bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of Mixed-Valence State in Halogen-Bridged Mixed-Valence Platinum(II,IV) Complexes by Temperature Dependence of Intervalence Charge-Transfer Spectra
Authors: Matsushita Nobuyuki , Kojima Norimichi , Ban Toshiro , Tsujikawa Ikuji 
Published: July 2006

Abstract
The low-energy absorption edge due to the intervalence charge-transfer (IVCT) transition from PtII to PtIV has been investigated at 4.2 K and room temperature in single crystals of [Pt(en)2][PtBr2(en)2]Y4 {Y=ClO4(PBC), HSO4(PBHS)}, [Pt(en)2][PtI2(en)2](HSO4)4·4H2O (PIHS) and [Pt(en)2][PtX2(en)2](SO4)2·6H2O {X=Cl(PCSW), Br(PBSW), I(PISW)}. The IVCT absorption edges in PCSW, PBSW, and PISW shifted to the lower-energy side (i.e. red shift), while those in PBC, PBHS, and PIHS shifted to the higher-energy side (i.e. blue shift) with an increase in temperature. We consider that the thermal effect of the valence fluctuation of the Pt mixed-valence state causes a red shift of the IVCT absorption edge and that the thermal effect of the hydrogen bond between the PtII complex ion and the PtIV complex ion causes a blue shift of the IVCT absorption edge. These two effects coexist and compete with each other in one complex. The dominant effect of the two effects determines the direction of the shift of the IVCT absorption edge, namely, the temperature dependence of the Pt mixed-valence state.
In-Situ X-Ray Diffraction Study of Metal Hydride Formation in Palladium and Palladium-Based Alloy Electrodes under Cathodic Hydrogen Charging
Authors: Machida Ken-ichi , Enyo Michio 
Published: July 2006

Abstract
An in situ X-ray diffraction (XRD) technique reported earlier was improved and employed to study the hydride formation in Pd and Pd–Au alloy foils and amorphous Pd–Zr alloy ribbons during cathodic hydrogen charging or its reverse process. The phase transformation from α- to β-PdHx in the Pd electrode, accompanied by an increase in the cell volume, was demonstrated to take place by the formation of a β phase domain in the bulk during the cathodization. The lattice constant was discontinuously changed from a\simeq3.92 to 4.04 Å and such a discontinuous change was observed on the Pd90Au10 alloy as well. However, no phase transformation was observed on the Pd–Au alloys with the Pd content of 70 at.% or below, where the lattice constant increased continuously with an increase in the negative potential for the cathodic polarization. No crystallization in the amorphous Pd–Zr alloy ribbon electrodes was detected after hydrogen charging.
Preparation of Crystalline LiNbxTa1−xO3(0≤x≤1) Films from Metal Alkoxide Solutions
Authors: Hirano Shin-ichi , Kato Kazumi 
Published: July 2006

Abstract
Crystalline LiNbxTa1−xO3(0≤x≤1 films were prepared from complex alkoxide solutions, controlling the ratio of Nb to Ta by means of a dip-coating method. The present work revealed the dependence of the film thickness on the concentration of the solution and the speed of the withdrawal of the substrate from the solution, the effects of water on the crystallization of the films, and the effects of the structures of the substrates on the crystallinity of the prepared films.
Hydrogenation of Carbon Monoxide, Aldehydes, and Unsaturated Hydrocarbons on Titania-Supported Palladium Catalysts
Authors: Wu Jihong , Funakoshi Masaki , Nagamoto Hidetoshi , Komiyama Hiroshi , Inoue Hakuai 
Published: July 2006

