bluuebunny/crossref_metadata_2025_split huggingface dataset:
Kinetics for Micelle-Monomer Association-Dissociation Reaction of Surfactants with Hydrophobic Counterions
Authors: Inoue Tohru , Ikeuchi Masaru , Kuroda Takemi , Shimozawa Ryosuke 
Published: July 2006

Abstract
A pressure-jump technique and a spin label technique were applied to the kinetic investigation of the association-dissociation reactions between monomer and micelle in surfactant solutions of STS, TMTS, TETS, and TPTS. The rate constants for the reactions were determined at several temperatures by the pressure-jump experiment. The ESR spectra of a spin probe, 5-SAL, solubilized in the micelles were analyzed in terms of the rotational correlation time, τc. A linear relationship was found between kd, the dissociation rate constant, and τc−1. This indicates that the dissociation rate depends on the fluidity of the micellar interior, and is in accord with the picture drawn by Aniansson et al. for the dissociation process. A qualitative discussion is presented on the activation parameters estimated from the present results according to the scheme presented by Aniansson et al.
The Electronic Structures of Bis(cis-1,2-dicyano-1,2-ethenedithiolato)nickel Complexes
Authors: Sano Mitsuru , Adachi Hirohiko , Yamatera Hideo 
Published: July 2006

Abstract
The core binding energies of N1s and S2s in cis-1,2-dicyano-1,2-ethanedithiolate (maleonitriledithiolate, mnt) complexes were measured by means of X-ray photoelectron spectroscopy (XPS), and the energy differences between N1s and S2s, ΔE, were found to be 171.7–172.6 eV throughout the complexes studied. The lowest ΔE value, 171.7 eV, was shown by [Ni(mnt)2]−. The electronic structures of [Ni(mnt)2]− and [Ni(mnt)2]2− were calculated by the discrete variational Xα method. The XPS measurements and the molecular orbital (MO) calculations provide consistent results that the oxidation state of the nickel atom is +2 for both nickel mnt complexes and that the highest occupied MO is 5b3g, which is mainly localized on ligands and which holds an unpaired electron in [Ni(mnt)2]−.
A Kinetic Study of the Reactions of Several Cobalt(III) Complexes with Ascorbic Acid
Authors: Tsukahara Keiichi , Yamamoto Yasuo 
Published: July 2006

Abstract
The kinetics of the reactions of [Co(phen)3]3+, [Co(bpy)3]3+, and [Co(en)(phen)2]3+ (phen=1,10-phenanthroline, bpy=2,2′-bipyridine, and en=ethylenediamine) with ascorbic acid (H2A) have been studied over the temperature range from 17.0 to 35.0 °C, at an ionic strength of 0.10 mol dm−3 (LiClO4), and over the pH range from 3.60 to 5.04 (acetate buffer). The [Co(phen)3]3+ and [Co(bpy)3]3+ ions were reduced by both HA− (k1 path) and A2− (k2 path) ions: the second-order rate constants at 25.0 °C are (0.40±0.07) dm3 mol−1 s−1 and (5.8±1.1)×106 dm3 mol−1s−1 for the [Co(phen)3]3+ ion, and (0.13±0.02) dm3 mol−1 s−1 and (2.1±0.5) ×106 dm3 mol−1 s−1 for the [Co(bpy)3]3+ ion. The [Co(en)(phen)2]3+ ion was reduced only by the A2− ion; k2=(1.0±0.2) ×106 dm3 mol−1 s−1 (25.0 °C). The [Co(phen)3]3+, [Co(bpy)3]3+, and [Co(en)(phen)2]3+ ions were not reduced by H2A. The activation parameters (ΔH\eweq and ΔS\eweq) for the ascorbate reduction of the [Co(phen)3]3+ ion were larger than those of the [Co(bpy)3]3+ ion. This is in contrast to the results of the self-exchange reactions of the [Co(phen)3]3+⁄2+ and [Co(bpy)3]3+⁄2+ couples. The mechanisms will be discussed in terms of the activation parameters and the Marcus cross relationships.
The Preparation and Characterization of Dichloromanganese(IV) Schiff Base Complexes
Authors: Matsushita Takayuki , Kono Hiroshi , Shono Toshiyuki 
Published: July 2006

