bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reaction between Iron Pentacarbonyl and Ammonia under High Pressure of Carbon Monoxide
Authors: Uchida Hiroshi , Bando Kenichiro 
Published: July 2006

Abstract
Iron pentacarbonyl has been found to react with ammonia under high pressure of carbon monoxide at temperatures higher than 150°C, to result in a stable powder usually having the practical composition Fe2(CN)4(CO)(NH3)4. In a particular case of the reaction the composition tends to increase in (CO) but decrease in (NH3), till it attains the composition Fe2(CN)4(CO)2(NH3)3.
The crude powder is insoluble in most of solvents, and can not therefore be further purified by recrystallisation, while a potassium salt of the complex anion has been crytallized from its caustic potash solution, in yellow fine prismatic crystals, which have appeared to have the composition K2(Fe(CN)4(CO)(NH3))·1.5H2O. considering this composition in conjunction with that of the crude powder, the powder seems to consist of a complex anion (Fe(CN)4(CO)(NH3))2− and a complex cation (Fe(NH3)3)2+.
Besides this compound having a different chemical composition from those found by J. A. Müller and thereafter by W. Hieber et al., its manufacturing procedure is characterized by the use of iron pentacarbonyl and ammonia as the starting materials.
The product obtained by the reaction of iron pentacarbonyl and ammonia under high pressure of carbon monoxide has been found to accelerate markedly the formation of form-amide from carbon monoxide and ammonia. The product comprises powder and brown liquor, and further the liquor consists of formamide, ammonium carbamate, urea and a minute quantity of an iron salt, among which urea seems most effective for the acceleration.
Synthetic Studies on Oxirane Compounds. I. Ammonolysis of 2,3-Epoxyl-3-pheny-1-propanol
Authors: Suami Tetsuo , Uchida Ichiro , Umezawa Sumio 
Published: July 2006

Abstract
1-Phenyl-1-amino-2, 3-propanediol, m. p. 90–91°, was obtained by ammonolysis of 2,3-epoxy-3-phenyl-1-propanol. Several derivatives of this compound were described.
A part of the cost of the present research has been defrayed from the Scientific Research Encouragement Grant from the Ministry of Education, to which the authors’ thanks are due.
Diphenylcarbazone as an Internal Indicator in Volumetric Analysis. III. Volumetric Determination of Thorium by Ammonium Molybdate
Authors: Deshmukh G S , Bokil Indumati 
Published: July 2006

Abstract
A simple volumetric method for the quantitative estimation of thorium as molybdate is described. This is based on the titration of aqueous thorium nitrate (or chloride) solution against standard ammonium molybdate in presence of ethanol by using diphenyl-carbazone as the internal indicator. Under specified operative conditions, normal thorium molybdate is precipitated. The indicator behaves reversibly and the accuracy of the method is comparable with those obtained by classical procedures.
Studies on Serine Peptides. I. Optical Resolution of O-Benzyl-Dl-serine and Synthesis of Dl-Serine Peptides
Authors: Okawa Kenzi 
Published: July 2006

Abstract
The optically active O-Benzyl-l-serine was prepared in 78% yield by the enzymatic resolution of the N-acetyl derivative with Takadiastase.
Dl-Seryl-glycine was prepared by the N. C. A. method of Bailey and Dl-seryl-l-leucine was synthesized by the Fischer’s acid chloride method respectively.
As was expected, it was found that O-benzyl-serine can be utilized as the starting material in the peptide syntheses.
Hydrazinolysis of Peptides and Proteins. II. Fundamental Studies on the Determination of the Carboxyl-ends of Proteins
Authors: Akabori Shiro , Ohno Ko , Ikenaka Tokuji , Okada Yoshimi , Hanafusa Hidesaburo , Haruna Ichiro , Tsugita Akira , Sugae Kin-ichi , Matsushima Taijiro 
Published: July 2006