Abstract
Pd/TiO2 catalysts prepared by different methods showed quite different catalytic activities in the hydrogenation of CO and other unsaturated compounds. The catalyst prepared by coprecipitation of Pd acetate and titanium tetraisopropoxide contained smaller Pd particles than those in catalysts prepared by impregnation methods. In the hydrogenation of CO, activities of the catalysts increased with increase in the Pd dispersion. The coprecipitated catalyst was much more active for this reaction than the other catalysts and showed high activity for methanol formation under normal pressure. In the hydrogenation of propionaldehyde to 1-propanol, the catalysts showed similar behavior to that in the CO/H2 reaction. However, in hydrogenation of C=C double bonds, the activity order of the catalysts was reverse. Higher activity was obtained on the impregnated catalysts with larger Pd particle size and this trend was stronger in hydrogenation of the conjugated butadiene and C=C bond in acrylaldehyde than in the hydrogenation of ethvlene.
The Formation and Stereochemistry of [CoIII3(l-cys-N,S)n(aet)6−n]3−n Type S-Bridged Complexes (n=0–6, l-cys=l-cysteinate, and aet=2-aminoethanethiolate)
Authors: Konno Takumi , Aizawa Sen-ichi , Hidaka Jinsai 
Published: July 2006

Abstract
Three kinds of S-bridged trinuclear complexes, ΔLLLΔLLL-[Co3(l-cys-N,S)6]3−, ΔLLLΔ- and ΔLLLΛ-[Co3(l-cys-N,S)3(aet)3]0, and [Co3(aet)6]3+, were formed by the reaction of a mixture of ΔLLL-fac-[Co(l-cys-N,S)3]3− (l-cys=l-cysteinate) and fac-[Co(aet)3] (aet=2-aminoethanethiolate) with [CoCl(NH3)5]2+. The reaction with an excess amount of Co2+ led to the formation of seven kinds of S-bridged complexes, [Co3(l-cys-N,S)n(aet)6−n]3−n](n=0–6).
The Effect of pH and Counter Ion of Oxalate Ion on Photoreduction of Methylviologen
Authors: Tagaya Hideyuki , Saito Hiroaki , Suda Susumu , Chiba Koji 
Published: July 2006

Abstract
A higher formation of the methylviologen radical cation was observed at higher pH and when the counter ion of an oxalate ion was large in the continuous photolysis of deaerated solutions of methylviologen (MV2+)–oxalate ion (C2O42−). A dissociation of oxalic acid to the ion depended upon the pH at pH&lt;7 and the dissociation constant of a MV2+–C2O42− complex depended on the pH at pH&gt;10. The calculated absorbance of the MV2+–C2O42− complex at 350 nm, by using the dissociation constants of oxalic acid and the complex, agreed well with the observed absorbance. It was considered that the pH depedence of the MV\underset.+ formation resulted from the pH dependence of the concentration of the MV2+–C2O42− complex. The effect of a counter ion on the photoinduced electron transfer was explained in terms of the difference in the stability of the complex ion, in which smaller ions (Li+, Na+) tended to form more stable complexes than larger ions (NH4+, K+).
The Electron Donor–Acceptor Interaction between Mixed Solvents and Its Influence on Their β-Sheet Structure-Disrupting Potential
Authors: Narita Mitsuaki , Umeyama Hiroshi , Isokawa Shizuko , Honda Shinya , Sasaki Chie , Kakei Hideaki 
Published: July 2006

Abstract
Cross-linked polystyrene resin-bound peptides were useful for the investigation of the β-sheet structure-disrupting potential of mixed solvents although their β-sheet structure-disrupted behavior by mixed solvents was different from that of peptides free from a macromolecular protecting group due to the concentrating efficacy of a cross-linked resin. In mixed solvents, the electron-acceptor and -donor numbers (AN and DN) of organic solvents were one of the most important factors to estimate their β-sheet structure-disrupting potential. In a mixture of electron-acceptor solvents themselves or -donor solvents, the electron donor-acceptor interaction between solvents did not occur and electron-accepting or -donating property of each solvent was kept to disrupt the β-sheet aggregation in mixed solvents. On the other hand, in a mixture of electron-acceptor solvent and -donor solvent, the electron donor-acceptor interaction between solvents occurred predominantly to decrease the β-sheet structure-disrupting potential of mixed solvents. The present results clarify the criteria of the search for effective solvents in peptide and protein synthesis.
Synthesis of Pyranoisoflavones from Pyronochalcones: Synthesis of Elongatin and Its Angular Isomer
Authors: Tsukayama Masao , Kawamura Yasuhiko , Tamaki Hiroto , Kubo Tomoya , Horie Tokunaru 
Published: July 2006

