bluuebunny/crossref_metadata_2025_split huggingface dataset:
Extraction of Metal Ions by Tri-Cationic Anion-Exchange Extractant
Authors: Ohki Akira , Maeda Shigeru , Takeshita Toshio , Takagi Makoto 
Published: July 2006

Abstract
Novel anion-exchange extractants were synthesized, which are lipophilic phosphonium ions bearing three cationic centers in a molecule. By using the tri-cationic extractants, the selectivity toward the extraction of triply charged anions such as hexacyanoferrate(III) was much increased.
Artificial Glutamate Mutase Composed of Hydrophobic Vitamin B12 and Synthetic Bilayer Membrane
Authors: Murakami Yukito , Hisaeda Yoshio , Ohno Teruhisa 
Published: July 2006

Abstract
The alkylated hydrophobic vitamin B12 prepared by the reaction between heptapropyl cobyrinate and diethyl bromomethylaspartate, afforded diethyl glutamate, the rearrangement product, in single-compartment vesicles under anaerobic photolysis conditions.
Pinacol-Type Rearrangement of 1-Methoxybicyclo[3.2.2]nona-3,6-dien-2-ols. An Efficient Route to Homobarrelenones
Authors: Uyehara Tadao , Kawai Yoshinori , Yamada Jun-ichi , Kato Tadahiro 
Published: July 2006

Abstract
Pinacol-type rearrangement of 1-methoxybicyclo[3.2.2]nona-3,6-dien-2-ols proceeds preferentially to give bicyclo[3.2.2]nona-6,8-dien-2-ones by treating with TsOH in boiling benzene. This transformation is incorporable in a new synthesis of homobarrelenone and a large number of its derivatives starting from 1-methoxybicyclo[3.2.2]nona-3,6-dien-2-ones.
New Bis(benzene-1,2-dithiolato)Ni(II) Complexes Having Intense Near-Infrared Absorptions
Authors: Tabushi Iwao , Yamamura Kazuo , Nonoguchi Hiroshi 
Published: July 2006

Abstract
New bis(benzene-1,2-dithiolato)Ni(II)·n-Bu4N having one or two N,N-dimethylamino substituent(s) were prepared. The main characteristic in their electronic absorptions was the intense near-infrared absorption band with a maximum of intensity at 990–1163 nm.
Phosphonylation of Glucose 1-Monophosphate with Diphosphonate
Authors: Baba Yoshinobu , Onoe Mika , Sumiyama Tomoko , Tsuhako Mitsutomo , Yoza Norimasa , Ohashi Shigeru 
Published: July 2006

Abstract
Glucose 1-monophosphate was “phosphonylated” by diphosphonate in an aqueous solution under the mild conditions (60–70 °C, pH 6). Diphosphonate phosphonylated a phosphate group on glucose 1-monophosphate selectively. The yield of a phosphonylated product was 61%. The chemical structure of a phosphonylated product was discussed on its 31P-NMR spectrum and high performance liquid chromatogram.
A Novel Host Compound with High Inclusion Ability, N,N,N′,N′-Tetracyclohexyl-2,2′-biphenyldicarboxamide, and Crystal Structure of Its 1:1 Phenol Complex
Authors: Toda Fumio , Kai Akihiro , Tagami Yasunori , Mak Thomas C W 
Published: July 2006

Abstract
The title host compound forms crystalline inclusion complexes with a wide variety of organic guest molecules. X-Ray analysis of its 1:1 complex with phenol shows that the two molecular components are held together by a O–H···O hydrogen bond of length 2.59(1) Å.
Preparation and Reactions of Optically Active 6-(2,4-Dimethoxybenzyl)-2-[(1′,2′-O-isopropylidene)ethyl]-4-methoxy-3-oxa-7-oxo-6-azabicyclo[3.2.0]heptane. Syntheses of 2-Amino-2,3-dideoxy(branched-chain)sugar Analogues
Authors: Shiozaki Masao , Ishida Noboru 
Published: July 2006

