideneimino)benzyl]-3′-methoxysalicylideneimine (H2L) avoiding strictly moisture-free conditions, displays one seven and three five-coordinate dimethyltin moieties bridged by two µ3-oxo groups as the basic structural features. Retention of solid state structure in solution is indicated by NMR spectra.
Lithium Magnesium Manganese Oxides Prepared from Mg-Birnessite or Mg-Todorokite by a LiNO3 Flux Method
Authors: Yang Xiaojing , Kanoh Hirofumi , Tang Weiping , Liu Zong-huai , Ooi Kenta 
Published: May 2005

Abstract
Layered and fibrous crystals of spinel-type lithium magnesium manganese oxide have been synthesized from Mg-containing birnessite and todorokite precursors respectively by a topotactic reaction in a LiNO3 flux at 400 °C.
Reaction of Vinyltitanium(IV) Species Prepared by the Alkylation of Titanium–Vinylcarbene Complexes
Authors: Takeda Takeshi , Saeki Naoko , Takagi Yasuhiro , Fujiwara Tooru 
Published: May 2005

Abstract
Vinyltitanium(IV) species prepared by the alkylation of titanium–vinylcarbene complexes with tert-butyl chloride reacted with aldehydes to give allylic alcohols. The reaction of vinyltitanium species with terminal alkynes produced conjugated dienes, in which a vinyl group regioselectively bonded to the unsubstituted side of carbon–carbon triple bond.
Phthalocyanines Obtained from Phthalonitriles with Phenyl Derivatives: A New Method for the Synthesis of the Phthalonitriles by Use of Suzuki-Coupling Reaction
Authors: Sugimori Tamotsu , Okamoto Satoru , Kotoh Naoko , Handa Makoto , Kasuga Kuninobu 
Published: May 2005

Abstract
Phthalocyanines peripherally introduced with four phenyl derivatives have been prepared from the corresponding phthalonitriles, which were obtained in high yields with Suzuki-Miyaura coupling. It was found that the substituent groups on the pc ring significantly affect the spectral properties and solubilities in chloroform.
Carbon Black and Carbon Nano-Tubes Produced from Acetylene Using Non-Thermal Plasmas at Atmospheric Pressure
Authors: Zhang Yue-ping , Liu Chang-jun , Zhang Min-hua 
Published: May 2005

Abstract
DC pulsed corona discharge plasmas have been applied for the co-generation of carbon black and carbon nano-tubes from acetylene and hydrogen under ambient conditions. The carbon nano-tubes thus produced were analyzed by transmission electron microscopy. In the case of pure acetylene feed, only carbon black is produced.
Rapid Synthesis of New Emitting Ir(III) Polypyridine Complexes
Authors: Yoshikawa Naokazu , Masuda Yoshitaka , Matsumura-Inoue Takeko 
Published: May 2005

Abstract
A microwave-assisted synthesis of photosensitive iridium(III) polypyridine complexes has been developed. The spectroscopic and electrochemical properties of the newly prepared complexes were studied. These complexes were characterized by intense phosphorescence emission from 505 nm to 630 nm.
Synthesis and Characterization of p-tert-Butylcalix[6]-1,4-crown-4-2,6-crown-5, p-tert-Butylcalix[6]-1,4-benzocrown-4-2,3-crown-5
Authors: Chen Yuan-Yin , Li Hai-Bing 
Published: May 2005

Abstract
Two new types of calix[6]-bis-crowns, p-tert-butylcalix[6]-1,4-crown-4-2,6-crown-5 and p-tert-butylcalix[6]-1,4-benzocrown-4-2,3-crown-5, have been synthesized and characterized. The conformation of p-tert-butylcalix[6]-1,4-crown-4-2,6-crown-5 may be (u,d,d,u,d,d) or (u,d,u,u,u,d), and can not be further assigned, the latter adopts (u,u,u,u,u,u) conformation at room temperature.
Nano-Phase Separation in the Monolayer Composed of α-Helical Copolypeptide at Air/Water Interface
Authors: Yokoi Hidenori , Kinoshita Takatoshi , Tsujita Yoshiharu , Yoshimizu Hiroaki 
Published: May 2005

