bluuebunny/crossref_metadata_2025_split huggingface dataset:
Charge-Transfer Interaction between Phenothiazine- and Viologen Moieties Adsorbed to Quartz-Solution Interface as Studied by Optical Second Harmonic Generation (SHG)
Authors: Toki Akira , Yonemura Hiroaki , Yamada Sunao , Matsuo Taku 
Published: March 2006

Abstract
As to phenothiazine-viologen pair at quartz-solution interface, SHG was verified to serve as an excellent probe for charge-transfer interaction. The SHL intensity rapidly increased with the decrease of solvent polarity.
Copper(II) Mixed Ligand Complex with an N-Alkylated Diamine and a New β-Diketonate
Authors: Jalilehvand Farideh , Ishii Youichi , Hidai Masanobu , Fukuda Yutaka 
Published: March 2006

Abstract
Reaction of two acetylacetones with p-anisaldehyde resulted in a new β-diketonate ligand which can form a mixed ligand Cu(II) complex with an N-alkylated ethylenediamine. The X-ray structure of the complex was determined and its chromotropic property in solution characterized.
Evidence for the Equilibrium and Estimation of the Equilibrium Constants between Molecular Complexes and Trigonal Bipyramidal Adducts of Diaryl Selenide Dibromides in Solution
Authors: Nakanishi Warô , Hayashi Satoko 
Published: March 2006

Abstract
The equilibrium is clearly shown between molecular complexes (MC’s) and trigonal bipyramidal adducts (TB’s) in 2-O2NC6H4SeBr2C6H4Y-p in solution. The equilibrium constants are also estimated. Both TB’s and MC’s become unstable when the effective electronegativity of the selenium atom and the bulkiness around the atom in a selenide are increased, however, the magnitude is larger for TB’s than for MC’s.
The Central C–C Bond Length in the Bi(anthracene-9,10-dimethylene) Photoisomer: Unusual Elongation and Crystalline State Reaction
Authors: Harada Jun , Ogawa Keiichiro , Tomoda Shuji 
Published: March 2006

Abstract
Crystal structure analysis of bi(anthracene-9,10-dimethylene) photoisomer (1) revealed that the anomalous elongation of the central C–C bond in the previously reported X-ray structure is an artifact caused by partial cycloreversion of 1 to no-bonded isomer in crystalline state.
Formation of a DNA Complex with Lipoglutamide Having Tetraethyleneglycol Tails and Its Interaction with a Tumor Cell
Authors: Sato Toshinori , Akino Hiroyuki , Okahata Yoshio 
Published: March 2006

Abstract
A cationic lipoglutamide having tetraethyleneglycol tails was synthesized. A DNA complex with the cationic lipoglutamide was formed in water, and showed efficient uptake into Hela cells.
One-Pot Synthesis of Perfluorobutyl-Substituted Polysilyne
Authors: Watanabe Akira , Ito Osamu , Miwa Takao 
Published: March 2006

Abstract
One-pot synthesis of perfluorobutyl-substituted polysilynes from perfluorobutyl iodide and tetrachlorosilane was achieved by electrochemical reduction using a magnesium working electrode. Absorption and emission spectra of those polymers showed characteristics of a silicon network polymer.
Tris(2-aminoethyl)amine, a Suitable Spacer for Phosphate and Sulfate Receptors
Authors: Raposo César , Almaraz Marta , Martín Mercedes , Weinrich Volker , Mussóns Mª Luisa , Alcázar Victoria , Caballero Mª Cruz , Morán Joaquín R. 
Published: March 2006

Abstract
Tris(2-aminoethyl)amine and cis-1,3,5-tris(aminomethyl)cyclohexane have been checked as spacers for phosphate receptors. Ureas are better binding arms than thioureas for these spacers while the combination of this first functional group with chromenone fragments permits further increases in the phosphate and sulfate association constants.
Amino Acid Exchange Reaction of Bis(pyridoxylidene-amino acidato)cobalt(III) Complex Promoted by the α-Hydroxylation
Authors: Jitsukawa Koichiro , Yamamoto Tetsuya , Takahashi Hiroshi , Masuda Hideki , Einaga Hisahiko 
Published: March 2006