Abstract
A new method for the synthesis of methyl 2,3-dideoxy-2-benzoylamido-3-acetoxymethy1-5,6-O-isopropylidene-α-d-mannofuraroside and other analogues from 2,3-O-isopropylidene-d-glyceraldehyde via a commom β-lactam intermediate is described.
Structure of Monoacylated Anthocyanins Isolated from Red Cabbage, Brassica oleracea
Authors: Idaka Eiichi , Suzuki Kaneyoshi , Yamakita Hiroshi , Ogawa Toshihiko , Kondo Tadao , Goto Toshio 
Published: July 2006

Abstract
Five monoacylated anthocyanins from Brassica oleracea were isolated and their structures determined to be 3-0-(6-0-acyl-2-0-(β-d-glucopyranosyl)-β-d-glucopyranosyl)-5-0-(β-d-glucopyranosyl)cyanidins, in which the acyl group is p-coumaryl, ferulyl, sinapyl, 4-0-(β-d-glucopyranosyl)-E-p-coumaryl, or 4-0-(β-d-glucopyranosyl)-E-ferulyl.
Ionic Conductivity and Structure of New Double Chloride Li6FeCl8 in the LiCl–FeCl2 System
Authors: Kanno Ryoji , Takeda Yasuo , Mori Masashi , Yamamoto Osamu 
Published: July 2006

Abstract
The phase diagram of the LiCl–FeCl2 system was determined. The system contained two intermediate compounds, one the new phase Li6FeCl8 with the Mg6MnO8-type structure and the other Li2FeCl4 with the spinel structure. Electrical conductivity measurements on Li6FeCl8 showed a high ionic conductivity of 2.0×10−3 S cm−1 at 200 °C.
Oxidative Coupling of Methane over a Li2O–BeO System Catalyst
Authors: Matsuura Ikuya , Doi Takao , Utsumi Yasuhide 
Published: July 2006

Abstract
The lithium-added beryllium oxide was studied as a catalyst for the oxidative coupling of methane. For example, 3 mol% Li-added BeO catalyst gave 813 mmol h−1 g−1 of C2-STY and 63% of selectivity under the reaction conditions of 760 °C, P(CH4) = 76.0 kPa, P (CH4)/P(O2) = 3 and W/F = 0.0033 gh l−1. The compound oxide Li2Be2O3 was formed by Li2O mixed with BeO at 700 °C. This compound oxide might be an active catalyst for the oxidative coupling of methane.
A Mild and Convenient Method for the Reduction of Organic Halides by Using a SmI2-THF Solution in the Presence of Hexamethylphosphoric Triamide (HMPA)
Authors: Inanaga Junji , Ishikawa Mitsuhiro , Yamaguchi Masaru 
Published: July 2006

Abstract
A remarkable effect of HMPA was observed in the reduction of organic halides with a SmI2-THF solution. Various types of organic halides were reduced rapidly to the corresponding alkanes in almost quantitative yields under mild reaction conditions.
Synthesis and Reactivity of Imidazole-Appended Dimethyl-β-cyclodextrin
Authors: Ikeda Hiroshi , Kojin Ryoici , Yoon Chul-Joong , Ikeda Tsukasa , Toda Fujio 
Published: July 2006

Abstract
Dimethyl-β-cyclodextrin bearing imidazolylethyl group (2) was firstly synthesized and the catalytic activity of 2 was studied. 2 caused extensive acceleration of the hydrolysis reaction of p-nitrophenyl acetate, whereas dimethyl-β-cyclodextrin caused inhibition of the hydrolysis.
Conformational Competition between n-Alkyl and Oxyethylene Chains in Nonionic Surfactants in the Solid State. A Raman Spectroscopic Study
Authors: Fukuhara Koichi , Matsuura Hiroatsu 
Published: July 2006

