bluuebunny/crossref_metadata_2025_split huggingface dataset:
Organic Charge Transfer Salts. II. Emission Spectrum of an Organic Charge Transfer Salt, 2,4,6-Triphenylthiopyrylium–1,1,3,3-tetracyanopropenide
Authors: Tamamura Toshiaki , Yokoyama Masaaki , Kusabayashi Shigekazu , Mikawa Hiroshi 
Published: July 2006

Abstract
The emission spectrum of an organic charge transfer salt, 2,4,6-triphenylthiopyrylium–1,1,3,3-tetracyanopropenide, was studied in solutions of various solvents as well as in the solid state. A charge transfer fluorescence was observed both in the solid state and in non-polar rigid solution at 77 K, but not in fluid solution. In rigid solution, as the polarity of solvent increases, the charge transfer fluorescence shows a blue shift of its maximum wavelength and a remarkable decrease in intensity, the phosphorescence of a dissociated cation appearing predominantly. The strong dependence of the emission spectrum on the solvent polarity was explained in terms of the dissociation of the salt and the insufficient reorientation of solvent molecules around the salt in the excited charge transfer state.
Autoxidation of Aromatic Hydrocarbons Catalyzed with Cobaltic Acetate in Acetic Acid Solution. III. Oxidation of p-Toluic Acid
Authors: Kashima Mikito , Kamiya Yoshio 
Published: July 2006

Abstract
The oxidation of p-toluic acid catalyzed with cobaltic acetate was studied kinetically in acetic acid. The maximum absorption rate of oxygen was obtained in the initial stage of reaction, being represented by the same equation as in the case of toluene, ethylbenzene and cumene. That is, the kinetic equation is of first order with respect to the initial concentration of p-toluic acid, of second order with respect to the initial concentration of Co(III), and of inverse first order with respect to the initial concentration of Co(II). The relative reactivity of p-toluic acid per active hydrogen was lower than that of toluene, but higher than that of ethylbenzene and cumene. The apparent chain-length in the oxidation of p-toluic acid was much shorter than that of p-xylene oxidation.
Charge Transfer Complexes and Self-association of Flavin Adenine Dinucleotide
Authors: Takahashi Fujio , Maeda Hirotoshi 
Published: July 2006

Abstract
Spectrophotometric studies on the formation of FAD-l-tryptophane and FAD-d-tryptophane complexes, and the optical rotatory and polarographic studies of FAD have been carried out. The steric influence of ribosyl and ribityl groups on FAD for the complex formation is discussed. The dimerization of FAD in solution is suggested.
Carbonylation of Phenylacetylene by Rhodium Carbonyl Chloride
Authors: Kiji Jitsuo , Yoshikawa Susumu , Furukawa Junji 
Published: July 2006

Abstract
The reaction of phenylacetylene with carbon monoxide catalyzed by rhodium carbonyl chloride (Rh2(CO)4Cl2) gives 3,6 diphenyl-1-oxa-[3,3,0] bicycloocta-3,6-diene-2,4-dione.
The Pyrolysis of Hexyl Phosphates and Their Salts
Authors: Okamoto Yoshiki , Kimura Norio , Sakurai Hiroshi 
Published: July 2006

Abstract
The isomer distribution of hexene from the tri-n-hexyl phosphate changes gradually as the decomposition proceeded. However the formation of the isomers other than 1-hexene was appreciably depressed by the addition of anhydrous disodium hydrogen phosphate.
Catalytic Activities of Salicylaldehyde Derivatives. IV. A Synthesis of 2-Formyl-3-hydroxyphenyltrimethylammonium Chloride
Authors: Ando Makoto , Emoto Sakae 
Published: July 2006

Abstract
4-Ethoxy- 1,3-benzodioxan-5-yltrimethylammonium salt, prepared from 4-ethoxy-5-nitro-1,3-benzodioxane via 5-dimethylamino-4-ethoxy-1,3-benzodioxane, was hydrolyzed to obtain 2-formyl-3-hydroxyphenyltrimethylammonium chloride in a good yield.
The Reaction of Styryl Sulfoxides or Sulfones with Boranes
Authors: Miyamoto Norioki , Fukuoka Daisuke , Utimoto Kiitiro , Nozaki Hitosi 
Published: July 2006