Abstract
1. Fundamental experiments on the hydrazinolysis method, a method for characterization of C-terminal amino acids of proteins, were carried out.
2. Amino acids were found to decompose to various extents by heating with anhydrous hydrazine.
3. Amino acid hydrazides were hydrolysed about 1% or less by heating with anhydrous hydrazine (ca. 99%) for ten hours. Hydrolyses of them in neutral and slightly acidic solutions at room temperature are negligible, but in alkaline solution the extent of hydrolyses are somewhat greater though less than 0.2% in five hours in 1% bicarbonate solution.
4. Procedures for separating free amino acids from amino acid hydrazides as DNP-derivatives with or without treatment of iso-valeraldehyde prior to dinitrophenylation were reinvestigated thoroughly.
5. Some experiments on the hydrazino-lyses of peptides were done.
6. Fundamental investigations of the characterization of the mode of linkage of monoaminodicarboxylic acids in peptide chains by the hydrazinolysis method indicate its availability.
7. Standard methods for quantitative estimation of C-terminal amino acids or proteins are established based upon the results obtained by the present investigation.
8. Brief consideration on the mechanism of the hydrazinolysis was described and the scope of this method was discussed in conection with that of the carboxypeptidase method
Methylhydropolysiloxanes from Cohydrolysis of Methylhydrochlorosilanes and Methylchlorosilanes
Authors: Okawara Rokuro , Sakiyama Minoru 
Published: July 2006

Abstract
1) The low boiling fraction of siliconmethylchloride reaction was cohydrolyzed with the three kinds of methylchlorosilane and the methylhydropolysiloxanes, MM′, M′-D′DM′, M′D2M′3T and M′2TD′M′, have been prepared and characterized.
2) A complete series of linear methylhydropolysiloxanes, MD′nM having three to eight silicon atoms have been prepared and characterized from the cohydrolyzate of methyldichlorosilane and trimethylchlorosilane.
Ultraviolet Spectrophotometric Determination of Iron
Authors: Ishibashi Masayoshi , Shigematsu Tsunenobu , Yamamoto Yuroku , Tabushi Masayuki , Kitagawa Toyokichi 
Published: July 2006

Abstract
Absorption has been investigated for the solution of ferric perchlorate at various acidities in ultraviolet region and the existence confirmed of two isosbestic points at 223 mμ and 271 mμ. A method of spectrophotometric determination for iron has been proposed which involves the measurement of absorbance at the isosbestic point. Effects of temperature, acidity and diverse ions have been examined and the purity of iron base alloys has been determined by differential method.
Study on Zinc Oxide-Chromium Oxide Catalyst. II. Variation of Catalytic Activity for Methanol Decomposition with Addition of Chromia and Structural Dependence of Activity
Authors: Uchida Hiroshi , Ogino Yoshisada 
Published: July 2006

Abstract
From the results on the rates of methanol decomposition by the catalysts of different zinc oxide-chromium oxide compositions the rate (ν) of evolution of carbon monoxide per unit surface area of catalyst has appeared to be represented by the following equation
v=ae^αE·e^-E/kT
where a and α are constants applicable throughout the two series of catalysts produced by different methods. The activation energy (E) of the methanol decomposition attains to a minimum value when the catalyst has a certain chromia content. It is directly related with the activation energy of electrical conductivity of the catalyst in hydrogen at high temperature but neither with the concentration of n-type conductivity centres nor with that of p-type conductivity centres. At such temperatures, the adsorption of hydrogen on the oxygen atoms in the surface was considered to participate in the electrical conductivity.
Moreover, the results on determinations of the surface area and the excess oxygen content, together with the information about the structure obtained from diffraction patterns, reveal that there is a similarity in tendency between the increase of concentration of zinc chromite spinels in the catalyst surface and the decrease of activation energy of the decomposition. This relation can be explained from the view of E. Cremer on the compensation effect. The quantity of chromia added in excess of the proper amount for combination with zinc oxide causes both the surface area and the activation energy to increase towards those of chromia alone.
The addition of chromia has therefore a considerable influence upon the activation energy of methanol decomposition, which is quite contrary to what G. Natta described on the methanol synthesis.
Synthetic Amphoteric Polypeptide. II. Synthesis and Some Properties of a Reversibly Contractile Amphoteric Polypeptide
Authors: Yuki Heimei , Sakakibara Shumpei , Taki Toshio , Tani Hisaya 
Published: July 2006

Abstract
1. A reversibly contractile amphoteric polypeptide, copoly-26 : 26 : 1-(l-glutamic acid, l-lysine, Dl-cystine), was synthesised.
2. The foil of this polypeptide contracted at its isoelectric region and extended in both acidic and basic media. This extension and contraction was pH-dependent and fully reversible.
3. The load-elongation relation of the strip of this foil was measured in aqueous media using the load up to about 2,000 times the dry weight per 1 cm. of length of the strip. This relation was linear in this range.
4. The temperature-elongation relation was measured in aqueous media at 20–50°C. From the data it was concluded that, at a given temperature, the internal energy and entropy increased with the elongation of the strip.
5. The change of length of the strip in aqueous media, containing hydrochloric acid, sodium hydroxide, sodium chloride and some other neutral salts individually or in pairs, was measured. Some peculiar and interesting phenomena were observed.
Determination of Nitrate Nitrogen by the Strong Phosphoric Acid-Iodic Acid Decomposition Method
Authors: Ohashi Shigeru , Makishima Hiroshi 
Published: July 2006