Abstract
Raman spectra of 23 nonionic surfactants CH3(CH2)n−1(OCH2CH2)mOH were measured in the solid state. The molecular conformation of these compounds was elucidated on the basis of the conformational competition between the n-alkyl chain which intrinsically favors the extended structure and the oxyethylene chain which favors the helical structure.
Introduction of an Acetonyl Grouping at the C(3) Position of 2,3-Dehydropiperidine via Rearrangement of (β-Aminocyclopropyl)carbonyl Intermediate
Authors: Inokuchi Tsutomu , Takagishi Sadahito , Akahoshi Fumihiko , Torii Sigeru 
Published: July 2006

Abstract
A new and efficient method for introducing 2-oxoalkyl group at the C(3) position of 2,3-dehydropiperidine has been explored based on rearrangement tactics of (β-aminocyclopropyl)carbonyl intermediate.
Acid-Catalyzed Autoxidation of 12-Hydroxyeudesman-3,6-dione to 6,12-Epoxyeudesma-4,6-dien-3-one
Authors: Nagano Hajime , Sugihara Hiroko , Ito Hiroko , Shiota Michio 
Published: July 2006

Abstract
Treatment of a benzene solution of 12-hydroxyeudesman-3,6-dione with p-toluenesulfonic acid in air gave 6,12-epoxyeudesma-4,6-dien-3-one (2) in 57% yield. Dienone 2 was further oxidized to give 7-hydroxyeudesmanes.
Crystal Structures of M(DCNQIs)2 (DCNQIs=N,N′-dicyanoquinonediimines; M=Li, Na, K, NH4, Cu, Ag)
Authors: Kato Reizo , Kobayashi Hayao , Kobayashi Akiko , Mori Takehiko , Inokuchi Hiroo 
Published: July 2006

Abstract
Crystal structures of highly conducting title compounds were determined. The basic structure of all compounds consists of uniform face-to-face columns of acceptor molecules. These columns are connected to each other through N-coordinated cations. The geometry of coordination depends on the counter cation.
Organotin-Mediated Preparation of Monothioacetals
Authors: Sato Tsuneo , Kobayashi Takamitsu , Gojo Tamehisa , Yoshida Enji , Otera Junzo , Nozaki Hitosi 
Published: July 2006

Abstract
Monothioacetals are obtained by treating the corresponding acetals with organotin thiophenoxides in the presence of BF2·OEt2. The reaction proceeds under mild conditions to provide the desired compounds with high selectivity.
Halogen-Exchange Fluorination of Primary Alkyl Halides Using 1B Metal Fluorides-Pyridine Derivatives
Authors: Yoneda Norihiko , Fukuhara Tsuyoshi , Yamagishi Ken , Suzuki Akira 
Published: July 2006

Abstract
Deep purplish red semicrystaline precipitates were obtained by the treatment of Cu2O with HF. After calcination at 100 °C or higher temperature, this compound was successfully used as a highly effective halogen-exchange fluorination reagent for primary alkyl halides in the presence of pyridine derivatives. AgF and a mixture of CuF2 with copper powder also exhibited high activity in the reaction.
13C-Nuclear Magnetic Resonance Study of Low-Spin Iron(III) Protoporphyrin IX Dicyano Complex. Individual Hyperfine Shifted 13C Resonance Assignments
Authors: Yamamoto Yasuhiko , Fujii Naoyuki 
Published: July 2006

Abstract
1H-13C COSY spectra of the low-spin iron(III) protoporphyrin IX dicyano complex heve lead to the assignments of the individual hyperfine shifted 13C resonances which permit a direct comparison of the hyperfine shifts between 13C and attached 1H resonances. Parallel and anti-parallel relationships between 13C and attached 1H shifts for the heme methyl and meso resonances, respectively, resulted from the different mechanisms operating on the unpaired spin delocalization have been clearly observed.
Belousov–Zhabotinskii Oscillating Reaction without Strong Acid Such as Sulfuric Acid
Authors: Tsukada Masao 
Published: July 2006

Abstract
We have found the existence of oscillatory phenomena in the metal ion catalyzed reaction between malonic acid and potassium bromate without strong acid such as sulfuric acid. In the Ce3+, or Mn2+ catalyst system, the pH oscillations have been observed.
ESR Study on the Regularity of the LB Films of Amphiphilic TCNQ Salts
Authors: Fujita Shigeru , Suga Kosaku , Fujihira Masamichi , Nakamura Takayoshi , Kawabata Yasujiro 
Published: July 2006

