bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relations between Electronic Absorption Spectra and Spatial Configurations of Conjugated Systems. VI. Triphenylethylene, Tetraphenylethylene and Tolan
Authors: Suzuki Hiroshi 
Published: July 2006

Abstract
The most probable configuration of triphenylethylene as well as that of tetraphenylethylene has been inferred to be the one in which all of the phenyl groups are rotated out of the plane of the ethyl-enic bond, on the basis of the analysis of the ultraviolet absorption spectra by application of the method based on the simple LCAO molecular orbital method described in the preceding part of this series. Some physical and chemical properties of these compounds have been discussed with reference to the spatial configurations.
The method has been applied also to tolan (diphenylacetylene), and it has been shown that the calculated wavelengths of the bands agree fairly well with the observed ones.
In addition, it has been shown that the spectrum of tolan in the crystalline state measured by the pressed KCl-disk technique resembles the spectrum of the solution in n-heptane on the whole, and that the red-shift of each band associated with the change of the state from the n-heptane solution to the crystalline state increases with almost complete regularity with the wavelength of the band from about 1.3 mμ at 217.2 mμ to about 4.4 mμ at 297.2 mμ, the shifts observed here being appreciably smaller than the analogous shifts observed by Dale in the spectra of naphthalene and anthracene.
Visible and Ultraviolet Absorption Spectra of 1,3,5-Trinitrobenzene in Water in the Presence of Sodium Hydroxide
Authors: Abe Takehiro 
Published: July 2006

Abstract
(1) Absorption spectra of the colored solutions of 1,3,5-trinitrobenzene and various concentrations of sodium hydroxide in water have been measured at 25°C. The colored solution shows absorption bands at 260, 300 and 440∼500mμ. The absorbances of the visible absorption bands increase below the sodium hydroxide concentration, about 0.6 n, but decrease above the sodium hydroxide concentration, as the concentration of sodium hydroxide increases. On the other hand, the 260 and 300 mμ bands, observed above the sodium hydroxide concentration, about 0.4 n, increase their absorbances with an increase in concentration of sodium hydroxide. These lead to the suggestion that the visible absorption bands are due to [Trinitrobenzene·OH]− and the 260 and 300 mμ bands are due to [Trinitrobenzene·2OH]2−.
(2) Below the sodium hydroxide concentration, about 0.6 n, Benesi and Hildebrand’s equation holds for the colored solutions, giving an equilibrium constant of 2.7 for the reaction between trinitrobenzene and hydroxyl ion in water at 25°C.
(3) On keeping the colored solution to stand for long hours, the 260 and 300 mμ bands and the visible absorption bands decrease their absorbances, while an absorption band appears at about 350 mμ.
(4) When an aqueous solution of hydrochloric acid is added into the colored solution with a high concentration of sodium hydroxide, the absorbances of the visible absorption bands increase. The 260 mμ band and the visible absorption bands disappear by adding a solution of hydrochloric acid, enough to neutralize the sodium hydroxide contained in the solution. By the addition of acids, [Trinitrobenzene·OH]− and [Trinitrobenzene·2OH] 2− seem to change into trinitrobenzne reversibly.
Interaction of Surface Active Agent with Amylose
Authors: Takagi Toshio , Isemura Toshizo 
Published: July 2006

Abstract
It was found that a specific precipitate is formed when some ionic surface active agents are added to amylose solution and it was confirmed by X-ray diffraction study that this phenomenon is due to the formation of the helical complex between amylose and a surface active agent.
It is also inferred that the same complex is formed even in the dissolved state from the study on the effect of the surface active agent on the viscosity of amylose solution and on the absorption spectrum of amylose-iodine complex.
Some Characteristics of Zinc Oxide Phosphor
Authors: Maeda Keiji 
Published: July 2006

Abstract
Zinc oxide phosphors were prepared under various conditions. From measurements on the characteristics of the green luminescence of the phosphors fired in reducing atmosphere, the following features were observed. (1) In the excitation spectrum, there is a sharp peak at the position of the absorption edge and a gradual decrease toward shorter wavelengths with some structures. The observed maximum value of excitation efficiency is 0.31. (2) The luminescence intensity decreases with increasing temperature. The plot of intensity against temperature has an unusual shape in the neighborhood of 0°C. (3) The decay of luminescence is exponential and the time constant, 0.4 μ sec., is smaller than that previously reported by an order of magnitude. Long persistent phosphorescence is observed indicating the presence of deep hole traps. (4) The luminescence intensity decreases in a gaseous ambient of molecules having the hydroxyl group.
Standing on the present experimental results, discussions have been undertaken on the luminescence center as well as on the theoretical explanation of the observed characteristics.
An Electron Diffraction Investigation on the Molecular Structure of Hydrazine
Authors: Morino Yonezo , Iijima Takao , Murata Yoshitada 
Published: July 2006