Abstract
Nanometer-scale stripe pattern in the monolayer composed of α-helical copolypeptide was characterized with atomic force microscope (AFM). This monolayer was formed with the copolypeptide composed of poly(ε-benzyloxycarbonyl l-lysine)x-poly[(γ-methyl l-glutamate)y-z/(l-glutamic acid)z] (PLLZx–P(MLGy-z/LGAz)). AFM image of Langmuir–Blodgett (LB) film of this copolypeptide showed a nanometer-scale stripe pattern. This pattern seems to be based on the nanophase-separated structure in the copolypeptide monolayer at air/water interface.
Design of Homooxacalix[3]arene–Porphyrin Heterocapsules Which Provide Novel Cavities for Molecular Recognition
Authors: Ikeda Atsushi , Sonoda Kenshi , Shinkai Seiji 
Published: May 2005

Abstract
A novel heterocapsular molecule has been obtained in a self-assembled manner by a multi-point interaction between pyridine-appended homooxacalix[3]arene and a Zn(II) porphyrin trimer. The cavity delineated by π-basic components can accept [60]fullerene with K = 60 dm3 mol−1 at −30 °C.
Synthesis and Crystal Structure of a New Two-Dimensional Coordination Polymer, {[CoII(imbz)2]·H2O}n [imbz− = 4′-(Imidazol-1-ylmethyl)benzoate Anion]
Authors: Sun Wei-Yin , Zhang Yan-An , Okamura Taka-aki , Ye Tao , Ueyama Norikazu 
Published: May 2005

Abstract
A new coordination polymer, {[CoII(imbz)2]·H2O}n [imbz− = 4′-(imidazol-1-ylmethyl)benzoate anion] was synthesized and characterized by X-ray crystallography. Each Co(II) atom is coordinated by four imbz ligands, two of which using N atoms of imidazole and the other two using O atoms of benzoate, and each imbz ligand connects two Co(II) to generate an infinite 2D network. The crystal water molecules locate in the voids of two adjacent layers through C–H---O and O–H---O hydrogen bonds.
Radical-Mediated Synthesis of Substituted Quinones with Organotellurium Compounds
Authors: Yamago Shigeru , Hashidume Masahiro , Yoshida Jun-ichi 
Published: May 2005

Abstract
Carbon-centered radicals generated from the corresponding organotellurium compounds react with a variety of quinones under photo–thermal conditions to give the monoaddition product in good to excellent yield. The reaction can be used for the synthesis of polyprenyl quinoid natural products.
Diels–Alder Reaction of Tribenzo[b,g,l]thiopheno[3,4-q]porphyrazine as a New Path for Porphyrazine Core Modification
Authors: Nemykin Victor N , Polshina Ann E , Kobayashi Nagao 
Published: May 2005

Abstract
Diels–Alder reaction between tribenzo[b,g,l]thiopheno[3,4-q]porphyrazine and dimethyl acetylenedicarboxylate at ca. 200 °C produced a substituted tribenzo[b,g,l]porphyrazine and 3:1 unsymmetrically substituted phthalocyanine, which were characterized by UV-VIS, MCD, NMR, and mass spectroscopies.
Polysaccharide–Polynucleotide Complexes (III): A Novel Interaction between the β-1,3-Glucan Family and the Single-Stranded RNA Poly(C)
Authors: Kimura Taro , Koumoto Kazuya , Sakurai Kazuo , Shinkai Seiji 
Published: May 2005

Abstract
We measured circular dichroism spectra to examine the complex-formation capability of various kinds of polysaccharides with poly(C). The results show that schizophyllan and lentinan can interact with poly(C), on the other hand, amylose, pullulan, dextran, and curdlan cannot. This difference clearly indicates that the water soluble β-1,3-glucan can bind with polynucleotides. The molecular weight dependence of the complex formation has established that at least 30 glucose sequence length is necessary to incorporate the most bases into the complex.
Different Crystal Structures of Novel Cyano-Bridged Complexes: One-Dimensional Chain of [Sm(DMA)2(H2O)4Fe(CN)6·5H2O]n and Trinuclear {[Gd(DMA)3(H2O)4]2Fe(CN)6}Fe(CN)6·3H2O
Authors: Yan Bing , Chen Zhida 
Published: May 2005