Abstract
The ESR spectra of the LB films of N-docosyl- and N-octadecylpyridinium-(TCNQ)n (n=1,2) deposited on glass capillaries or glass slides were measured. The intensity of the ESR spectrum increased markedly with the number of layers. From this and other results, it was suggested that the ordering of the LB film was enhanced by cumulation of monolayers. The ESR spectrum of the LB film deposited on a glass slide showed marked dependence on the orientation of the film in the static magnetic field.
Photoreactivity of 1-Pyrenylmethyl Esters. Dependence on the Structure of the Carboxylic Acid Moieties and the Nature of the Excited States
Authors: Iwamura Michiko , Tokuda Kazuko , Koga Noboru , Iwamura Hiizu 
Published: July 2006

Abstract
While the photolysis of 1-pyrenylmethyl phenylacetates in methanol gave the original phenylacetic acids, irradiation of the 1-naphthoate and 9-anthracenecarboxylate leads to the formation of the intramolecular exciplexes that are inert to the photolysis. The Φf and τf values of these esters have been determined.
Enaminone Intermediate in the One-Methylene Incorporated Dimerization Reaction of Ketone Enolate. Cross Reaction to Unsymmetrical 1,5-Diketones
Authors: Kiyooka Syun-ichi , Yamashita Tsuneo 
Published: July 2006

Abstract
An enaminone has been isolated as an intermediate from the one-methylene incorporated dimerization reaction of ketone enolate using N-phenyl-N-methylformamide. The reaction of the enaminone with the other ketone enolates gives unsymmetrical 1,5-diketones in good yields.
Self-Sustained Nonlinear Oscillation of Hydrogen Ions in the Polyelectrolyte Gels
Authors: Umezawa Kayo , Osada Yoshihito 
Published: July 2006

Abstract
Long-term, self-sustained oscillations of hydrogen ions were detected in the water-swollen polyelectrolyte gels when an electric potential was applied for certain period of time and then turned off. A hypothetical nonlinear ion transport mechanism was proposed.
Meerwein-Ponndorf-Verley Reduction of Ketones and Aldehydes Catalyzed by Lanthanide Tri-2-propoxides
Authors: Okano Tamon , Matsuoka Masahiro , Konishi Hisatoshi , Kiji Jitsuo 
Published: July 2006

Abstract
Lanthanide tri-2-propoxides, Ln(i-PrO)3 (Ln=Nd, Eu, Gd, Dy, Er, Tm, Yb), are very efficient for the catalytic Meerwein-Ponndorf-Verley reduction. The catalytic activity of Gd(i-PrO)3 is about 103 times as high as that of Al(i-PrO)3. Compared with Gd(i-PrO)3, Yb(i-PrO)3 is less active for the reduction of ketones but is efficient for that of aldehydes.
The First Molecular Superconductor Based on π-Acceptor Molecules and Closed-Shell Cations, [(CH3)4N][Ni(dmit)2]2, Low-Temperature X-Ray Studies and Superconducting Transition
Authors: Kobayashi Akiko , Kim Hyernjoo , Sasaki Yukiyoshi , Kato Reizo , Kobayashi Hayao , Moriyama Shinji , Nishio Yutaka , Kajita Koji , Sasaki Wataru 
Published: July 2006

Abstract
Low-temperature structural study of [(CH3)4N][Ni(dmit)2]2 suggested that the rotational freedom of methyl group seems to play an important role in the “metal-semimetal” transition. Superconducting transition was observed at 5 K (7 kbar).
A New Route to (−)-Aristeromycin and (−)-Neplanocin A via the Asymmetric Diels–Alder Cycloaddition
Authors: Arai Yoshitsugu , Hayashi Yoshikazu , Yamamoto Masatoshi , Takayama Hiromitsu , Koizumi Toru 
Published: July 2006