Abstract
The title reaction produces β-alkylated styrene 3 in preparative yields. The formation of trans 3 from the cis sulfoxide 2 or the sulfone 7 is explained by considering the vinylic radical 8 as the intermediate.
MO Calculation for Interactions of Cu(II) and Co(III) with Hydroperoxides
Authors: Imamura Sei-ichiro , Sakaki Shigeyoshi 
Published: July 2006

Abstract
By means of MO calculation, cobalt(III) and copper(II) were considered to decompose primary and secondary hydroperoxides through the oxidative fission of their O–H bond. However, in basic solvents such as pyridine, copper (II) was found to promote the fission of their C–H bond of the α-position by the complex formation with them.
The Thermal Decomposition of Formaldehyde in the Presence of Nitric Oxide
Authors: Tadasa Kohji , Imai Naomi , Inaba Tetsuo 
Published: July 2006

Abstract
The pyrolysis of formaldehyde was investigated in the presence of nitric oxide at 500 °C. The kinetics of the reaction suggests that the pyrolysis proceeds by means of a mechanism which is initiated by this reaction:
NO+CH_2O→HNO+CHO
and which involves this reaction:
HNO+HNO→N_2+2OH
as one of the chain-carrying steps.
Partially-occupied d-Orbitals Participating in the Activation of Molecular Oxygen
Authors: Ohkubo Katsutoshi 
Published: July 2006

Abstract
UV spectroscopic and semiempirical SCFMO investigations have been performed on the partially-occupied (formally unoccupied) d-orbitals participating in the activation of the ground state, 3Σg–O2, with special attention being given to the catalytic activities of onium compounds. The order of the red shifts of the (pz)2→(pz)(d) transition of the onium compounds in an oxygen atmosphere is in satisfactory accordance with those of the magnitude, of the partial occupancy of the d-orbitals and of the catalytic activities of the onium compounds in hydrocarbon oxidations. The dxz (or dyz) and dx2–y2 orbitals are most favorably disposed for the interactions between the Group VI and V onium compounds and the (1πg)-orbital of the 3Σg–O2 respectively. The partial occupation of the formally unoccupied d-orbitals results from the d-π delocalization between the onium central atom and the neighboring atoms of substituents and the counter-anion.
Studies on the Mechanism of Methanol Oxidation on Zinc Oxide by Dynamic Treatments of Chemisorbed Species under the Reaction Conditions
Authors: Herd A C , Onishi Takaharu , Tamaru Kenzi 
Published: July 2006

Abstract
The mechanism of methanol oxidation on zinc oxide was studied by quantitatively observing the dynamic behaviour of the surface species during the course of the reaction. It was concluded that the mechanism was similar to that of the decomposition reaction, with an additional step, the oxidation of the carbon monoxide formed. As a key step in the oxidation of methanol, the decomposition of adsorbed methoxide groups in the presence of oxygen at temperatures between 140 and 180 °C has been studied by infrared spectroscopy. The methoxide groups decompose to formate ions until a maximum surface concentration is reached. The rate of decomposition at first increases with methoxide concentration, then decreases as the surface coverage approaches saturation. The observed kinetics can be explained by a mechanism which postulates that negatively charged surface species repel electrons from the surface of the zinc oxide, thus inhibiting decomposition of the methoxide groups.
Radical Addition Reactions to the Carbonyl Group. I. The Reaction of Aliphatic Aldehydes with Di-t-butyl Peroxide
Authors: Maruyama Kazuhiro , Taniuchi Mamoru , Oka Shinzaburo 
Published: July 2006

Abstract
The thermal decomposition of di-t-butyl peroxide in aliphatic aldehydes has been carefully examined. n-Aldehydes and β-substituted aldehyde gave appreciable amounts of sec-alcohols in the reactions, sec-Alcohol arose from the addition of the alkyl radical to the carbonyl group of aldehyde. α-Substituted aldehydes, however, did not give sec-alcohol, but instead gave considerable amounts of enol ether-aldehydes and dialdehydes. The addition of the alkyl radical to the carbonyl group and the decarbonylation of aldehydes were influenced remarkably by the structures of the aldehydes.
The Unsensitized Photooxidation of (+)-Limonene, 1,2-Dimethylcyclohexene, and endo-Dicyclopentadiene
Authors: Sato Tadashi , Murayama Eigoro 
Published: July 2006