Abstract
A new type of amino acid exchange reaction that is promoted by the α-hydroxylation was found to proceed on the bis(pyridoxylidene-α-hydroxyamino acidato)cobalt(III) complexes under aerobic conditions.
Reactivity of Cation Radicals Generated from Trivalent-Phosphorus Compounds in the Reaction with Methylviologen: Kinetic Analysis
Authors: Yasui Shinro , Shioji Kosei , Tsujimoto Munekazu , Ohno Atsuyoshi 
Published: March 2006

Abstract
Cation radicals generated from trivalent-phosphorus compounds through single-electron transfer to methylviologen undergo ionic reactions with alcohols or thiols. A kinetic analysis of the reactions has suggested that the reaction of the trivalent-phosphorus cation radicals with alcohols possesses a tighter transition state than that with thiols.
Photoaddition Reaction of 1,4-Diethynylbenzene to Tetramethyl-1,4-benzoquinone and Photochemical Transformation of the Photoadducts
Authors: Kim Sung Sik , Kim Ae Rhan , O Kwang Joong , Yoo Dong Jin , Shim Sang Chul 
Published: March 2006

Abstract
Irradiation of a dichloromethane solution of tetramethyl-1,4-benzoquinone and 1,4-diethynylbenzene with 300 nm UV light yields three kinds of photoadducts which are interconverted photochemically into their corresponding isomers.
High Br− Ionic Conductivity for (1−x)PbBr2· xKBr System
Authors: Aono Hiromichi , Sugimoto Eisuke 
Published: March 2006

Abstract
The electrical conductivity of (1−x)PbBr2 ·xKBr solid electrolytes enhanced with increasing x up to x = 0.02, where 2.7 × 10−6 S · cm−1 at 298 K was obtained. The carrier ion for this system was Br−, as determined by the Tubandt’s method.
Conversion of N-Acyllactams into α-Alkylated Cyclic Enamides via Vinyl Triflates
Authors: Tsushima Kazunori , Hirade Tetsuya , Hasegawa Hirohiko , Murai Akio 
Published: March 2006

Abstract
N-Acylated six- or seven-membered lactams were converted effectively into various α-alkylated cyclic enamides via their corresponding vinyl triflates.
Achiral Molecules Move and Order Themselves in a Chiral Form in Host-Guest Inclusion Crystals
Authors: Toda Fumio , Miyamoto Hisakazu 
Published: March 2006

Abstract
When optically active host compound was mixed with achiral guest compound in the solid state, host-guest inclusion crystals were formed by molecular movement and the achiral molecules became arranged in a chiral form in the inclusion crystals. Mixing of powdered (+)-host crystals with powdered (−)-guest crystals which are formed by a chiral arrangement of achiral guest molecules gave inclusion crystals of the (+)-host and the (+)-guest molecules newly produced through an inversion of the (−)-guest molecules during the complexation in the solid state.
The First X-Ray Structural Analysis and Photolysis of Germatetrasilacyclopentanes
Authors: Suzuki Hideo , Kenmotu Nozomu , Tanaka Ken , Watanabe Hamao , Goto Midori 
Published: March 2006

Abstract
The five-membered ring system, germatetrasilacyclopentane, [R2Si]4GePh2 (1a: R = iPr; 1b: R = tBuCH2), was synthesized and characterized. Their structures have been determined by X-ray analysis, which showed the Si4Ge rings of 1a and 1b to be an envelope and half-chair form, respectively. The photolyses of the compounds using a mercury lamp ( λ = 254 nm) were carried out.
An Improved Anion-Exchange Separation for the Determination of Platinum in Environmental Samples by Inductively Coupled Plasma Mass Spectrometry
Authors: Akatsuka Kunihiko , Hoshi Suwaru , Katoh Takunori , Willie S N , McLaren J W 
Published: March 2006