Abstract
Elongatin (4′,5-dihydroxy-2′,5′-dimethoxy-2″,2″-dimethylpyrano[5″,6″-g]isoflavone) was synthesized by an oxidative rearrangement of the corresponding pyronochalcone [6-(1-oxo-3-phenyl-2-propenyl)-4-chromanone] with thallium(III) nitrate and a regioselective reduction of 7-(4-benzoyloxy-2,5-dimethoxyphenyl)-2,3-dihydro-2,2-dimethyl-5-tosyloxy-4H,6H-benzo[1,2-b:5,4-b′]dipyran-4,6-dione with sodium boronydride–palladium chloride, followed by dehydration of the resultant alcohol and hydrolysis. Its angular isomer (4′,5-dihydroxy-2′,5′-dimethoxy-2″,2″-dimethylpyrano[6″,5″-h]isoflavone) was also synthesized from the corresponding pyronochalcone in a similar manner.
Preparation of Bismuth Sulfide Thin Films by Solution Pyrolysis of Bismuth Dithiocarbamate Complexes
Authors: Nomura Ryoki , Kanaya Kouichi , Matsuda Haruo 
Published: July 2006

Abstract
Solution pyrolysis of Bi(S2CNRR′)3 in p-xylene or chloroform on a glass substrate at 350 °C under Ar atmosphere gave polycrystalline and low resistive (102 Ω cm in dark) bismuth sulfide thin films which showed large photoelectric effect.
Low-Temperature Coal Liquefaction in Basic Nitrogen Compounds
Authors: Tagaya Hideyuki , Saito Akira , Chiba Koji 
Published: July 2006

Abstract
A high conversion (75%) of Taiheiyo coal was attained using indole at 300 °C. Morpholine and tetrahydroquinoline were also effective solvents although quinoline, aniline, and triethylamine were not effective as well as tetralin and 1-methylnaphthalene. Extraordinarily high SRC yields and their molecular weight distributions suggested the presence of a solvent dimer and hydrogen donation.
ELECTROPHILIC ADDITION TO BICYCLO[6.1.0]NONATRIENE
Authors: Sasaki Tadashi , Kanematsu Ken , Yukimoto Yusuke 
Published: July 2006

Abstract
Reaction of cis-bicyclo[6.1.0]nonatriene with an IN3 solution, a mixture of iodine azide and sodium azide, gave a cis-bisazide in quantitative yield. The mechanism of the reaction is discussed on the bishomotropylium cation or cyclopentadienyl cation intermediate proposed.
AN OXIDATION REACTION OF Cl3Sn–Mn(CO)5 WITH KMnO4
Authors: Onaka Satoru 
Published: July 2006

Abstract
A reaction of Cl3Sn–Mn(CO)5 with KMnO4 in a mixed solvent afforded ClMn(CO)5 and a tin–hydroxo compound. The manganese atom in Cl3Sn–Mn(CO)5 is oxidized mildly from 0 to +1 in oxidation number by KMnO4.
MOLECULAR STRUCTURE DETERMINATION OF 4-BROMOBENZOPHENONE 2,4-DINITROPHENYLHYDRAZONE BY X-RAY ANALYSIS
Authors: Tabata Masayoshi , Takada Yoshiyuki , Suzuki Akira , Furusaki Akio 
Published: July 2006

Abstract
The molecular structure of 4-bromobenzophenone 2,4-dinitrophenylhydrazone was determined by X-ray analysis.
THE ABSOLUTE CONFIGURATION OF THE (−)589-ACETYLACETONATO BIS(TRIMETHYLENEDIAMINE)COBALT(III) ION
Authors: Kawaguchi Hiroshi , Matsumoto Keiji , Kuroya Hisao , Kawaguchi Shinichi 
Published: July 2006