Abstract
By the sector-microphotometer method of electron diffraction the molecular structure of hydrazine was obtained as shown in Table II. The bond distances are in good agreement with the values obtained by the infrared vibration-rotation spectrum. The mean amplitudes agreed with the calculated values within the limits of errors.
The Bischler-Napieralski Reaction in Liquid Sulfur Dioxide. Formation of N,N′-bis-β-Phenethyl Acet- and Benz-amidines and N,N′-Diphenyl Acet- and Benz-amidines
Authors: Tada Ritsuro , Sakuraba Hisanori , Tokura Niichiro 
Published: July 2006

Abstract
The Bischler-Napieralski reaction of N-β-phenethyl acetamide in liquid sulfur dioxide resulted in the formation of N,N′-bis-β-phenethyl acetamidine in addition to the expected 1-methyl-3, 4-dihydroisoquinoline. And the reaction product from N-β-phenethyl benzamide were N,N′-bis-β-phenethyl benzamidine and N-benzoyl-N,N′-bis-β-phenethyl benzamidine in addition to the expected 1-phenyl-3,4-dihydroisoquinoline. In the case of acetanilide,N,N′-diphenyl acetamidine was produced. Benzanilide afforded N,N′-diphenyl benzamidine and N-benzoyl-N,N′-diphenyl benzamidine under a similar condition. The similar reaction of benzyl acylamides in liquid sulfur dioxide failed to yield such amidines.
Benzylideneaniline. II. Iodine Complexes of Benzylideneaniline and its Derivatives
Authors: Ebara Nozomu 
Published: July 2006

Abstract
Absorption spectra of the mixtures of iodine with benzylideneanilines in various concentrations have been measured, and from the optical densities of the solutions the equilibrium constants have been calculated.
The equilibrium constants are unexpectedly small. But for methoxy-derivatives and especially for ortho-compound, the equilibrium constants are considerably large.
For o-methoxy- and o-chloro-derivatives, the charge-transfer bands appear at the longer wavelengths.
These experimental evidences are also adequately explained by the perpendicular structure of benzylideneaniline.
The Kinetics of Substitution Reactions Involving Metal Complexes. III. Reaction between Copper(II) and Zinc-Ethylenediaminetetraacetate Complexes in Aqueous Solutions
Authors: Kato Kiyoko 
Published: July 2006

Abstract
The kinetic study of the substitution reaction of copper (II) and zinc-EDTA complexes in acetate buffer solutions was carried out with the same procedure as reported previously. The reaction was found to proceed simultaneously through three different reaction paths under the experimental conditions. The rate constants for three elementary reactions of those reaction paths were determined at 15 and 0°C, and the heats of activation and the entropies of activation for the reactions were calculated.
Absorption Spectra of Dyes. V. The Composition and Intermodular Charge Transfer Spectra of Complexes Formed in Aqueous Solution of the Mixture of Chlorazol Sky Blue FF and Chrysophenine G
Authors: Kobayashi Teruaki , Tanizaki Yoshié , Ando Noboru 
Published: July 2006

Abstract
1. The change in absorption spectra of mixtures of Chlorazol Sky Blue FF and Chrysophenine G in aqueous solution was stoichio-metrically studied in detail and a 1:1 complex and a 1:2 complex were proved to be formed.
2. The absorption spectra of the complexes were drawn from experimental results by use of the calculated equilibrium constants, and the phenomena of these absorptions were qualitatively explained according to VB and MO methods, with the conclusion that charge transfer spectra from Chlorazol Sky Blue FF to Chrysophenine G appear in the complexes.
The Equilibrium between the Sn-Pb Liquid Solution and the H2–H2O Gaseous Mixture
Authors: Atarashiya Koji , Uta Masahiro , Shimoji Mitsuo , Niwa Kichizo 
Published: July 2006