Abstract
A new and practical column separation/preconcentration method for the determination of Pt in environmental samples is proposed. The method has been successfully applied to the determination of Pt in a tunnel dust sample with isotope dilution ICP-MS. A key to its success is an anion-exchange separation of Pt from Hf.
Lanthanoid Metal Promoted Reaction of Diaryl Ketones and Thioketones with Isocyanides
Authors: Makioka Yoshikazu , Tsuno Masumi , Takaki Ken , Taniguchi Yuki , Fujiwara Yuzo 
Published: March 2006

Abstract
Ytterbium and samarium metals promote the coupling reaction of diaryl ketones and thioketones with isocyanides, leading to 2,2-diaryl-2-hydroxyethylideneamines and 2-amino-1,1-diarylethylene, respectively, in fairly good yields.
Synthesis of Novel Clustered Glycopolymers Containing Triantennary Glycosides of N-Acetyllactosamine
Authors: Furuike Tetsuya , Nishi Norio , Tokura Seiichi , Nishimura Shin-Ichiro 
Published: March 2006

Abstract
An efficient method for the first synthesis of novel glycopolymers containing triantennary glycosides of N-acetyllactosamine [Galpβ(1→4)GlcpNAc] is described. Radical copolymerization of the triantennary glycosides with acrylamide proceeded smoothly in an aqueous solution and gave water-soluble clustered glycopolymers.
Computational Study of Stability and Pseudorotation of Cyclic Penta-coordinated Phosphorous Compounds
Authors: Wasada Hiroaki , Tsutsui Yuko 
Published: March 2006

Abstract
We studied ligand effects to the pseudorotation of cyclic penta-coordinated phosphorous compounds [PX3C4H8] , X = CH3, NH2, OH, F, Cl and H using ab initio molecular orbital methods. The most stable structures and transition states are characterized. These are fundamental data for the control of reaction occurring in this type of compounds.
Thermal Retrocycloaddition of Overcrowded Germirenes. A New Method for the Generation of Germylenes
Authors: Tokitoh Norihiro , Kishikawa Kuniyuki , Matsumoto Tsuyoshi , Okazaki Renji 
Published: March 2006

Abstract
Thermolysis of overcrowded 2,3-diphenylgermirenes bearing bulky substituents on the germanium atom in benzene affords the corresponding kinetically stabilized germylenes, the efficient formation of which is evidenced by the trapping experiments with 2,3-dimethyl-1,3-butadiene. This provides a new and mild method for the generation of germylenes.
Reaction of α-Hydroxydichloromethyl Derivatives with Cesium Acetate
Authors: Sato Ken-ichi , Suzuki Katsuhiko , Hashimoto Yoshihisa 
Published: March 2006

Abstract
The reactions of methyl 4,6-O-benzylidene-2-O-benzoyl- and -2-O-methyl-α-d-ribo-hexopyranosid-3-ulose with dichloromethyllithium gave the corresponding α-hydroxydichloromethyl derivatives in 75% and 87% yields, respectively. The structures of these products were determined by derivation into known compounds, respectively. A novel reaction of dichloromethyl derivatives with cesium acetate was found to give 3-α-hydroxyaldehyde or 3-α-acetoxyaldehyde derivative as a main product. SN2 inversion via spirochloroepoxide was suggested in this reaction by determining configuration of each product.
High Yield Synthesis of High Purity [18F]-Labelled Aromatic Compounds by Aryl F-for-X Halogen Exchange Reactions
Authors: Hashizume Kazunari , Hashimoto Naoto , Cork David G , Miyake Yoshihiro 
Published: March 2006