Abstract
Two novel cyano-bridged rare earth-iron complexes have been synthesized based on the reaction of K3Fe(CN)6, Ln(NO3)3·6H2O (Ln = Sm, Gd) and N,N-dimethylacetamide (DMA). It is interesting that the two complexes exhibit the different coordination form and crystal structure, in which [Sm(DMA)2(H2O)4Fe(CN)6·5H2O]n ([SmFe]n), shows one-dimensional chain structure with approximately parallel two CN bridging ligands between Sm atom and Fe atom, while {[Gd(DMA)3(H2O)4]2Fe(CN)6}Fe(CN)6·3H2O ([Gd2Fe]) is an isolated trinuclear Gd(1)–Fe–Gd(2) complex with two approximately perpendicular CN bridging ligands between the two Gd atoms and Fe atom. Among [SmFe]n complex exhibits critical temperature Tc = 3.5 K.
Resolution of Unfunctionalized Epoxides by Cholic Acid Inclusion Compounds
Authors: Bortolini Olga , Fantin Giancarlo , Fogagnolo Marco , Medici Alessandro , Pedrini Paola 
Published: May 2005

Abstract
A simple method for the optical resolution of several unfunctionalized epoxides by inclusion in cholic acid is presented. (ee values up to 95%).
Tetracyanoquinodimethane Deposited from Solution onto the Atomically Smooth Native Oxide Surface of an Al(111) Film Characterized by X-ray Photoelectron Spectroscopy and Atomic Force Microscopy
Authors: Higo Morihide , Yoshidome Toshifumi , Ozono Yoshihisa 
Published: May 2005

Abstract
Tetracyanoquinodimethane (TCNQ) deposited from acetonitrile solutions onto atomically smooth native oxide surfaces of Al(111) films was characterized by X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). The XP spectra and the bearing analysis of the AFM images show that TCNQ is adsorbed onto the oxide surface as both a uniform film of anions on a nanometer scale and micron sized particles of neutral molecules.
Adsorption of Zinc-Metallated Chlorophyllous Pigments on FSM-Type Mesoporous Silica
Authors: Furukawa Hiroyasu , Kuroda Kazuyuki , Watanabe Tadashi 
Published: May 2005

Abstract
The spectroscopic properties of zinc chlorophyll (Zn-Chl) derivatives within FSM-type mesoporous silica were examined. Visible absorption and resonance Raman spectroscopies suggest that chlorophyllous pigments are successfully incorporated and form hydrogen bonds to silanol groups on silica.
Enantioselective Aggregation of Cobalt(III) Octahedrons in a One-Dimensional S-Bridged CoIIIAgI Array That Leads to Spontaneous Resolution
Authors: Konno Takumi , Tokuda Keiji , Okamoto Ken-ichi , Hirotsu Masakazu 
Published: May 2005

Abstract
The reaction of [Co(aet)(en)2](NO3)2 (1(NO3)2; aet = 2-aminoethanethiolate; en = ethylenediamine) with AgNO3 in water produced a novel S-bridged CoIIIAgI chain complex-polymer, [Ag{Co(aet)(en)2}](NO3)3 (3(NO3)3), by way of a CoIIIAgICoIII trinuclear complex, [Ag{Co(aet)(en)2}2](NO3)5 (2(NO3)5). The crystal structure of 3(NO3)3, which crystallizes as a conglomerate, was determined by X-ray crystallography.
Remarkable Enhancement of Nucleophilicity of Tin Enolates toward Nitro- or Cyanoalkenes by Tetrabutylammonium Halides
Authors: Yasuda Makoto , Ohigashi Noriyuki , Baba Akio 
Published: May 2005

Abstract
The reaction of tin enolates with nitroalkenes was effectively catalyzed by tetrabutylammonium bromide (Bu4NBr) to give γ-nitroketones. When the substituted tin enolates at the β-carbon in the olefinic moiety were used, the diastereoselective addition proceeded through the acyclic transition state. Tetrabutylammonium chloride (Bu4NCl) strongly accelerated the reaction with the cyanoalkene to give the γ-cyanoketone.