Abstract
Some chloromanganese(III) Schiff base complexes react with hydrogen chloride to give deep green complexes with the empirical formula of MnLCl2 or MnL′2Cl2, where H2L denotes quadridentate ligands such as N,N′-disalicylideneethylenediamine and its analogs, and where HL′ denotes bidentate ligands such as N-butylsalicylideneamine and its analogs. These complexes are nonelectrolytes in acetonitrile. Their magnetic moments at room temperature fall within the range of 3.9 to 4.1 BM, and the magnetic susceptibilities obey the Curie-Weiss law with small θ values over the temperature range of 77 to 300 K, indicating that the oxidation state of the manganese ions in these complexes is +IV. The electronic spectra show an intense band around 16000 cm−1 which can be assigned to a charge-transfer transition. In the cyclic voltammograms, two cathodic waves are observed at half-peak potentials around +0.9 V and −0.2 V(vs. SCE); they can be assigned to the reductions of Mn(IV) to Mn(III) and of Mn(III) to Mn(II) respectively. The probable configurations of the complexes are discussed on the basis of the infrared spectra.
The Correlation between the Bonding Properties of Ligands and the Irradiation Effects of Gamma-rays on Iron Compounds
Authors: Maeda Yonezo , Katsuki Yoshihiro , Morinaga Tooru , Takashima Yoshimasa 
Published: July 2006

Abstract
Various iron compounds have been irradiated with gamma-rays of cobalt-60. The foreign-charge states of the irradiated compounds were confirmed by means of Mössbauer spectroscopy. The results showed that high-spin iron(III) compounds with large conjugated molecules and low-spin iron(II) compounds are insensitive to γ-radiations. However, iron(III) compounds with carboxyl groups or reducing ligands and low-spin iron(III) compounds are sensitive to γ-radiations. Further, FeCl2·4H2O was found to be insensitive to radiation up to a total exposure dose of 109 R, in contrast to other ionic iron(II) compounds.
Bis(cyclohexyl isocyanide)palladium(II) Halides and Their Benzene Complexes
Authors: Kajimoto Tsunesuke , Kitano Yukishige , Takahashi Hidetaka , Tsuji Jiro 
Published: July 2006

Abstract
Bis(cyclohexyl isocyanide)palladium(II) chloride, PdCl2(C6H11NC)2 (1) was prepared from PdCl2. The configuration of the complex 1 is cis with respect to the isocyanides. The isocyano group in one cyclohexyl isocyanide takes axial conformation to chair form cyclohexyl group, while another takes equatorial conformation. By recrystallization of 1 from benzene bis(cyclohexyl isocyanide)palladium(II) chloride-benzene, PdCl2(C6H11NC)2(C6H6)2 (2) was prepared. IR spectrum of 2 shows a characteristic absorption at 700 cm−1 which is due to the benzene incorporated in the complex. Similar benzene complex was also prepared from PdBr2.
Preparation, Resolution, and Absorption and Circular Dichroism Spectra of [Co(en)n{NH2CH2CH2P(CH3)2}3−n]3+ and the Related Complexes, and the Absolute Configuration of (+)589-fac-[Co{NH2CH2CH2P(CH3)2}3]3+ Determined by X-Ray Analysis
Authors: Kinoshita Isamu , Kashiwabara Kazuo , Fujita Junnosuke , Matsumoto Keiji , Ooi Shun’ichiro 
Published: July 2006

Abstract
A series of complexes, [Co(en)n{NH2CH2CH2P(CH3)2}3−n]3+ (en=ethylenediamine, n=0,1,2) and three bis(ethylenediamine)cobalt(III) complexes of the related ligands, NH2CH2CH2P(C6H5)2, (S)-NH2CH(CH3)CH2P(C6H5)2, and rac-NH2CH2CH2P(C4H9)(C6H5) were prepared and resolved (or separated) into optical isomers, and their absorption and circular dichroism spectra were recorded. The molecular structure and the absolute configuration of (+)589-fac-[Co{NH2CH2CH2P(CH3)2}3]Br3·3H2O were determined by X-ray analysis. The crystals are lemon-yellow, orthorhombic, a=26.501(8), b=9.573(4), c=10.081(5) Å, space group P212121, z=4. The Co atom is surrounded by 3P and 3N in the facial manner with the average distances of 2.237 and 2.041 Å, respectively. The absolute configuration of the complex ion is Δ. The chelate rings are puckered and chiral to form a pseudo λ gauche conformation.
The Steric Hindrance of the Stepwise Reaction of N-Carboxy α-Amino Acid Anhydride with the α-Amino Acid Ester
Authors: Oya Masanao , Takahashi Tomoko 
Published: July 2006