Abstract
An enantioselective synthesis of a central intermediate in the synthesis of (−)-aristeromycin and (−)-neplanocin A via the asymmetric Diels–Alder reaction of menthyl (S)s-3-(2-pyridylsulfinyl)propenoate with cyclopentadiene, is described.
Spin-trapping of Phosphorous-containing Inorganic Radicals by a Water-soluble Spin-trap, 3,5-Dibromo-4-nitrosobenzenesulfonate
Authors: Ozawa Toshihiko , Hanaki Akira 
Published: July 2006

Abstract
Two short-lived phosphorous-containing inorganic radicals (PO32\ewdot and HPO2\ewdot), which are generated by the oxidation with Ti3+-H2O2 react system, are easily trapped by a water-soluble spin-trap, 3,5-dibromo-4-nitrosobenzenesulfonate (DBNBS) and their adducts are characterized by ESR spectroscopy.
The Active Species of Sb–Mo–O Catalyst for the Oxidative Esterification of Ethanol
Authors: Wang Lianchi , Tsuda Masashi , Eguchi Koichi , Arai Hiromichi , Seiyama Tetsuro 
Published: July 2006

Abstract
The freshly prepared catalyst of Sb–Mo–O system was only a mixture of MoO3 and Sb2O4, which was not selective for the ester formation. However, in the course of the oxidation of ethanol, some reduced phases such as Sb4Mo10O31 were formed in the catalyst, accompanied with an increase of ester formation. It is suggested that the reduced phases were effective for the ester formation.
Polarized Laser Induced Fluorescence of N2+(X2Σg+) Produced in the Electron Impact Ionization of N2
Authors: Nagata Takashi , Nakajima Atsushi , Kondow Tamotsu , Kuchitsu Kozo 
Published: July 2006

Abstract
When nitrogen molecule was ionized in collision with electrons of 80–300 eV, the angular distribution of the rotation vector of N2+(X2Σg+) was found to be slightly anisotropic with respect to the direction of the electron beam in the vicinity of 80 eV. This anisotropy indicates that the ejection of a πu electron is the dominant channel in the ionization process in this energy range.
Determination of Rates of Dissociation of an Olefin Ligand in an Olefin–Platinum Complex by Dynamic NMR Spectroscopy
Authors: Toyota Shinji , Oki Michinori 
Published: July 2006

Abstract
The double-doublet signal due to isopropyl-methyl protons in trans-dichloro(4-methyl-1-pentene)(4-methoxycarbonylpyridine 1-oxide)platinum(II) shows the change in line shapes at high temperatures in its 1H NMR spectra, owing to the racemization process, which involves the dissociation of the olefin. The activation parameters were obtained for CDBr3 solutions as follows: ΔH‡ 17.6±0.5 kcal mol−1, ΔS‡ −2.7±1.3 cal mol−1 K−1. Incidentally, this is the first observation of the racemization of an olefin-metal complex by the dynamic NMR method.
Asymmetric Transformation of Dl-4-Thiazolidinecarboxylic Acid
Authors: Shiraiwa Tadashi , Kataoka Kazuo , Kurokawa Hidemoto 
Published: July 2006

Abstract
A mixture of Dl-4-thiazolidinecarboxylic acid (Dl-THC), (+)- or (−)-tartaric acid ((+)- or (−)-TA), and salicylaldehyde in acetic acid was stirred at 80 °C to give a salt composed of equimolar amounts of l-THC and (−)-TA or that of D-THC and (+)-TA. d- and l-THC with optical purity of 97–99% were obtained from these salts in 68–78% yield.
Regiospecific Formations of Thieno[3,2-a]indolizine and Thieno[2,3-b]indolizine Derivatives
Authors: Kakehi Akikazu , Ito Suketaka , Matsumoto Shin-ichi , Morimoto Yuichiro 
Published: July 2006