Abstract
The unsensitized photooxidation of (+)-lmionene (1), 1,2-dimethylcyclohexene (2) and endo-dicyclopentadiene (3) were carried out with Pyrex-filtered light. The singlet-oxygen oxidation was found to occur concurrently with the radical oxidation to the extent of 41% with 1 and 66% with 2, but not at all with 3. A reaction path via a complex was proposed.
A New Reagent for the Syntheses of N-Monoalkylated Hydroxylamines; N-Tosyl-O-2,4,6-trimethylbenzylhydroxylamine
Authors: Isowa Yoshikazu , Kurita Hideaki 
Published: July 2006

Abstract
The reactions of N-tosyl-O-2,4,6-trimethylbenzylhydroxylamine with primary alkyl halides yielded the protected hydroxylamines. The simultaneous cleavage of N-tosyl- and O-2,4,6-trimethylbenzyl groups with hydrogen bromide in acetic acid gave the corresponding N-monoalkylated hydroxylamines such as N-benzylhydroxylamine, 1-amino-3-hydroxyaminopropane and Dl-3-hydroxyamino-2-aminopropionic acid.
Stable Crystalline Complexes of Diphenylcyclopropenone with Substituted Acetic Acids
Authors: Agranat Israel , Cohen Shmuel 
Published: July 2006

Abstract
Diphenylcyclopropenone (DCP) forms 1: 1 stable crystalline complexes with dichloroacetic acid, phenylacetic acid, diphenylacetic acid, trichloroacetic acid and cyanoacetic acid. The physical properties of these complexes are consistent with a hydrogen-bonded complexation between the carbonyl oxygen of DCP and the acidic hydrogen of the substituted acetic acid.
The Extraction and Spectrophotometric Determination of Vanadium(IV) with Tiron
Authors: Wakamatsu Yoshinobu , Otomo Makoto 
Published: July 2006

Abstract
The vanadium(IV)-Tiron chelate can be extracted into a mixed solvent of 1 : 4 isopentyl alcoholchloroform in the presence of 1,3-diphenylguanidinium salt. Beer’s law was obeyed up to 36 μg vanadium per 10 ml of the solvent.
Notiz über neue \overset+S–\overset−N–Ylid-Komplexe von Platin(II)
Authors: Matsubayashi Gen-etsu , Toriuchi Masaharu , Tanaka Toshio 
Published: July 2006

Abstract
The reaction of (CH3)2SNC(O)R (R=C6H5, C6H4CH3-P)(Y) with K2PtCl4 in water gives a stable ylide complex, PtCl2(Y)(DMSO), in which Y coordinates to the Pt(II) via nitrogen and DMSO via the sulfur to form a cis-configuration.
Micellar Effect of Lauryldimethylsulfonium Halides on the Hydrolysis of p-Nitrophenyl Decanoate
Authors: Okonogi Tsuneo , Yano Yumihiko , Tagaki Waichiro 
Published: July 2006

Abstract
Micellar effects of lauryldimethylsulfonium chloride, bromide, and iodide on the hydrolysis of p-nitrophenyldecanoate were found to be very similar to those of the corresponding lauryltrimethylammonium halides.
The Induced Optical Rotatory Dispersion of Mercury Orange-Phosphoenolpyruvate Carboxylase
Authors: Miyamura Masataka , Suzuki Shuichi 
Published: July 2006

Abstract
On reacting with a SH group, the mercury orange enzyme formed, showed a positive Cotton effect near 500 nm, and the optical activity of which was remarkably induced by adding ADP or PEP. It seemed that ADP or PEP might move to the vicinity of the active amino acid residues.
A Study on Phosphorylation by Means of 8-Quinolyl Phosphates
Authors: Takaku Hiroshi , Shimada Yoshifusa , Arai Kenichi 
Published: July 2006

Abstract
Phosphorylation of phosphates and nucleosides forming unsymmetrical pyrophosphates and nucleotides by the use of 8-quinolyl phosphates has been investigated. According to this method, various pyrophosphates and nucleotides were obtained in high yields.
The Use of Hydroxybenzoic Acids to Polymers. II. Polyether-amides Obtained from the Interfacial Polycondensation of p-Carboxyphenoxyacetic Acid Dichloride with Aliphatic Diamines
Authors: Hirao Ichiro , Kito Taketoshi , Fujimoto Tsutomu , Yoshihara Hideo 
Published: July 2006