Abstract
The mechanisms of the reactions of 4-alkyloxazolidinediones (1) (N-carboxy α-amino acid anhydrides(NCAs)) with α-amino acid benzyl ester p-toluenesulfonates (2) were investigated in acetonitrile containing triethylamine at low and room temperatures. Two types of reactions were observed: (1) the polymerization of NCAs was initiated with a small amount of 2 to produce polypeptides (6), and (2) the dipeptide benzyl esters (4) were produced by the stepwise reaction of NCAs with the esters. Both the polymerization and the dipeptide formation (1+2) seemed to be initiated by the nucleophilic attack of the amino group of the ester on the C-5 carbon of NCAs. The polymerization proceeded when the side chains of the amino acid esters (R2) were more bulky than those of the NCAs (R1). On the contrary, dipeptide esters were produced when the side chains of the NCAs (R1) were more bulky than those of the esters (R2).
The Liquid-phase Oxidation of Methylbenzenes by the Cobalt-Copper-Bromide System
Authors: Okada Toshihiko , Kamiya Yoshio 
Published: July 2006

Abstract
The liquid-phase oxidation of methylbenzenes catalyzed by a catalyst system composed of cobalt(II) and copper(II) acetates and sodium bromide was carried out in acetic acid at 150 °C. The corresponding benzyl acetates and benzaldehydes were obtained in high selectivities in most cases. A nuclear-brominated product, i.e., 3-bromo-4-methoxytoluene was also obtained in the oxidation of p-methoxytoluene, which has two different reaction sites, i.e., o-positions to the electron-donating methoxyl substituent and the benzyl position. However, the substitution of the bromide ion for the acetate ion in the catalyst system gave satisfactory selectivities for the side-chain oxidation products. In p-xylene oxidation, α,α′-diacetoxy-p-xylene and p-(acetoxymethyl)benzonic acid were also obtained, as well as p-methylbenzyl acetate, though their amounts were small. The oxidation of polymethylbenzenes was also carried out.
The Synthesis of α-d-Galactopyranosyl and α-d-Mannopyranosyl 2-Amino-2-deoxy-α-d-glucopyranosides and the Conformation of Their Glycoside Linkage
Authors: Koto Shinkiti , Inada Shigeru , Zen Shonosuke 
Published: July 2006

Abstract
A new analog of trehalosamine, α-d-galactopyranosyl 2-amino-2-deoxy-α-d-glucopyranoside, was synthesized by the glycosylation of 2,3,4,6-tetra-O-(p-chlorobenzyl)-α-d-galactopyranose with 3,4,6-tri-O-acetyl-2-deoxy-2-(2,4-dinitroanilino)-α-d-glucopyranosyl bromide, using silver perchlorate and tribenzylamine in benzene, followed by chromatographic separation and the subsequent removal of the protecting groups. Similarly, α-d-mannopyranosyl 2-amino-2-deoxy-α-d-glucopyranoside was synthesized. The conformation of the glycoside linkage of these α,α-disaccharides is discussed in relation to the 13C chemical shifts of their anomeric carbons.
Pseudo-sugars. VII. Synthesis of Pseudo-hexopyranose Derivatives with α- and β-Gluco Configurations
Authors: Ogawa Seiichiro , Toyokuni Tatsushi , Kondoh Takashi , Hattori Yoshihisa , Iwasaki Shinichi , Suetsugu Masaru , Suami Tetsuo 
Published: July 2006

Abstract
Several derivatives of pseudo-hexopyranose (5-hydroxymethyl-1,2,3,4-cyclohexanetetrol) with α-gluco, (1,2,4/3,5), and β-gluco, (1,3,5/2,4), configurations were synthesized starting from the compounds obtained by cis-hydroxylation and oxyamination of Dl-di-O-acetyl-(1,3/2)-3-bromomethyl-5-cyclohexene-1,2-diol. The 1H NMR chemical shifts of the acetyl methyl protons of the several acetyl derivatives of N-(p-tolylsulfonyl)-pseudoglucosamines are discussed.
Regio- and Stereoselective Cyclopentannulation with Ketones and Propargyl Alcohol Derivatives. Synthesis of dl-Nootkatone and dl-Muscopyridine
Authors: Hiyama Tamejiro , Shinoda Masaki , Saimoto Hiroyuki , Nozaki Hitosi 
Published: July 2006