Abstract
(1) The strong phosphoric acid-iodic acid decomposition method for the determination of nitrogen in organic compounds, which was already reported, has been extended to the analysis of nitrate nitrogen.
(2) In a reaction vessel salicylic acid was nitrated by heating with the sample and concentrated sulfuric acid and the product was reduced by heating with sodium thiosulfate. The resulting mixture was decomposed by heating with a mixture of strong phosphoric acid and potassium iodate. The liberated Kiba for his interest and encouragement, nitrogen was measured gas-volumetrically.
(3) In the presence of nitrate, ammonium defrayed from a grant given by the Ministry salt, and urea, the total nitrogen and the nitrogen except nitrate could be determined are due. by the strong phosphoric acid-iodic acid decomposition method, respectively.
The Adsorption of Water Vapor by Gelatin-Detergent Complexes
Authors: Tamaki Kunio , Tamamushi Bun-ichi 
Published: July 2006

Abstract
1. The adsorption of water vapor by gelatin-dodecyl sulfate ion complexes and gelatin-dodecyl ammonium ion complexes has been measured.
2. The adsorption of water vapor by both those kinds of complexes has been found to be less than that by pure gelatin.
3. The amount of adsorption on the gelatin-dodecyl sulfate ion complexes is always smaller than on the gelatin-dodecyl ammonium ion complexes, and this fact indicates that the former complexes are more hydrophobic than the latter.
4. The adsorption isotherms have been interpreted by the B.E.T. theory and the amount of the first monolayer adsorption has been calculated.
5. In both types of complexes, there is a certain parallel correlation but no stoichiometric relationship between the reduction in the amount of the first monolayer adsorption and the amount of combined detergent.
Heats of Dilution of Polyvinylalcohol Solutions. II
Authors: Amaya Kazuo , Fujishiro Ryoichi 
Published: July 2006

Abstract
Heats of mixing of 1,4- and 1,3-butandiols with water and heats of dilution of polyvinylalcohol of different acetyl contents were measured.
The results obtained for the two butanediols and water system were compared with the results for ethylalcohol-water system and for polyvinylalcohol-water system (reported in the previous paper) and it was found that the apparent interaction parameter of these substances with water decreases and becomes more normal as the degree of polymerization becomes larger. The interaction parameter for polyvinylalcohol of different acetyl content with water first increases and then (through max.) decreases as the content of acetyl radical increases.
All these results are consistently explained from the standpoint of intra-molecular or inter-segmental association.
Measurement of Solubilities of Sparingly Soluble Liquids in Water and Aqueous Detergent Solution Using Non-ionic Surfactant
Authors: Hayashi Makoto , Sasaki Tsunetaka 
Published: July 2006

Abstract
1. The solubility of iso-amyl alcohol, n-butyl alcohol and benzene were determined by the titration using the surfactant, Tween 80.
2. In the case of iso-amyl alcohol and n-butyl alcohol, the relation between the turbidity and the quantity of solute in surfactant solution is linear, and the solubilitylimits are both lower than the solubilities in pure water in the dilute region of the surfactant. This makes the determination of their solubility easy and accurate both in pure water and aqueous solution of the detergent.
3. The above method cannot be applied directly for the determination of the solubility of benzene. Ethyl alcohol-Tween 80 mixture is used instead of Tween 80 to overcome this difficulty.
4. The solubilities obtained by this method are accurate enough compared with other methods, in the case of iso-amyl alcohol and n-butyl alcohol, possible error being estimated to be 0.4%. In benzene, the error is somewhat larger, but is in good agreement with the values of the literature.
Spectrochemical Study of Microscopic Crystals. XIII. The Structure of Wolffram’s Red Salt, Pt(NH2·C2H5)4Cl3·2H3O and a Related Compound
Authors: Yamada Shoichiro , Tsuchida Ryutaro 
Published: July 2006