Abstract
The relative efficacy of aromatic fluorine-for-halogen (F–X) exchange reactions was found to be F–F &gt; F–Cl &gt; F–Br &gt; F–I in a [18F]fluoride-cryptand-oxalate system using 4′-halo-acetophenones (F, Cl, Br and I), key intermediates for many 18F-radiopharmaceuticals. Efficient 18F-labelling reaction and a new chromatographic separation method has enabled the potential of F-for-X exchange (X = Cl and F) to be realized for the high yield synthesis of high purity [18F]-neuroleptics.
The Effect of Cobalt(II) Complex on the Reactivity of Thioester in Radical Process
Authors: Tada Masaru , Kaneko Katsuyuki 
Published: March 2006

Abstract
The 1,2-rearrangement of an (alkylthio)carbonyl group and the radical substitution on sulfur are stimulated by the coexisting cobalt(II) complex, generated intermolecularly or intramolecularly.
Novel Photochemical Coupling of Hindered Phenols in the Presence of Acridine Mechanistically Probed by CIDEP
Authors: Okada Keiji , Okubo Katsura , Oda Masaji , Murai Hisao 
Published: March 2006

Abstract
Irradiation of hindered phenols in the presence of acridine as a light absorber gives bisphenols and biacridane. CIDEP study establishes the path of hydrogen abstraction by the triplet acridine. The overall mechanism is proposed by the product analysis and the CIDEP studies.
Ab Initio Calculations of Entropy and Heat Capacity of 1,1,1,2-Tetrafluoroethan (HFC-134a)
Authors: Nakao Taketoshi , Kobayashi Yoshinori , Wakabayashi Hisao , Takaichi Kenji 
Published: March 2006

Abstract
Constant-pressure molar specific heat and entropy of 1,1,1,2-tetrafluoroethane at several temperatures were calculated by adopting ab initio molecular orbital theory and utilizing a double split valence type basis set. The calculated values for temperatures between −20.0 and 100.0 °C and a constant pressure of 101.3 kPa showed agreement with experimental results within 0.8 Jmol−1K−1 for entropy and within 3.3 Jmol−1K−1 for constant-pressure molar specific heat in the temperatures. However, some modification to the present approach is necessary for evaluating the pressure dependence of constant-pressure molar specific heat.
Stereodynamics of N-Phenyl-9-triptycylamine as a Gear-rotation System
Authors: Yamamoto Gaku , Higuchi Hiroyuki , Yonebayashi Masami , Nabeta Yuki , Ojima Juro 
Published: March 2006

Abstract
13C Dynamic NMR study of N-phenyl-9-triptycylamine (3) reveals that “gear rotation” and “isolated rotation” in 3 have almost the same free-energy barriers of ca. 10.8 kcal mol−1.
Monomeric 10-Sb-5 Pentacoordinate Organoantimony Monohalides and Their Permutational Behavior
Authors: Kojima Satoshi , Takagi Ryukichi , Nakata Hisashi , Yamamoto Yohsuke , Akiba Kin-ya 
Published: March 2006

Abstract
Pentacoordinate organoantimony monohalides [o-O(CF3)2C6H4]2SbX (X = F, Cl, Br, I) were found to topologically permutate intramolecularly as monomers with energy barriers in the order of F &lt; Cl &lt; Br &lt; I in toluene and Br &lt; Cl &lt; I &lt; F in THF.
Significant Enantioselectivity in Alanine Ester Hydrolysis Catalyzed by Imidazole Attached β-Cyclodextrins
Authors: Hamasaki Keita , Ueno Akihiko 
Published: March 2006

Abstract
Imidazole-appended β-cyclodextrins, 3-deoxy-3-imidazolyl-β-cyclodextrin (3Im-βCyD) and 6-deoxy-6-imidazolyl-β-cyclodextrin (6Im-βCyD) were synthesized as substrate selective enzyme mimics. 6Im-βCyD shows marked enantioselectivity in the hydrolysis of Boc-alanine p-nitrophenyl ester rather than 3Im-βCyD. This selectivity could be interpreted by transition stability theory.
Charge-Transfer Complex Formation by Grinding Crystals of Donor and Acceptor
Authors: Toda Fumio , Miyamoto Hisakazu 
Published: March 2006