Abstract
Five polyether-amides were prepared from the title reaction. The physical properties ([η], Tm Tg, and decomp. temp.) and the effects of the reaction conditions were examined. These polymers were superior in some physical properties to the polymers obtained from the melt polycondensation.
The Preparation of 2,2-Bis(trifluoromethyl)-1,3-heterocycles from 2,2,4,4-Tetrakis(trifluoromethyl)-1,3-dithietane
Authors: Kitazume Tomoya , Ishikawa Nobuo 
Published: July 2006

Abstract
2,2-Bis(trifluoromethyl)-1,3-heterocyclic compounds, 3, 4, 6, 7, and 8, were prepared by the reaction of 2,2,4,4-tetrakis(trifluoromethyl)-1,3-dithietane (1) with bifunctional compounds such as amino alcohols, o-aminophenol, o-aminothiophenol and o-phenylenediamine.
Die Kinetische Racemat-Spaltung des 1-Phenyläthanols und 1-Phenyläthylamins durch die aktivierten N-Tosyl-l-prolin-ester
Authors: Sakan Takeo , Mori Yutaka , Yamazaki Tomio , Yamashita Tetsushi , Nakamura Nobuo 
Published: July 2006

Abstract
Die optische Ausbeute von 10–50% wird erzielt. Einander entgegengesetztes Reaktionsverhalten zeigen die Magnesiumbromide des 1-Phenylathanols und des 1-Phenylathylamins bei der Umsetzung mit den Reagenzien.
SORPTION OF AMMONIA BY CHARCOAL
Authors: Sameshima Jitsusaburo 
Published: July 2006

Abstract
1. The sorption velocity of ammonia by sugar charcoal has been measured, extending over six months.
2. It was known that the charcoal absorbs ammonia for a very long time, taking more than several months to arrive at the equilibrium condition.
3. The sorption velocity from one hour forward can be expressed by an equation.
x=Klogt+k.
where x is the sorption amount, t the time, and K and k are the constants.
4. The mechanisms of sorption have been discussed.
5. The sorption velocity depends upon the dissolution velocity of ammonia molecules into the narrow molecular cavities of charcoal.
ON THE TRUE NATURE OF “PER-ACIDS” AND THE ALLEGED “ACID NUCLEUS THEORY”
Authors: Hakomori Shin’ichirô 
Published: July 2006

Abstract
1. Starting from three postulates, the presence of “Acid nuleus” has been considered and a new idea “Induction valence” also introduced.
2. That “Oxy-acids” and “Per-acids” are nothing but “Acid nuclei” combined with water or hydrogen peroxide by means of “Induction valence” has been rendered clear.
A NOTE ON NEGATIVE INDUCED REACTIONS
Authors: Miyamoto Susumu 
Published: July 2006

Abstract
(1) The possibility of the existence of negative induced reactions are described with examples, studied by the author.
(2) The definition of the terms actor, inhibitor and acceptor are given in the case of negative induced reactions.
(3) Corresponding to the term induction factor, the term inhibition factor was introduced in the case of negative induced reactions, although its value was not yet calculated in the actual cases.
(4) A classification of negative induced reactions was proposed. The classification will be unable to be confirmed thoroughly by experimental facts, as the examples of negative induced reactions are very few.
C2− Ion as Impurity from Halogen Ion Source and a Possibility of Its Application to Reaction Kinetics Studies
Authors: Kashihira Nobuyuki , Vietzke Egon 
Published: July 2006

Abstract
Negative ions from a hot LaB6 surface were studied with a quadrupole mass filter. C2− ion was formed via a charge exchange process. About 10−11 A of mass-selected C2− ion current was obtained above 40 eV of ion energies. A possibility of employing this to study a reaction kinetics is discussed.
ESR Studies of a New Stable π-Conjugated Bisaryloxyl Biradical
Authors: Mukai Kazuo , Hara Tsukasa , Ishizu Kazuhiko 
Published: July 2006