Abstract
Polarized absorption spectra of Wolffram’s red salt, Pt(EA)4Cl3·2H2O, and a related compound, Pt(EA)4Br3·2H2O, EA being ethylamine, have been determined by Tsuchida-Kobayashi’s microscopic method in the regions covering from 2400 to 7500 Å.
Both the compounds, which are supposed to be formulated by [Pt(EA)4][Pt(EA)4X2]X4·4H2O, have been found to show an absorption band that has not been observed with either of the components alone. Moreover, this band is strongly polarized along the needle axis. These relationships may be understood on the assumption that the crystals of these compounds involve infinite chains of ---X—PtIV—X---PtII---X—PtIV—X--- along the needle axis, X being chlorine or bromine.
The new absorption at the longer wavelength may be considered as a charge transfer band along the infinite chains as assumed above.
Partition Equilibrium of Cumene Hydroperoxide between Water and Cumene
Authors: Yamada Shigehiko , Kat\={o} Tokio 
Published: July 2006

Abstract
The partition equilibrium was investigated in relation to the steam-blowing and stripping, during and after the hydroperoxidation of cumene, and the following results were obtained.
1. Equilibrium constant K does not depend on the concentration of CHP within the limit of experimental error, but it depends on the temperature.
2. The partition constant, K approximately satisfies the following formula,
K=1.3_4×10^-4e^1580/T.
3. The heat of transference of 1 mol. of cumene hydroperoxide from cumene solution into water under the equilibrium condition, was determined as 3.16 k cal./mol.
Some Optical Properties of Zinc Sulfide Phosphors Doubly Activated with Copper and Manganese
Authors: Shionoya Shigeo 
Published: July 2006

Abstract
Optical properties of ZnS: (Cu+Mn) phosphors have been extensively studies with the purpose to investigate the phenomena of sensitized luminescence in photoconductive phosphors. Spectra of emission, absorption and axcitation, thermoluminescence and photo-conductivity were measured. It was confirmed from the measurement of excitation spectra that the manganese emission is really sensitized by coper behaving as a sensitizer. Some interesting phenomena ascribe to this sensitization were found in the measurements of thermoluminescence and photoconductivity. The mechanism of the sensitization was discussed exhaustively. It appears reasonable to conclude tentatively in the present situation that the resonance transfer rather than the photoelectron transfer is the predominant mechanism.
Tie Line Correlation for Ternary Liquid Equilibria
Authors: Ishida Kiyoharu 
Published: July 2006

Abstract
The various methods for obtaining straight lines were examined for the tie-line data investigated at several temperatures near the critical solution temperature for binary mixtures of the solute and the solvent, and the following results were obtained.
1. The Hand plot and the Othmer and Tobias plot which are useful for the systems containing one partially miscible pair are unsatisfactory for the systems containing two partially miscible pairs.
2. The method proposed by Brown and the method by Conway and Philip which have been said to be applicable for the systems containing the formation of two pairs of partially miscible liquids do not give good results for the systems at temperatures near the critical solution temperature for binary mixtures of the solute and the solvent.
3. If a plot is made of the logarithm of the ratio of the concentration of the diluent in the diluent phase to the concentration of the solvent in the solvent phase against the logarithm of the concentration of the diluent in the diluent phase, a straight line will be obtained not only for systems containing two partially miscible pairs, but also for systems containing one partially miscible pair.
Constituents of the Mucilage of Gloiopeltis Furcata
Authors: Hirase Susumu , Araki Choji , It\={o} Toshiya 
Published: July 2006

Abstract
1. The mucilage of Gloiopeltis furcata has been investigated by the complete methanolysis method.
2. 3,6-Anhydro-l-galactose dimethylacetal and methyl d-galactoside have been isolated from the methanolysate. In addition, l-galactose has also been isolated in the form of the crystalline Dl-galactose diethylmercaptal.
3. The yields of the isolates have indicated that the mucilage used contains 3, 6-anhydro-l-galactose, d-galactose and l-galactose in the approximate molar ratio of 8:12:1.
Studies on Azeotropic Mixtures. I. General Considerations
Authors: Yoshimoto Toshio , Mashiko Yo-ichiro 
Published: July 2006

Abstract
The general expression for the azeotropeforming power of binary solution has been derived and the conditions for azeotrope existence presented. The quasi-crystalline model has been adopted for the solution, which is assumed to be a strictly regular solution at an azetropic point and an explicit representation for interaction energy of component molecules introduced.
Azeotropic mixtures have been grouped into four classes according to the type of molecular interaction and the azeotrope-forming power (molecular interchange energy) has been calculated and discussed.
THE CRYSTAL STRUCTURE OF THIOUREA
Authors: Demény László , Nitta Isamu 
Published: July 2006