Abstract
By grinding tetracyanoquinodimethane and tetrathiafulvalene or tetrathianapthacene powders, the corresponding charge-transfer complexes were formed, which showed similar electrical conductivity to those prepared by a recrystallization method.
Highly Active Electrocatalytic Water Oxidation System Composed of Trinuclear Ruthenium Complex Supported on Platinum Black
Authors: Yagi Masayuki , Ogino Isamu , Miura Atsushi , Kurimura Yoshimi , Kaneko Masao 
Published: March 2006

Abstract
Trinuclear Ruthenium complex, Ru-red ([(NH3)5Ru-O-Ru(NH3)4-O-Ru(NH3)5]6+) is adsorbed well onto the electrodeposited Pt-black, and the adsorbed Ru-red works as a highly active catalyst for electrochemical water oxidation
Transannular Cyclization Reaction of Humulene 2,3-Epoxide. Formation of a Compound Shaping TC Conformer
Authors: Hayano Kiyoharu , Shirahama Haruhisa 
Published: March 2006

Abstract
Treatment of humulene 2,3-epoxide (5) with boron trifluoride etherate at 0 °C gave (6E)-(1R*,2R*,3S*,10R*)-3-acetoxy-2,5,5-trimethylbicyclo[8.1.0]undeca-6,9(15)-diene and (4E)-(1S*,2S*,8S*,9S*)-2,8-diacetoxy-2,6,6,9-tetramethylbicyclo[7.2.0]undec-4-ene which corresponded to the transannular bond formation products shaping the CT and TC conformers of 5, respectively.
The Influence of Vibrational Excitation of NO+(X1Σ+:v″) on the Formation of NO(A2Σ+) by the NO+ + SF6− Neutralization Reaction at Thermal Energy
Authors: Tsuji Masaharu , Ishimi Hiroaki , Nishimura Yukio 
Published: March 2006

Abstract
The NO(A2Σ+-X2Πr) emission resulting from the mutual ion-ion neutralization reaction between NO+(X1Σ+) and SF6− has been measured at various source gas pressures of NO+ in a flowing afterglow in order to examine the influence of vibrational excitation in NO+(X:v″). It was found that vibrational excitation in NO+(X:v″) results in vibrational excitation of the product NO(A:v′=v″) molecule with a low rotational excitation.
Surface Tension of Polysilanes Having Oxyethylenic Side Chains
Authors: Oka Kunio , Fujiue Naofumi , Nakanishi Saburo , Takata Toshikazu , Dohmaru Takaaki , Yuan Chien-Hua , West Robert 
Published: March 2006

Abstract
Polysilanes having oxyethylenic side chains, {CH3-Si-CH2CH2CH2O(CH2CH2O)mR1}n where (m = 0,1,2,3) and R1 = CH3 and C2H5, have been prepared. A polysilane of m = 3 and R = CH3 is soluble in alcohols, acetonitrile, and water. Surface tensions of these polysilanes are larger than those of the polysilanes ever reported. While dispersion component stays almost constant(ca. 30–40 dyn/cm), polar component increases with increasing oxygen atom numbers in the side chain. Copolymers also keep the high values of surface tension.
Novel Molecular Arrangement in Asymmetric Bilayered Crystals of the Inclusion Compounds of 3α, 12α, 24-Trihydroxy-5β-cholane
Authors: Sada Kazuki , Matsuo Akemi , Miyata Mikiji 
Published: March 2006