Abstract
The crystal structure of (−)589-[Co acac tn2] [As-(+)-tart]2 H2O has been determined by the X-ray method. The absolute configuration of the complex cation can be nenoted as Δ. A simple empirical rule, proposed by Mason et al., relating the sign of the Cotton effect of a particular electronic transition to the absolute configuration of the metal complex seems to hold in this case.
A NOVEL ETHER FORMATION REACTION VIA CHLOROACETYLHYDRAZONES
Authors: Ito Suketaka 
Published: July 2006

Abstract
Chloroacetylhydrazones were allowed to react with sodium alkoxide in alcohol to give acetic ester of the alcohol and unsymmetrical ethers derived from the alkoxide and the alkylidene moiety of the hydrazones. Secondary and tertiary alkoxides failed to afford any amount of ethers. High yields of ethers were realized especially in the reaction of cyclohexanone chloroacetylhydrazone.
REDUCTIVE DECOMPOSITION OF NITRIC OXIDE BY BIS(SALICYLALDEHYDE)ETHYLENEDIIMINO MANGANESE(II) AND FORMATION OF AN OXYGENATED MANGANESE COMPLEX
Authors: Tamaki Motonori , Masuda Isao , Shinra Koichiro 
Published: July 2006

Abstract
By the reaction of MnII(Salen) (Salen: bis(salicylaldehyde)ethylenediiminato dianion) with NO in DMSO, NO is reductively decomposed to give N2O and N2, and a new oxygenated manganese complex (Mn-O(Salen)]2O2 is formed. The complex shows IR absorption bands at 623 and 640 cm−1 attributed to νMn-O, and at 884 cm−1 attributed to νMn-O, indicating both oxo- and μ-peroxo-bonding in the complex.
DEPROTONATION OF p-HYDROXYBENZOPHENONE AS A CAUSE OF THE SUPPRESSION OF THE PHOTOREDUCTION IN ALCOHOLS
Authors: Hoshino Mikio , Koizumi Masao 
Published: July 2006

Abstract
The spectral change of p-hydroxybenzophenone (HOBP) and the relative quantum yields of its photoreduction in ethanol-cyclohexane of various composition have been studied. The results have demonstrated that the hydrogen-bonded species of HOBP with ethanol does not undergo the deprotonation upon excitation at low [C2H5OH] and accordingly is photoreduced effectively, and that the proton transfer which occurs upon excitation requires the participation of several ethanol molecules.
UV SPECTRA OF HYDRAZIDES
Authors: Mashima Mitsuo , Ikeda Fujiko 
Published: July 2006

Abstract
UV absorption spectra of the hydrazides containing the CONHNH2 group and their hydrochlorides were obtained. Most of hydrazides studied, in water, show one band with the maximum at about 53 kK. On this band the solvent effects and the substitution effects were examined.
1,14-DIMETHYL-5,10-DIPHENYL- AND 1,5,10,14-TETRA-tert-BUTYL-6,8,15,17-tetradehydro[18]annulenes
Authors: Katakami Tsutomu , Tomita Sachiyo , Fukui Kunisuke , Nakagawa Masazumi 
Published: July 2006

Abstract
1,14-Dimethyl-5,10-diphenyl- and 1,5,10,14-tetra-tert-butyl-6,8,15,17-tetradehydro[18]annulenes have been synthesized, and their aromatic nature was demonstrated by the NMR spectra. The tetra-tert-butyltetradehydro[18]annulene was found to be more stable and soluble than the other tetrasubstituted analogues.
A CONVENIENT METHOD FOR THE SYNTHESIS OF CYCLOPENTENONES
Authors: Mukaiyama Teruaki , Kobayashi Susumu , Kamio Kunimasa , Takei Hisashi 
Published: July 2006