Abstract
A highly regio- and stereoselective five-membered ring annulation involving the acid-treatment of propargyl alcohol dianion adducts of ketones is described. The propargyl alcohol adduct of 2-octanone was converted into 2-methyl-3-pentyl-2-cyclopentenone by treatment with sulfuric acid–methanol (1:1) at 0 °C. As the major product, 1-methylbicyclo[5.3.0]dec-6-en-8-one was produced from 2-methylcycloheptanone. Remarkable regioselective cyclopentannulation was observed in 2-methylcyclohexanone and 2,3-dimethylcyclohexanone wherein 1-methyl- and trans-1,2-dimethyl-substituted bicyclo[4.3.0]non-5-en-7-one (BNO) are produced, respectively. With 3-butyn-2-ol, 2-methylcyclohexanone was converted into the cis-1,9-dimethyl-substituted BNO. 4-Isopropyl-2-methylcyclohexanone was transformed into an 83–85:17–15 mixture of c-3-isopropyl-γ-1,c-9-dimethyl-BNO and its 3-epimer. These results are explained in terms of the conrotatory ring-closure of thermodynamically most favorable hydroxypentadienyl cation intermediates. 3-Methoxycarbonyl-cis-1,9-dimethyl-BNO produced from 4-methoxycarbonyl-2-methylcyclohexanone and 3-butyn-2-ol was successfully transformed into dl-nootkatone by converting the methoxycarbonyl group into isopropenyl of correct stereochemistry followed by ring enlargement. Cyclopentannulation using propargyl alcohol dianion adducts of 2-cycloalkenones is discussed. Annulation takes place regioselectively to give conjugated dienones, e.g., (E)-bicyclo[10.3.0]pentadeca-1(12),2-dien-13-one from 2-cyclododecenone. This product is led to dl-muscopyridine by conjugate 1,6-addition of methyl group followed by ring expansion and finally by aromatization with hydroxylamine hydrochloride.
The Structures of Rabdosianin A, B, and C, Three New Diterpenoids from Rabdosia shikokianus Hara
Authors: Ochi Masamitsu , Okamura Mitsuyuki , Kotsuki Hiyoshizo , Miura Iwao , Kubo Isao , Kubota Takashi 
Published: July 2006

Abstract
Three new bitter diterpenoids, rabdosianin A, B, and C, have been isolated from the leaves of Rabdosia shikokianus Hara, and their structures, determined by spectroscopic and chemical methods. Complete assignments of the 1H and 13C NMR data are described.
Fluorination with Xenon Difluoride. 23. Fluorination of Ortho Substituted Aromatic Molecules
Authors: Šket Boris , Zupan Marko 
Published: July 2006

Abstract
The fluorination of 9,10-dihydroanthracene and triptycene with xenon difluoride in the presence of hydrogen fluoride occurred at α and β position with β attack predominating over α attack, while the reaction with acenaphthene resulted in the formation of 2- and 4-fluorosubstituted products, regioselectivity being very little affected by the nature of the catalyst: hydrogen fluoride, boron trifluoride and pentafluorothiophenol. The fluorination of 1,2,3,4-tetrahydro-1,4-methanonaphthalene resulted in the formation of 6-fluoro-1,2,3,4-tetrahydro-1,4-methanonaphthalene, 6,7-difluoro-1,2,3,4-tetrahydro-1,4-methanonaphthalene and rearranged product 1-(2,2-difluoroethyl) indan.
Molecular Deformation Caused by Hydrogen Bonding. 1,3-Dimethylurea
Authors: Fukushima Kunio , Kawai Takeshi 
Published: July 2006

Abstract
Raman spectra of 1,3-dimethylurea were measured for the crystalline state, acetone (proton acceptor) solution and water and methanol (proton donors) solutions. Remarkable differences were observed among the spectra of the aqueous solution and those of the acetone solution and the crystal. The difference is interpreted as due to the molecular deformation caused by hydrogen bonding.
Isomers of the Diamminebis(trimethylenediamine)cobalt(III) Complex
Authors: Sano Mitsuru , Fujita Miho , Sasaki Ken-ichi , Yoshikawa Yuzo , Yamatera Hideo 
Published: July 2006

Abstract
The isomers of [Co(NH3)2(tn)2]3+ were separated by recycling chromatography. The CD spectra of cis isomers were obtained and are compared with the spectra of the corresponding tris complexes. The magnitude of CD intensity of bisdiamine complex is roughly one-third of the corresponding trisdiamine complex.
The Synthesis of Purpurosamine B Derivatives
Authors: Honda Yutaka , Suami Tetsuo 
Published: July 2006