Abstract
A novel molecular arrangement in asymmetric bilayered crystals is described. 3α, 12α, 24-trihydroxy-5β-cholane with benzene clathrate (2:1) have multibilayer structure with parallel fashions both in the lipophilic sites and in the hydrophilc sites.
Imaging of One-Dimensional Conducting Pt Complexes Using Atomic Force Microscopy
Authors: Kawasaki Tatsuji , Jiang Lei , Iyoda Tomokazu , Araki Toshinari , Tryk Donald A , Hashimoto Kazuhito , Fujishima Akira 
Published: March 2006

Abstract
One-dimensional conducting Pt complexes were investigated by atomic force microscopy (AFM). In large scale images, layered structure was observed, which indicated a layer-spreading crystal growth mechanism. The molecular resolution images show the arrangement of the cyanide ligands on the (010) face with a = 9.3 ± 0.4 Å and c = 5.3 ± 0.4 Å.
Two New 7-Geranyloxycoumarins from the Bark of Aegle Marmelos, an Indonesian Medicinal Plant
Authors: Ohashi Kazuyoshi , Watanabe Hisashi , Ohi Katsuhide , Arimoto Hirokazu , Okumura Yasuaki 
Published: March 2006

Abstract
Two new 7-geranyloxycoumarins, chloromarmin and aeglin, were isolated from the bark of Aegle marmelos, and their structures were assigned to be 7-(7-chloro-6R-hydroxy-3,7-dimethyl-2-octenyloxy)coumarin (1) and 7-[6R-(β-d-glucopyranosyloxy)-4R,7-dihydroxy-3,7-dimethyl-2-octenyloxy]coumarin (2), respectively.
d-f Metal Ion Interaction through Fe-C≡N-Ln Bridge between Dicyanobis(1,10-phenanthroline)iron(II) Complex and LnCl3
Authors: Harada Kazumasa , Yuzurihara Junko , Ishii Youichi , Sato Noriko , Kambayashi Hide , Fukuda Yutaka 
Published: March 2006

Abstract
By adding lanthanoid ion (Ln) to a solution of non-charged iron(II) complex, [Fe(CN)2(phen)2], the blue shift in MLCT band of the Fe(II) complex was observed in ethanol, but was not in DMSO. The extent of the band shift depends on the lanthanoid ion size, which is explained by means of Fe-C≡N-Ln interaction. In DMSO, however, the lanthanoid ion is solvated too strongly to form the Fe-C≡N-Ln bridging. The existence of the bridging mode was confirmed by means of the crystal analysis for a Fe2Yb2 tetranuclear complex.
Raman Spectra of LiCo1−yNiyO2
Authors: Inaba Minoru , Todzuka Yasufumi , Yoshida Hiroyuki , Grincourt Yves , Tasaka Akimasa , Tomida Yoshiro , Ogumi Zempachi 
Published: March 2006

Abstract
Raman spectra of lithium-cobalt-nickel oxide, LiCo1−yNiyO2 (0 ≤ y ≤ 1), which is a promising material for the cathodes of secondary lithium batteries, were studied. By factor group analysis, Raman-active modes of LiCoO2 (y = 0) were assigned as A1g + Eg, and their atomic displacements were speculated. The theoretical results were confirmed by the observed two strong Raman band of LiCoO2 (y = 0). With replacing Co with Ni, the intensities of both bands decreased drastically, and the peak wavenumbers of the lower and upper bands were up- and down-shifted, respectively.
Novel Reversible Metallacyclization in [Ru(bpy)2(η1-napy)(CO)]2+ (bpy = 2,2-bipyridine, napy = 1,8-naphthyridine) by Intramolecular Attack of Non-Bonded Nitrogen of napy to Carbonyl Carbon
Authors: Nakajima Hiroshi , Tanaka Koji 
Published: March 2006