Abstract
A general and convenient route for the synthesis of cyclopentenone derivatives starting from readily available cyclopentanone via intermediates, 2,2-bis(phenylthio)cyclopentanone, 1, and 2,2-bis(phenylthio)cyclopentanol, 2, was described. Further, it was shown that the hydrolysis of various thioketals was successfully achieved by the use of silver perchlorate.
THERMOCHROMISMS OF SOME β-DIKETONE CHELATE COMPLEXES OF COPPER(II) IN PURE PYRIDINE
Authors: Yokoi Hiroshi , Sai Mitsuru , Isobe Taro 
Published: July 2006

Abstract
Two types of thermochromisms have been found for several β-diketone chelate complexes of copper(II) in pure pyridine. One is observed for such complexes as bis(acetylacetonato)copper(II), where the visible absorption spectra at various temperatures have well-defined isosbestic points. The other is observed for such complexes as bis(salicylaldehydato)copper(II), where only the spectral intensity increases unusually with a rise in temperature.
EXCEPTIONAL HINDERED INTERNAL ROTATION OF THE ALKYL GROUP IN THE 4,4′-DI-N-PROPYL BIPHENYL ANION
Authors: Nemoto Fujito , Ishizu Kazuhiko , Hasegawa Hideo 
Published: July 2006

Abstract
The ESR spectra of the 4,4′-di-n-propyl biphenyl anion have been observed in either DME or DMF with reduction by potassium. The experimental evidence suggests that an anomalous restricted rotation of the alkyl group takes place in the 4,4′-di-n-propyl biphenyl anion, where the alkyl-β-protons exhibit the nonequivalent splittings in a solution.
VAPOUR PHASE OXIDATION OF BUTADIENE OVER SUPPORTED MOLYBDENA CATALYSTS
Authors: Akimoto Masamichi , Echigoya Etsuro 
Published: July 2006

Abstract
Reactivity of Mo5+ with oxygen which is formed in supported molybdena catalysts was investigated by ESR spectroscopy and discussed as a carrier effect with reference to the selectivity in maleic anhydride formation during vapour phase oxidation of butadiene. Mo5+ formed on SiO2 and TiO2, showed good selectivity and appeared to be the active site for the production of maleic anhydride.
TRITERPENOID BIOSYNTHESIS. THE STEREOSPECIFICITY IN THE ENZYMATIC CYCLIZATION OF SQUALENE TO β-AMYRIN
Authors: Suga Takayuki , Shishibori Tsuyoshi , Kimoto Sanae 
Published: July 2006

Abstract
It was first proved that the 20α-methyl group, as well as the 4β-, 8-, 10-, 14-, and 17-methyls of β-amyrin biosynthesized from [6-D3-mevalonic acid in Pisum sativum are stereospecifically derived from the 3-methyl group of the acid. The result has substantiated the stereospecificity in the enzymatic cyclization of squalene to β-amyrin.
THE SYNTHESES OF RIPARIOCHROMENE A AND METHYL-RIPARIOCHROMENE A
Authors: Nakayama Mitsuru , Hayashi Shûichi , Tsukayama Masao , Horie Tokunaru , Masumura Mitsuo 
Published: July 2006

Abstract
7,8-Dimethoxy-2,2-dimethylchroman was obtained from pyrogallol trimethyl ether and β, β-dimethylacrylyl chloride via the corresponding chroman-4-one. The Friedel–Crafts reaction of the chroman with acetyl chloride yielded 6-acetyl-7-hydroxy-8-methoxy-2,2-dimethylchroman. The dehydrogenation of the acetylchroman with DDQ in anhydrous benzene afforded ripariochromene A.
THE SYNTHESIS OF (±)-ROYLEANONE
Authors: Matsumoto Takashi , Tachibana Yakudo , Fukui Kenji 
Published: July 2006

Abstract
(±)-Royleanone (I) has been synthesized from 5,7,8-trimethoxy-1-tetralone (III) via (±)-11,12,14-trimethoxypodocarpa-8,11,13-triene (XIII). The synthetic (±)-I was shown to be identical with natural royleanone by their spectral comparisons.
SUBSTITUTION REACTION OF THE COPPER(II) COMPLEXES WITH 2,2′-BIPYRIDINE AND WITH PYRIDINE BY THE BASIC SITES ON THE CALCIUM OXIDE SURFACE
Authors: Takimoto Kazuto , Kadota Katsuhide , Miura Masaji 
Published: July 2006