Abstract
The new stable π-conjugated bisaryloxyl biradical, 4,4′-(m-phenylene)bis(2,6-di-t-butylphenoxyl), was prepared, and the g- and D-tensor values of the biradical were determined from an analysis of an asymmetric ESR spectrum of a frozen solution containing the biradical. A resolved hyperfine structure was observed in the ESR spectrum of a liquid solution of the biradical, giving the hyperfine splitting values theoretically expected for the triplet state of the biradical.
Crystal and Molecular Structure of Bis(1-diphenylphosphinothioyl-3-methylthioureato)nickel(II)
Authors: Iwamoto Toschitake , Ebina Fujio , Nakazawa Hiroshi , Nakatsuka Chiaki 
Published: July 2006

Abstract
The title compound [Ni{(C6H5)2PSNCS-NHCH3}2] was found to crystallize in the monoclinic space group C2/c with a=23.29(1), b=9.457(2), c=16.40(1) Å, β=121.33(8)°, Z=4. The six-membered chelate ring built of five kinds of atoms, Ni, 2S, P, N, and C, was demonstrated.
Diffusion Coefficients of Thallium(I) and Cadmium(II) Ions in Aqueous Nitrate Solutions Determined Chronoamperometrically with a Thin-walled Hanging Mercury Drop Electrode
Authors: Ikeuchi Haruko , Iwai Kyoichi , Kaneko Mamoru , Maya Muneo , Satô Gen P 
Published: July 2006

Abstract
The diffusion coefficients (D) of Tl+ in 0.1 and 0.5 mol dm−3 KNO3 and of Cd2+ in 1.0 mol dm−3 KNO3 in the temperature range 5 °C–35 °C are given with additional data including activation energies. kT/Dη, where η is the viscosity of the nitrate solution, depends primarily on the diffusing species.
2-Alkylation Reactions of Thiophene and 1-Methylpyrrole with Trialkylboranes
Authors: Sotoyama Toshiki , Hara Shoji , Suzuki Akira 
Published: July 2006

Abstract
The reactions of iodine with ate-complexes prepared from trialkylboranes and 2-thienyllithium or 1-methyl-2-pyrrolyllithium were found to give the corresponding 2-alkylthiophenes or 1-methyl-2-alkylpyrroles, respectively, in good yields.
Synthesis of Disubstituted Benzoquinones by the Photochemical Reaction of Acetylenes with Fe(CO)5
Authors: Maruyama Kazuhiro , Shio Toru , Yamamoto Yoshinori 
Published: July 2006

Abstract
Internal acetylenes substituted with alkyl groups and terminal acetylenes substituted with alkyl, aryl, and functionallized alkyl groups are converted to disubstituted quinones by the photochemical reaction with Fe(CO)5 followed by treatment with Ce(IV).
The Solvent Extraction of Several Univalent Metal Picrates by 15-Crown-5 and 18-Crown-6
Authors: Takeda Yasuyuki , Got\={o} Hiroshi 
Published: July 2006

Abstract
The overall extraction equilibrium constants (Kex) for 1:1:1 complexes of 15-crown-5 (15C5) and 18-crown-6 (18C6) with several univalent metal picrates between benzene and water have been determined at 25 °C. The Kex sequences of the univalent metal ion with 15C5 and 18C6 are Ag+&gt;Na+&gt;Tl+&gt;&gt;K+&gt;Rb+&gt;Cs+&gt;Li+ and Tl+&gt;K+&gt;Rb+&gt;Ag+&gt;Cs+&gt;Na+&gt;&gt;Li+ respectively. The Kex series for each same crown ether reflects the stability and the extractability of the univalent metal ion-crown ether complex in the aqueous phase. The Kex sequences for the 15C5 system depends entirely on the extractability of the univalent metal ion-crown ether complex. In the case of the 18C6 system this largely depends on the stability of the univalent metal ion-crown ether complex.
Kinetic Studies for the Acyloxy Exchange Reactions of Acyloxytrimethylsilanes with Carboxylic Acids
Authors: Kozuka Seizi , Kitamura Takuro , Kobayashi Noboru , Ogino Kenji 
Published: July 2006