Abstract
The alkaline treatment of ethyl l-cyano-2-(ethoxycarbonylmethylthio)indolizine-3-carboxylates and diethyl 2-(ethoxycarbonylmethylthio)indolizine-1,3-dicarboxylates afforded the corresponding diethyl 1-aminothieno[3,2-a]indolizine-2,4-dicarboxylates and diethyl 3-hydroxythieno[2,3-b]indolizine-2,9-dicarboxylates in good yields.
Chemically Reactive Liposomes as a New Type of Sensor for Proteins
Authors: Matsumura Hideo , Aizawa Masayuki , Yokoyama Hiroshi , Kamei Hirotake 
Published: July 2006

Abstract
A new type of sensor for proteins has been developed by utilizing a liposome which contains molecules chemically reactive with protein on the membrane surface of the liposome. The covalently bound aggregation of proteins with liposomes has been observed by a quasi-elastic light scattering measurement at the concentration down to about 10−8 mol dm−3
Crystalline Inclusion Compounds of 2,2′-Dihydroxy-1,1′-binaphthyl with Alkali Metal Hydroxides and Ammonia
Authors: Toda Fumio , Tanaka Koichi , Wong Man Chaun , Mak Thomas C W 
Published: July 2006

Abstract
2,2′-Dihydroxy-1,1′-binaphthyl, C20H14O2 from crystalline inclusion compounds of stoichiometries 1\frac12C20H14O2·3MOH·8H2O (M = Li,Na,K), C20H14O2·CsOH·6H2O, and 2C20H14O2·2NH3·CH3OH. In the crystal structure of the NH3 complex, the three molecular components are interlinked by hydrogen bonds to form a column with a hydrophilic stem and a hydrophobic sheath.
A Columnar Cholesteric Liquid Crystal Based on Phthalocyanine Core
Authors: Cho Iwhan , Lim Youngsoo 
Published: July 2006

Abstract
A new columnar cholesterogen based on the octasubstituted phthalocyanine(PcH2), (+)-2,3,9,10,16,17,23,24-octakis[4-(dodecyloxy)-2-oxa-pentyl ]-phthalocyanine (1), is described. The chiral PcH2 1 exhibited classical cholesteric textures in which the transition of platelet to fan-shaped texture was observed (K\xrightarrow23°CM\xrightarrow158°CI). This is the first instance of columnar cholesterogen observed with disc-like liquid crystal systems.
Conformational Effects in High Resolution Solid State CP/MAS 13C NMR Spectra of Thermotropic Ester Compound, 4′-Cyanophenyl-4-n-pentoxybenzoate
Authors: Uryu Toshiyuki , Kato Takashi 
Published: July 2006

Abstract
The crystalline solid state structure of thermotropic ester compound, 4′-cyanophenyl-4-n-pentoxybenzoate (CPPOB) was examined by high resolution solid state CP/MAS (Cross Polarization/Magic Angle Spinning) 13C NMR. Conformational effects were revealed by line splittings in the solid state spectra.
The Michael Reaction of Various Quinones with Silyl Enol Ethers. A Facile Method for the Preparation of Benzofuran and Indole Derivatives
Authors: Mukaiyama Teruaki , Sagawa Yukihiro , Kobayashi Shu 
Published: July 2006

Abstract
In the presence of a catalytic amount of trityl perchlorate, 1,4-benzoquinone, quinone monoimides, or imidoquinones react with silyl enol ethers to produce the corresponding benzofuran or indole derivatives in high yields via the corresponding Michael adducts.
Unexpected Enzymatic N1-Glycosidation of Benzotriazoles as Evidenced by 15N-NMR Spectroscopy
Authors: Tono-oka Shuichi 
Published: July 2006

Abstract
In contrast to N2-glycosidation for indazoles, benzotriazoles were found to undergo a regiospecific N1 -glycosidation in the NADase-catalyzed transglycosidation reaction. The N1-ribosylated structure of benzotriazole dinucleotides obtained was established on the basis of 15N-NMR spectral data.
Complexes of Polythia[n](1,1′)ferrocenophanes with Pd(BF4)2. A Fe–Pd Dative Bond Formation Controlled by the Coordination of the Pd(II) Atom to the Sulfur Atoms of the Thiamacrocycle
Authors: Sato Masaru , Suzuki Kaoru , Akabori Sadatoshi 
Published: July 2006