Abstract
One-electron reduction of [Ru(bpy)2(η1-napy)(CO)]2+ (bpy = 2,2-bipyridine, napy = 1,8-naphthyridine) induces a reversible attack of non-bonded nitrogen of napy to carbonyl carbon producing a five-membered metallacyclic moiety.
Electronic Spectrum of Jet-Cooled 9-Hydroxyphenalenone-d. Vibrational Mode Specific Proton Tunneling in the S0 State
Authors: Sekiya Hiroshi , Nakano Naohiko , Nishi Kaori , Hamabe Hidenori , Sawada Tsuyoshi , Tashiro Masashi , Nishimura Yukio 
Published: March 2006

Abstract
The fluorescence excitation and dispersed fluorescence spectra of jet-cooled 9-hydroxyphenalenone-d have been measured to investigate vibrational mode specific proton tunneling in the S0 state. Tunneling splittings of a few vibrationally excited states have been determined.
Emission Spectra of HeArn+ (n = 1–3) Cluster Ions Produced from the Helium Afterglow Reactions of Ar
Authors: Tsuji Masaharu , Tanaka Makoto , Nakamura Masafumi , Nishimura Yukio 
Published: March 2006

Abstract
The HeAr+(B2Σ+-X2Σ+,B2Σ+-A22Π1⁄2) emissions resulting from the two-body He+/Ar and three-body He+/Ar/He reactions were observed in the He afterglow reaction of Ar at low Ar pressures below ∼0.14 Torr. At high Ar pressures, new broad bands appeared in the 143-168 nm region. They were ascribed to the B-X and B-A2 transitions of the HeArn+ (n = 2,3) cluster ions.
Highly Selective Solvation of Monopositive Metal Ions in the Gas Phase as Revealed by the Laser Ablation-Molecular Beam Method Using Ammonia-Water Binary Clusters
Authors: Ito Osamu , Horiki Yasuhiro , Nishio Satoru , Matsuzaki Akiyoshi , Sato Hiroyasu 
Published: March 2006

Abstract
Complex formation of metal ions Mg+, Al+, Mn+ and Co+ with ammonia-water binary clusters has been studied by the laser ablation-molecular beam method. While highly selective solvation favoring ammonia was observed for Mn+ and Co+, relatively nonselective solvation was realized for Mg+ and Al+.
Biotransformation of Safflower Yellow B to Carthamin, A Coloring Matter of Safflower
Authors: Onodera Jun-ichi , Kawamoto Ken-ichi , Matsuba Shigeru , Sato Shingo , Kojima Hironori , Kaneya Yuichi , Obara Heitaro 
Published: March 2006

Abstract
Safflower yellow B, one of the yellow coloring components of safflower (Carthamus tinctorius L.), was transformed to red carthamin and safflomin-A in cultured safflower cells. This result suggests that carthamin and other yellow coloring matters are biogenetically derived from safflower yellow B in the florets of safflower.
Stereoselective Cyclopolymerization of 1,5-Hexadiene Using Novel Bis(ferrocenyl)zirconocene Catalyst
Authors: Mitani Makoto , Oouchi Kunihiro , Hayakawa Michiya , Yamada Tohru , Mukaiyama Teruaki 
Published: March 2006

Abstract
A novel heterotrinuclear zirconium-iron complex 1 was synthesized and crystal structure of 1 was determined by X-ray diffraction method. The complex 1 efficiently catalyzed cyclopolymerization of 1,5-hexadiene in the coexistence of methylaluminoxane to afford trans-poly(methylene-1,3-cyclopentane) with high stereoselectivity (98% trans).
Optochemical HCl Gas Detection Based on Tetraphenylporphine Dispersed in Ethyl Cellulose
Authors: Sadaoka Yoshihiko , Sakai Yoshiro , Tagliatesta Pietro , Boschi Tristano 
Published: March 2006

Abstract
To detect sub-ppm levels of dry HCl gas, spectral changes of tetraphenylporphine dispersed in ethylcellulose were examined in the visible region. The Soret and Q-bands of free base tetraphenylporphine are sensitive to sub-ppm levels of HCl with a good reversibility and insensitive to NH3, Cl2, NO2 and NO at room temperature.