Abstract
A substitution reaction of the copper(II) complexes quite different from those in the basic solutions and on the silica-alumina surface was found on the calcium oxide surface. The reaction is due to the highly basic site, O2− ion on the surface.
STRUCTURES AND SYNTHESES OF HYPOLEPIN A, B AND C, SESQUITERPENES FROM HYPOLEPIS PUNCTATA METT.
Authors: Hayashi Yuji , Nishizawa Mugio , Harita Shigeyuki , Sakan Takeo 
Published: July 2006

Abstract
Three sesquiterpenoid constituents were isolated from leaves of Hypolepis punctata Mett. and their structures, I, II and III, were established by the synthesis.
PHOTOCHEMISTRY OF FUKINONE AND PULEGONE
Authors: Kawai Masao , Naya Keizo 
Published: July 2006

Abstract
Fukinone (I), a sesquiterpenic ketone containing a conjugated double bond in cisoid form, on photolysis in methanol solution gave methyl ester (III), stereoisomeric cyclobutanols (IVa and Va), and methyl ether (VI). Photolysis of pulegone (II), a monoterpenic analogue of I, afforded quite similar results.
AROMATIC SUBSTITUTION WITH ARENESULFONYLOXY FREE RADICAL
Authors: Kobayashi Michio , Sekiguchi Masatsugu , Minato Hiroshi 
Published: July 2006

Abstract
m-Nitrobenzenesulfonyl peroxide has been photolyzed in nitrobenzene and benzonitrile. On the basis of the product analyses, the reactivity of the sulfonyloxy radical is discussed.
STUDIES ON PHOTO-POLAROGRAPHY. VII. PHOTO-CURRENT OF DIMETHYLSULFOXIDE AND FORMATION OF METHYLSULFYNYLCARBONIUM ANION AT IRRADIATED DROPPING MERCURY ELECTRODE
Authors: Imai Hideo , Yamashita Kazuo 
Published: July 2006

Abstract
The photo-current produced at a dropping mercury electrode irradiated by ultra-violet light in the dimethylsulfoxide (DMSO) solution was investigated. The formation of methylsulfynylcarbonium anion by the reaction of DMSO with the solvated electron was confirmed indirectly from the influence of ethanol as the H radical scavenger on the photo-current.
A NEW COMPLEX OF URANIUM(IV) WITH GLYCINE
Authors: Yoshimura Tetsuhiko , Miyake Chie , Imoto Shosuke 
Published: July 2006

Abstract
Anew complex with the formula [U(C2NO2H4)2(H2O)2]Cl·2H2O was synthesized and confirmed by thermogravimetric analysis and infrared spectrum. From room temperature to 80°K, magnetic susceptibility obeys the Curie–Weiss law, suggesting that the dominating tetragonal distortion makes an energy difference between the ground state A and the lowest excited state E sufficiently small.
SEVERAL REACTIONS OF POLYHALOGENOPHENYLTRIMETHYLSILANES IN THE PRESENCE OF FLUORIDE ION
Authors: Ishikawa Nobuo , Isobe Ken-ichi 
Published: July 2006

Abstract
Polyhalogenophenyltrimethylsilanes such as 3,5-dichloro-2,4,6-trifluoro-, 3-chloro-2,4,5,6-tetrafluoro-, 2,6-difluoro-, and 2,6-dichlorophenyltrimethylsilanes in KF/DMF-system underwent Grignard-like reactions with benzaldehyde or iodine. In these reactions the silicon complex coordinated with fluoride ion was assumed to be the reaction intermediate.
FORMATION OF 3-METHYLISOINDOLENINE-1-CARBOXYLIC ACID
Authors: Kotake Hiroshi , Kinoshita Hideki , Miyashita Setsuo 
Published: July 2006