Abstract
The acyloxy exchange reactions of acyloxysilane with carboxylic acids have been studied kinetically. The rate of reaction has been found to proceed faster with a stronger attacking acid and more basic leaving acyloxy group. The rate was markedly accelerated by the addition of base. The steric effect due to substituents on the silicon atom and hydrogen-deuterium kinetic isotope effects have been examined. A mechanism involving the 5-coordination of the silicon atom prior to the rate-determining proton transfer has been suggested.
Carbon-13 NMR Spectra of Stereoisomeric Substituted 2-Methylcyclo-hexanols and Their Acetates: A Comparison of the Observed and Predicted Chemical Shifts
Authors: Senda Yasuhisa , Ishiyama Jun-ichi , Imaizumi Shin 
Published: July 2006

Abstract
The 13C NMR spectra of stereoisomeric 4-t-butyl-2-methylcyclohexanols, 5-t-butyl-2-methylcyclohexanols, 2-methylcyclohexanols, and their acetates were measured. The observed chemical shifts were compared with the values estimated by using the substituent parameters of methyl, t-butyl, and hydroxyl groups. An appreciable deviation by vicinal substitution was found between the predicted and observed chemical shifts of C-1 and C-2. The substituent parameters of the acetoxyl group on the cyclohexane ring were estimated by means of a comparison of the chemical shifts of cis- and trans-4-t-butylcyclohexyl acetate, and those of t-butylcyclohexane.
Surface Activity of Complex in Mixed Surfactant Solution
Authors: Tajima Kazuo , Nakamura Akio , Tsutsui Takao 
Published: July 2006

Abstract
The dissociation constant of the complex formed in the mixed and very dilute surfactant solution of 3-(dodecylammonio)-propionate (NDA) and sodium alkylsulfates (C10, C12, C14) (SAS) was determined by measuring surface tension and adsorbed amounts of the solution. The composition in the surface and bulk phases did not coincide at the equimolar mixture. The adsorbed monolayer on the solution consists of the coadsorption of NDA–SAS complex (1:1) and free NDA, while the adsorption of free SAS was almost zero in various concentrations studied. Under these conditions the surface activity of the complex alone was obtained. The relationship between the surface activity and bulk concentration for each mixed solution was discussed in terms of relative adsorbability. The surface activity of the complex was one order of magnitude higher than that of NDA and two orders higher than that of SAS.
Vibrational Spectra and Normal Coordinate Analysis of N-Methyl Thiourea
Authors: Dwarakanath K , Sathyanarayana D N 
Published: July 2006

Abstract
The infrared spectra of N-methylthiourea (NMTU) and its N-deuterated and S-methylated species were measured. Assignment of the infrared and Raman spectra of NMTU has been accomplished by correlation with thiourea and by use of infrared band shifts on N-deuteration as well as S-methylation. Normal coordinate analysis was performed for all the fundamentals of NMTU and NMTU-d3, the assignments obtained from the force field calculations being discussed in relation to those in other related thioureas and thioamides. The potential barriers to the internal rotations for the –NH2, –CH3, and –CN groups were estimated from the force constants.
Infrared Studies on Water Adsorption Systems with the Use of HDO.II. Na-Y Zeolite
Authors: Hino Masao , Mikami Yasuko 
Published: July 2006

Abstract
Infrared spectra of the systems of Na-Y zeolite–H2O, D2O, and HDO were measured. It was shown that there are three types of adsorbed water in the zeolite-water system. Type I: adsorbed in a state in which two hydroxyl bonds are highly non-equivalent; it gives absorptions at 3695, 3400, and 1645 cm−1, and is the same type as that on the Molecular sieve 13X. Type II: adsorbed in another state in which the bonds are nearly equivalent; it gives bands at 3610, 3540, and 1645 cm−1. Type II was more resistant to dehydration than Type I, and was irreversible for the back-adsorption of a small amount of water at room temperature, whereas Type I was almost completely reversible. Type III was observed for back-adsorption under this condition; it gives bands at 3635, 3500, and 1655 cm−1. Type III can be transformed into Type II by heat treatment at a temperature which varies depending on the amount of adsorbed water. The other bands were assigned as follows: Bands at 3750 and 3645 cm−1 correspond to stretching of surface structural OH, and that at 3240 cm−1 to overtone deformation of adsorbed water. The sites of adsorbed water molecules of Types I and II were discussed.