Abstract
Equilibrium in Sn (in liquid alloy)-H2O–SnO2–H2 system has been determined from 750 to 800°C by measuring the ratio of pressures between H2O and H2 gas mixtures. From this the activity of tin liquid tin-lead solutions has been calculated, and the following equation has been derived at 775 °C.
\barGSne=2330(1−xSn)2−600(1−xSn)3 cal./mol.
The temperature dependence of \barGSne could not be determined. However, if this value is calculated by combining Kleppa’s value for the excess heat, calorimetrically determined, with that of Elliott and Chipman for the excess entropy, the agreement between the value thus obtained and that of the present investigation is quite reasoable, taking into consideration the accuracies of these experiments. Theoretical considerations have been given for the excess functions of this system. It shonld be emphasized that the electrochemical effect of charge transfer is very small or may be regarded as zero in the lead-tin system and that the size factor is important.
Electrophotoluminescence of Zinc Sulfide Phosphors
Authors: Kotera Yoshihide , Naraoka Kiyotaka 
Published: July 2006

Abstract
The effects of the electric field on the luminescence of ultra-violet excited zinc sulfide phosphors are shown as a function of kinds of activator and chemical composition of matrix. All phosphors were measured in an electroluminescent cell of common construction. The electric field was obtained from 50c.p.s. alternating line. The Gudden-Pohl effect of both hexagonal and cubic ZnS: Cu increased with increasing copper content and reached a maximum at a content of 10−5 mol. The effect of cubic ZnS: Cu (10−5) is the strongest in the zinc sulfide phosphors at room temperature. Cubic sulfide phosphors activated by copper are sensitive to both momentary stimulation and field quenching.
Further, a relation between electron traps and the Gudden-Pohl effect was studied. From the temperature dependence of the Gudden-Pohl effect and glow curves, it might be assumed that the deeper trap which corresponds to a glow peak at 55°C does not produce the Gudden-Pohl effect at room temperature, rather the increase of the effect at higher temperature may be ascribed to the emptying of the deeper traps which can release their electrons thermally at higher temperature.
Effect of Oxygen Pretreatment on Hydrogen and Carbon Monoxide Chemisorption on Zinc Oxide
Authors: Kubokawa Yutaka 
Published: July 2006

Abstract
The effect of oxygen treatment at about 500°C of zinc oxide upon the chemisorption of hydrogen as well as of carbon monoxide was investigated in order to clarify the relation between the electronic state of the adsorbent and the chemisorption. In the case of hydrogen chemisorption, the amount adsorbed was reduced only slightly and the rate of desorption remained practically unaltered after oxygen treatment. On carbon monoxide chemisorption the oxygen treatment gave no effect. It was concluded from these results that both the chemisorption of hydrogen and that of carbon monoxide are essentially independent of the electronic state of zinc oxide. On the basis of such a conclusion combined with other results, the inapplicability of the model of hydrogen chemisorption proposed by Morrison was pointed out.
Hydrogen Chemisorption on ZnO·Cr2O3, ZnO·MoO3 and Cr2O3
Authors: Kubokawa Yutaka 
Published: July 2006

Abstract
For hydrogen chemisorption on ZnO·Cr2O3, ZnO·MoO3 and Cr2O3, the rates of adsorption and desorption, and adsorption equilibrium were investigated. The activation energy of adsorption ranged from 8 to 12 kcal./mol. for ZnO·Cr2O3, and from 15 to 25 kcal./mol. for ZnO·MoO3. The value for Cr2O3 was about 13 kcal./mol. In the cases of ZnO·MoO3 and Cr2O3, where desorption is negligible during adsorption, the rate of adsorption was proportional to P0.8, while with ZnO·Cr2O3 desorption was found to occur appreciably. The activation energy of desorption increased with a decreasing amount adsorbed from 10 to 35 kcal./mol. for ZnO·Cr2O3, and from 15 to 45 kcal./mol. for Cr2O3, while an approxi-mately constant value of 41 kcal./mol. was obtained with ZnO·MoO3 except in the initial stage of desorption. The maximum heat of adsorption estimated from adsorption isotherms was about 25 kcal./mol. for both ZnO·Cr2O3 and ZnO·MoO3. For all the systems studied, desorption experiments suggested the existence of surface heterogeneity with the activation energy of adsorption and heat of adsorption varying inversely in the cases of ZnO·MoO3 and Cr2O3, while with ZnO·Cr2O3 the variation in the same direction was observed. On the basis of the results hitherto obtained, the general characteristics of hydrogen chemisorption on oxides were discussed.
Spectrophotometric Determination of Tellurium(IV) by Extraction with Tributylphosphate
Authors: Hikime Seiichiro 
Published: July 2006