Abstract
Tetrathia- and trithia[n]ferrocenophanes formed 1:1 complexes with Pd(BF4)2. The spectral data proved the presence of a Fe–Pd bonding interaction for the Pd(II) complexes of 1,5,9-trithia[9]-and 1,4,7-trithia[7](1,1′)ferrocenophanes.
Pentacoordinate Hydridosiliconates with Bidentate Ligands Derived from Hexafluorocumyl Alcohol. Characterization and Reduction of Carbonyl Compounds
Authors: Kira Mitsuo , Sato Kazuhiko , Sakurai Hideki 
Published: July 2006

Abstract
Pentacoordinate hydridosiliconates were prepared via the reaction of trichlorosilane with dilithiated hexafluorocumyl alcohol and characterized spectroscopically. The facile reduction of carbonyl compounds with the siliconates is indicative of the highly activated Si–H bond in the anionic hydridosiliconates.
A General Synthetic Method for α-Methylene Compounds by the Palladium-Catalyzed Decarboxylation-Deacetoxylation of Allyl α-Acetoxymethylcarboxylates Substituted by an Electron-Withdrawing Group at α-position
Authors: Tsuji Jiro , Nisar Mohammad , Minami Ichiro 
Published: July 2006

Abstract
Allyl α-acetoxymethylcarboxylates substituted by ester, amide, nitro, cyano, and sulfonyl groups at α-position undergo smooth palladium-catalyzed decarboxylation-deacetoxylation under mild neutral conditions to afford corresponding α-methylene compounds in high yields.
Long Optical Path Length Thin-Layer Spectroelectrochemistry. Catalytic Oxidation of Hydroquinones by Oxygen at Platinum
Authors: Gui Yupeng , Kuwana Theodore 
Published: July 2006

Abstract
A clean, open-circuited Pt electrode, in the presence of dissolved oxygen, catalyzes the oxidation of hydroquinones in 1 M H2SO4. The oxidation rate is independent of hydroquinone, but dependent upon O2 concentration. If iodine is preadsorbed onto the pt surface, the catalysis is inhibited, although reversible electron transfer to electrolyze the dissolved hydroquinone is not.
Freezing of Equilibrium of 1,2,4-Triazole by Complex Formation with 1,1-Di(2,4-dimethylphenyl)but-2-yn-1-ol, and X-Ray Crystal Structure of the Complex
Authors: Toda Fumio , Tanaka Koichi , Elguero Jose , Nassimbeni Luigi , Niven Margaret 
Published: July 2006

Abstract
Of the two tautomeric isomers of 1,2,4-triazole, 1,2,4-triazacyclopenta-3,5-diene and 1,2,4-triazacyclopenta-2,5-diene, the former was isolated as a 1:1 complex with the title host compound. X-Ray analysis of the complex reveals that the two molecular components are linked by hydrogen bonds with the triazole molecules lying in channels running parallel to the b axis, cutting a near O and c near 1/4.
Binuclear Copper (II) Complexes of Aminopolycarboxylic Acids with an Alcoholic OH Group in the Alkyl Chain Linkage. Model Complexes for Type 3 Copper with Respect to Bridging Ligands
Authors: Kawata Satoshi , Iwaizumi Masamoto , Kosugi Hiroshi , Yokoi Hiroshi 
Published: July 2006

Abstract
It has been revealed by potentiometry and ESR spectroscopy that the binuclear copper (II) complexes of 2-hydroxy-1,3-diaminopropane-, 2-hydroxy-1,4-diaminobutane-, and 3-hydroxy-1,5-diaminopentane-N,N,N′,N′-tetraacetic acids deprotonate the alcoholic OH groups at pH &lt; 6 to form μ-alkoxo bridges. Especially the last complex has been found to form a μ-alkoxo and μ-hydroxo double bridging complex at a step at pH 5.8.