Abstract
It was found that 3-methylisoindolenine-1-carboxylic acid(III) was obtained by heating o-acetylphenylacetic acid with hydroxylamine. This compound was also obtained by the reaction of o-acetylphenylacetic acid oxime with hydroxylamine or semicarbazide under similar reaction conditions. From these results a probable process of formation has been suggested.
THE REACTION OF DIPHENYLPHOSPHINE OXIDE WITH ACETIC ANHYDRIDE IN THE PRESENCE OF PYRIDINE
Authors: Inokawa Saburo , Tanaka Yutaka , Yoshida Hiroshi , Ogata Tsuyoshl 
Published: July 2006

Abstract
A new method for the formation of the phosphorus–phosphorus bond was discovered, that is, the reaction of diphenylphosphine oxide and acetic anhydride in the presence of pyridine afforded tetraphenyldiphosphine monoxide in a good yield.
DIMERIZATION OF ETHYLENE ON Rh–Y ZEOLITE
Authors: Yashima Tatsuaki , Ebisawa Mikio , Hara Nobuyoshi 
Published: July 2006

Abstract
It was found that dimerization of ethylene selectively proceeded on Rh–Y zeolite at room temperature. The active site for this dimerization was concluded to be made from zero-valent rhodium which was formed by reduction of rhodium cation in the zeolite framework.
INFRARED ABSORPTION INTENSITIES OF OUT-OF-PLANE CH BENDING VIBRATION BANDS OF SUBSTITUTED BENZENES. V. SOLVENT EFFECT ON THE INTENSITIES OF THE BANDS OF DIPHENYL SULFIDE AND DIPHENYL SULFOXIDE
Authors: Higuchi Seiichiro , Hashimoto Izumi , Tanaka Shigeyuki , Kamada Hitoshi 
Published: July 2006

Abstract
The band intensities of out-of-plane CH bending and ring out-of-plane deformation vibrations of Ph2S and Ph2SO were measured in ten solvents. The results were analyzed in terms of solvent-dependences of C–H bond moment and the angle of rotation θ of benzene rings. Different behaviours of θ were observed between the two molecules.
NEW DOUBLE SALT OF SULFAMIC ACID AND POTASSIUM SULFATE
Authors: Uchida Shogo , Mochizuki Morio 
Published: July 2006

Abstract
Existence of a new double salt, potassium hydrogen sulfate sulfamate (K2SO4·2HSO3NH2) has been confirmed by the measurements of mutual solubilities of HSO3NH2 and K2SO4 in water at 30°C. [Fig. 1]
The double salt is a colorless, transparent and almost non-hygroscopic crystal having a composition of HSO3NH2 52.7%, K2SO4 47.3%(2:1 in mole), [Table 1] and melting point of 161∼162°C.
CIRCULAR DICHROISM OF TRANS(N)-(AMMONIATRIACETATO) (β-AMINOCARBOXYLATO) COBALTATE(III) COMPLEXES CONTAINING ONE OR TWO ASYMMETRIC CARBON ATOMS IN A SIX-MEMBERED CHELATE RING
Authors: Koine Norio , Sakota Naokazu , Hidak Jinsai , Shimura Yoichi 
Published: July 2006

Abstract
Three complexes of trans(N)-(ammoniatriacetato)(β-aminocarboxyl-ato)cobaltate(III) containing one or two asymmetric carbon atoms in the β-aminocarboxylato chelate ring were prepared and their circular dichroism spectra were measured. Optical activity of these complexes in the spin-allowed d-d absorption band region mostly arises from the vicinal contributions of the asymmetric carbon atoms.
STEREOCHEMISTRY AND ISOTOPE EFFECT IN THE DEHYDROBROMINATION OF 2-BROMOBUTANE OVER SOLID CATALYSTS
Authors: Misono Makoto , Yoneda Yukio 
Published: July 2006

Abstract
Stereochemistry of dehydrobromination of 2-bromobutane over KOH-silica has been determined from the composition and the deuterium content of each butene obtained from erythro-2-bromobutane-3-d1. Below 250°C anti elimination was the preferred mode and syn elimination above 250°C.