Abstract
Spectrophotometric determination of tellurium-(IV) by means of extraction with 100% TBP was studied. Tellurium forms yellow complex, as seen in the literature, with thiourea in a dilute hydrochloric acid solution, and the complex is extracted into TBP whenever potassium thiocyanate is present in excess in the solution.
Conditions on the extraction and the determination of tellurium were examined. It was found that addition of 2 ml. of thiourea solution (80g./1.) and 2 ml. of potassium thiocyanate solution (500 g./1.) to the sample solution is enough to extract 1 to 500 γ of tellurium per 20 ml. from the dilute hydrochloric acid solution with 20 ml. TBP. Tellurium complex was extracted thoroughly with TBP at pH 1. For the determination of tellurium, the absorbance of the TBP phase was measured spectrophotometrically at 400 mμ.
The effect of the diverse ions on the absorb-ance of tellurium complex was examined and also pre-extraction test on the removal of interference ions was carried out.
Partial Molal Volumes of Butyl Alcohols and of Related Compounds in Aqueous Solution
Authors: Nakanishi Koichiro 
Published: July 2006

Abstract
Partial molal volumes of four isomers of butyl alcohol and ethylene glycol in water are evaluated from the density measurement. They are compared with those of other monohydric alcohols and all the available data which have a common characteristic in the dependence upon the alcohol fraction are summarized.
On the Hydrolysis Products of Abietic Acid-Maleic Anhydride Adduct
Authors: Abo Masahiro 
Published: July 2006

Abstract
Hydrolysis of abietic acid-maleic anhydride adduct was carried out in two ways. The elementary analytical data of both resulting products were in good agreement with that calculated for the hypothetical tricarboxylic acid C24H34O6, and at about 100 to 120°C these products lost the weight, which corresponded to the loss of one molecule of water from one molecule of the acid, to revert to the original anhydride adduct. But, they showed only an apparent acid number when the titrations were carried out in ethyl alcohol, similarly to the case of the anhydride adduct. Their infrared spectra suggested an existence of five-membered ring anhydride structure and a hydrated water. On the basis of these facts, we offered an anhydride adduct monohydrate structure II for the above hydrolysis products.
Effect of Additives on the Hydrogen Reduction of Nickel Oxide
Authors: Iida Yoshio , Shimada Kenzo 
Published: July 2006

Abstract
The effect of additive impurities on the hydrogen reduction of nickel oxide has been studied. The additives have no influence on the reduction unless they dissolve into nickel oxide crystal. The reduction is promoted by the dissolution of cupric oxide and is retarded by the dissolution of lithium oxide and aluminum oxide. The effect of additives on the reduction is not explained reasonably by their catalytic behavior. There is no direct correlation between the reductive properties of nickel oxide and the type of additives from the point of the semiconducting behavior of these materials. The effect of additives on the reduction is related to their heats of formation.
Spectrophotometric Determination of Traces of Boron in Uranium
Authors: Onishi Hiroshi , Ishiwatari Nasumi , Nagai Hitoshi 
Published: July 2006

Abstract
Procedure is described for the spectrophoto-metric determination of 0.1∼1 p.p.m. of boron in uranium (metal, U3O8, and uranyl sulfate). Uranium metal was first converted to U3O8, and the oxide was dissolved in sulfuric acid and hydrogen peroxide. Boron was separated by distillation as methyl borate from sulfuric acid solution, and finally determined by the curcumin method.
Magnetic and Spectrophotometric Studies on Decoloration of Thiocyanato Iron(III) Complexes in Solutions. I
Authors: Miyake Chie 
Published: July 2006

Abstract
The decoloration mechanism of thiocyanato iron (III) complex solutions was investigated by means of both the magnetic and spectrophotometric methods. The data for the magnetic measurements supported that the decoloration was caused by the simple reduction of iron(III) to iron(II) by thiocyanate ions. But such a simple model of the reduction was not favourable for the observed decoloration, because the decrease in the absorbance was too small, being only about twenty percent. In order to eliminate this discrepancy, another scheme was proposed, which ascribes the magnetic and spectral observations to the formation of a binuclear complex of iron(III) and iron(II), a so-called dimer, during the decoloring reaction. This dimer possesses only one unpaired electron and accordingly very small magnetic moment, but possesses the significant absorbance due to iron(III). On this model, the greater decrease in magnetic moment and the rather smaller decrease in absorbance which we obtained, were quite satisfactorily clarified.
Rapid Determination of Thorium by Fluoride Titration Using Some Chromotropic Azo Dyes
Authors: Datta Sachindra Kumar 
Published: July 2006