Abstract
Purpurosamine B and its 6-epimer have been found in antibiotic gentamicin C2 and fortimicin A respectively. Methyl 2,6-di-N-acetyl-α-purpurosaminide B and its corresponding 6-epimer have been synthesized from methyl 2-acetamido-2,3,4-trideoxy-α-d-erytho-hexodialdo-1,5-pyranoside.
Facile Dehydrogenative Dimerization of Indolizine Derivatives
Authors: Kakehi Akikazu , Ito Suketaka , Hamaguchi Akihiro , Okano Tsutomu 
Published: July 2006

Abstract
Treatment of 3-unsubstituted indolizines with a dehydrogenating agent such as palladium on carbon in refluxing xylene gave the corresponding 3,3′-biindolizine derivatives in 19–74% yields.
Effects of Crown Ethers on the Critical Micelle Concentration and the Micellar Catalysis of Sodium and Potassium Dodecyl Sulfates in Aqueous Solutions
Authors: Sen\={o} Manabu , Namba Tomiyuki , Kise Hideo 
Published: July 2006

Abstract
The catalytic micellar effects of potassium dodecyl sulfate on the hydrolysis of trimethyl orthobenzoate were found to be much retarded by 15-crown-5 or 18-crown-6.
Chlorination of Acetylenes with Sulfuryl Chloride
Authors: Uemura Sakae , Masaki Ghiaki , Toshimitsu Akio , Sawada Seiji 
Published: July 2006

Abstract
The reactions of some acetylenes with sulfuryl chloride in benzene and carbon tetrachloride at the reflux temperature afford the corresponding (E)- and (Z)-dichloroalkenes in good to moderate yields via homolytic pathway. The kinetically controlled isomer ratios (E⁄Z) depended very much on the kind of acetylenes employed; i.e., 93/7 for 1-octyne to 14/86 for 3,3-dimethyl-1-phenyl-1-butyne in benzene.
Modified Method for the Determination of Stoichiometry and Formation Constant of Molecular Complexes by Differential Refractometry
Authors: Sahai Ram , Singh Vinod 
Published: July 2006

Abstract
A modified method has been proposed for the determination of stoichiometry and formation constant of molecular complexes by Job method using differential refractometry. A more adequate model has been presented and has been verified on some strong, moderate, and weak systems in different solvents at 35 °C. The formation constants obtained by this method are in good agreement with the literature values.
The Reaction of 2-Methylfuran with Methyl Acrylate. Unusual Formation of 1,1′-Bis(5-methyl-2-furyl)ethane and Methyl 3,3′-Bis(5-methyl-2-furyl)propionate
Authors: Maruyama Osamu , Fujiwara Yuzo , Taniguchi Hiroshi 
Published: July 2006

Abstract
The reaction of 2-methylfuran with methyl acrylate in the presence of Pd(OAc)2 gave unusual products such as 1,1′-bis(5-methyl-2-furyl)ethane (22%) and methyl 3,3′-bis(5-methyl-2-furyl)propionate (10%) along with the usual aromatic substitution product. This is a marked contrast to the reaction of furan with olefins.
Determination of the Difference in Hard-sphere Volume of Conformational Isomers from Sound Velocity
Authors: Aoi Masakatsu , Arakawa Kiyoshi 
Published: July 2006

Abstract
The difference in hard-sphere volume of conformational isomers ΔV⁄V was determined from sound velocity data by a method proposed on the basis of the Lebowitz theory of solutions. The ΔV⁄V values between conformers were found to be 6, 9, 12, 7, and 12% for 1,1,2,2-tetrachloroethane, 1,1,2,2-tetrabromoethane, 1-chloropropane, 1-bromopropane, and ethylcyclohexane, respectively.
The DV-Xα MO Study of the Electronic Structures of [M(CN)6]3− (M=Cr, Mn, Fe, and Co) and [Fe(CN)6]4−
Authors: Sano Mitsuru , Adachi Hirohiko , Yamatera Hideo 
Published: July 2006

Abstract
The discrete-variational Xα (DV-Xα) calculations are used for the hexacyano transition-metal complexes, [M(CN)6]3− (M=Cr, Mn, Fe, and Co) and [Fe(CN)6]4−. The calculated values of the core- and valence-orbital energies can be correlated with the XPS results. The Mulliken populations are presented. The calculated d-d excitation energies are in good agreement with the Δ (ligand-field parameter) values obtained from the spectra.
The Decomposition of Hydrogen Iodide and Separation of the Products by the Combination of an Adsorbent with Catalytic Activity and a Temperature-swing Method
Authors: Oosawa Yoshinao 
Published: July 2006

Abstract
The decomposition of hydrogen iodide and the separation of the products by the combination of a column packed with an adsorbent with catalytic activity (platinum-supported active carbon, 2.3 wt%) and a temperature-swing method (450–900 K) are carried out, and the features and the problems of the method are examined. A one-step conversion of hydrogen iodide, 70%, is obtained at 450 K, where the equilibrium conversion is 13%. It is shown that the products of the decomposition of hydrogen iodide containing water are separated from each other.
Thermochromism of Metal Chelates with Triphenylmethane Complexons in Aqueous Solutions. IV. Carbon-13 Nuclear Magnetic Resonance Studies of Xylenol Orange (XO) and Its Zinc(II) Complex
Authors: Nakada Shoji , Ito Tasuku , Yamada Mutsuo , Fujimoto Masatoshi 
Published: July 2006

Abstract
Reversible thermochromism of a Zn(II) complex with 3,3′-bis[bis(carboxymethyl)aminomethyl]-o-cresol-sulfonphthalein (Xylenol Orange, XO) was studied in D2O by means of the 13C NMR method with reference to the data of spectrophotometric and temperature-jump measurements. 13C NMR spectra of XO were measured in the pD range between 2.0 and 11.0 and the signals were assigned. π-Electron conjugations in XO and Zn(II)–XO spread on phenol- and quinonoid-rings through the central carbon atom, but the phenyl ring having an SO3 substituent is not involved in the π-conjugated system. The temperature- and the pD-dependences of 13C NMR spectra of the Zn(II)–XO complex show that the thermochromism is caused by the temperature-dependence of a protolytic equilibrium of a phenolic hydroxyl group of the Zn(II)–XO complex.
Metal Complexes of Peptides. II. Circular Dichroism Spectra and Absolute Configuration of Bis(dipeptidato)cobalt(III) Complexes
Authors: Yasui Takaji , Kawaguchi Hiroshi , Ama Tomoharu 
Published: July 2006

Abstract
Type [Co(dipeptidato)2] complexes (dipeptidato denotes dianions of glycylglycine, β-alanine, -l-alanine, and -l-leucine, β-alanylglycine and -l-alanine, l-alanylglycine and -β-alanine, l-leucylglycine, and l-prolylglycine) and the complex [Co(gly-gly)(l-pro-gly)]− were prepared by a method using lead dioxide as an oxidizing agent, and these complexes were separated into two diastereomers or enantiomers by column chromatography. The absolute configurations of the optical isomers were determined on the basis of their circular dichroism patterns in the ligand transition region.
Metal Complexes Coordinating Pyridine Derivatives. III. Stereoselective Formation of Chromium (III) Complexes of Chiral Quadridentate Ligands
Authors: Yamamoto Yukihiro , Shimura Yoichi 
Published: July 2006

Abstract
Dichloro mononuclear and di-μ-hydroxo dinuclear chromium (III) complexes were prepared with the following three ligands, (S)-N,N′-bis(2-pyridylmethyl)propylenediamine (abbrev. S-picpn), (S,S)-N,N′-bis(2-pyridylmethyl)2,3-butanediamine (abbrev. SS-picbn), and (S,S)-N,N′-bis(2-pyridylmethyl)-1,2-cyclohexanediamine (abbrev. SS-picchxn). The SS-picbn and SS-picchxn ligands produce novel Λ(SS)-cis-α diastereomer of dichloro complex, in which the terminal chelate ring is formed by coordination of equatorially-oriented substituent on the secondary nitrogen atom. An explanation from the viewpoint of steric repulsion is given for the stereoselective formation of Λ(SS) diastereomers for the cis-α dichloro complexes of SS-picchxn and SS-picbn. A similar explanation is also given for stereoselective formation of a limited number of isomers of dinuclear μ-hydroxo complexes of S-picpn, SS-picbn, and SS-picchxn.
Thermal Behavior of a New Type Molybdenum Oxide Obtained by Oxidation of Molybdenum Powder or Molydenum Trioxide with Hydrogen Peroxide
Authors: Kurusu Yasuhiko 
Published: July 2006

Abstract
New molybdenum oxides, Mo-y(yellow) and Mo-b(blue), were obtained by the reaction between molybdenum powder or molybdenum trioxide and hydrogen peroxide. Their reactivity and structure were examined by iodometry, IR, X-ray, and thermal analyses. Mo-y is an acidic oxidant but Mo-b is acidic.