Abstract
The thorium-chromotropic azo dye complexes are found to be fast-reacting with fluorides, in which exchange of dye molecule for fluoride ion takes place. The colored thorium-dye complexes are thereby decomposed with the liberation of the free dye and formation of thorium fluoride. The color changes at the end point enable visual comparison. Three dyes: nitroso-SNADNS-4, SNADNS-6 and CHPADNS have been used here as thorium complexing agents or indicators. The color change with the nitroso-SNADNS-4 at the end point is very sharp. Titrations are best carried out at pH range 2.4∼2.8 and thorium present should not be more than 50 mg. per 50 ml. solution. With the increased precipitation of thorium fluoride the dyes are adsorbed in the precipitate and the end point becomes more obscured. Microgram amounts of thorium may also be determined by this method. A large number of cations and anions interfere in the process, of which the most important are: iron, cerium, rare earth elements, alkaline earth elements, phosphates, borates, oxalates, tartrates and citrates. This method is best applicable to thorium solutions from which the interfering elements have been removed.
Spectrochemical Study of Microscopic Crystals. XXI. The Structure and Absorption Spectra of the Red and the Black Form of Nitrosopentammine-cobalt Salts
Authors: Yamada Shoichiro , Nishikawa Hiroaki , Tsuchida Ryutaro 
Published: July 2006

Abstract
In order to examine the structure of the red and the black nitrosopentammine-cobalt salts, their dichroism in the visible and near-ultra-violet region has been quantitatively determined at room temperature by the microscopic method.
The absorption spectrum of the “black salt” is found to be understandable best on the assumption that the “black salt” has binuclear complexes of cobalt(III), showing a special kind of absorption band due to the interaction between the two cobalt(III) ions through the N2 group.
The Adsorption of Dye Mixtures by Cellophane Sheet. II. A Quantitative Discussion of the Adsorption of Dyes
Authors: Horiki Yukio 
Published: July 2006

Abstract
1. The single dyeings of Chlorazol Sky Blue FF and Chrysophenine G and the mixture dyeing of them were carried out at 50, 70 and 90°C.
2. In the single dyeing, the surface layer volume in Vickerstaff’s equation was adjusted so as to obtain constant values of the standard affinity.
3. In the mixture dyeing, the behavior of dyes was explained quantitatively on the basis of the information of the single dyeing and the interaction between both dyes in the dyebath.
On the Assignment of a Band at 727 cm−1 in Polyethylene Terephthalate
Authors: Miyake Akihisa 
Published: July 2006

Abstract
Infrared spectra of polyethylene terephthalate and polyethylene-d4 terephthalate were investigated in the KBr and CsBr regions. No band attributable to a CO2 out-of-plane bending vibration was found below 700 cm−1. The only band assignable to this mode is a strong and perpendicular band at 727 cm−1. This fact together with the disappearance of the 727 cm−1 band in polyethylene deuteroterephthalate, indicates that two bands at 875 and 727 cm−1 in polyethylene terephthalate can be assigned to coupled vibrations of aromatic C–H and ester CO2 out-of-plane bending modes. This interpretation provides a consistent explanation for the spectral differences between ethylene glycol dibenzoate and 1,2-ethanedithiol dibenzoate and between ethylene glycol bis-(4-methoxycarbonylbenzoate) and 1,2-ethanedithiol bis-(4-methoxycarbonylbenzoate) as well as for the anomalous shifts of C–H out-of-plane frequencies and the appearances of “extra bands” in several aromatic esters.
Application of the Theory of Regular Solutions to Binary Phase Equilibria. I. Method of Application to Binary Liquid Equilibria
Authors: Ishida Kiyoharu 
Published: July 2006

Abstract
The same expression for the correlation of compositions in mutual equilibrium of two liquid phases as that which is immediately obtained from the empirical relations used by Cox and Herington was derived thermodynamically. The method has been given in such a manner as to represent the solubility curve for a binary liquid system symmetrically and to estimate the interchange energy from the mutual solubility data by applying the theory of regular solutions.