Abstract
Using the Laue photographic and X-ray spectrometric methods the crystal structure of thiourea was investigated. The unit of structure built upon the simple orthorhombic translation group Γ0, is of the dimensions a=5.47, b=7.64 and c=8.54 A., and contains four chemical molecules of CSN2H4. Thus the density is 1.408. The plausible space group being Vh16, a possible atomic arrangement, neglecting H atoms, was found to be as follows:
(Remark: Graphics omitted.) with x=0.300, y=0.164 and z=0.144. The molecule has the symmetry of Cs, i.e. it has one plane of symmetry in it. In such a model, the distance. C–S is 1.81 Å., and that C–N is 1.39 Å. Discussion was also made upon its crystalline and molecular structures in comparison with those of urea.
MICRO-IDENTIFICATION OF ISOMERS AND HOMOLOGUES IN THEIR MIXTURE. I. THREE ISOMERIC XYLENES
Authors: Migita Masao 
Published: July 2006

Abstract
Methods to detect and identify the three isomeric xylenes in their mixture, especially in limited quantity, are given.
1. m-Xylene and p-xylene, even in minute quantity, can be successfully identified as their trinitro-derivatives, by their colour-reactions in alcoholic or acetone solution toward alkali, or by the optical properties of their crystals. These two methods leave little to be desired.
2. o-Xylene is identified microscopically as sodium sulphonate, but in case of a mixture very poor in o-xylene, we can not expect a result of high sensitivity by this method.
3. The technical method to separate p-xylene from its isomers, based on its insolubility in ordinary conc sulphuric acid, is tested and shown to be of little value.
ON ENANTIOTROPY AND MONOTROPY. II
Authors: Nagasako Noboru 
Published: July 2006

Abstract
1. The affinity of transition and the heat of transition from diamond to graphite and from white phosphorus to red phosphorus have been evaluated on the basis of the Nernst’s theorem and it has been made clear that they are monotropic under the atmospheric pressure. The former case will probably be enatiotropic under high pressure, whereas the latter case will remain monotropic even under high pressure.
2. An approximation formula for the estimation of the affinity of transition has been derived and by means of which the dimorphisms in ethyl ether, iodine monochloride, benzophenone, phthalide, bromonitrobenzene, acetamide, monochloracetic acid, nitro-p-toluide and erythrite have been estimated to be monotropic.
ON THE DEVIATION OF GASEOUS MIXTURES FROM DALTON’S LAW OF PARTIAL PRESSURES DUE TO CHEMICAL CAUSES. III. HYDROGEN CHLORIDE AND METHYL ALCOHOL
Authors: Shidei Jitaro 
Published: July 2006

Abstract
1. The gaseous pressures of methyl alcohol of several amounts have been measured at temperatures ranging from 70° to 130°C. It is shown that the pressures measured when plotted against the weights contained in a litre, to which the weights actually taken were converted, give a series of excellent straight lines which nearly pass through the origin of the co-ordinates.
2. The pressure of gaseous hydrogen chloride have been measured over the temperature range, 50° to 130°C. These are shown to be in good agreement with those which are calculated by van der Waals’ equation, changes of his constants with temperature being allowed for by van Laar’s equations.
3. Measurements have been carried out of the deviation from Dalton’s law at temperatures between 70° and 130°C. in mixtures of several proportions of hydrogen chloride and methyl alcohol. The deviation is discussed from the assumption of the existence of the two reactions:-
CH3OH+HCl \ightleftarrows CH3OH·HCl
CH3OH·HCl \ightleftarrows CH3Cl+H2O.
ELECTRODE POTENTIAL OF NICKEL. PART III. MECHANISM OF THE RE-ACTIVATION OF THE PASSIVE STATE OF NICKEL
Authors: Murata Kwanji 
Published: July 2006

Abstract
1. The re-activation by the action of the hydrogen of the nickel electrode, which has once been affected by oxygen, has been explained on the ground that nickel itself behaves as a catalyser, on the combination of oxygen and hydrogen.
2. It has been thermodynamically deduced that the equilibrium conditions in the nickel half-cells are expressed by pH2×aNi++×aOH−2=10−19.56 from which it has been calculated that when the activity-product (aNi++×aOH−2) attains the solubility product of nickel hydroxide, the corresponding partial pressure of hydrogen is 0.22 atm. This is the critical pressure above which only equilibrium can be established and if the partial pressure of hydrogen is less than this value the nickel will tend to go into solution accompanied by the precipitation. of nickel hydroxide until pH2 rises to the critical pressure.
3. On the above deduction, the changes with time in the electromotive force of the cells which were-prepared in the atmosphere of hydrogen or of nitrogen have been explained.
4. The abnormal behaviour of the nickel electrode observed by previous investigators has also been discussed on the same basis of proof.
5. The changes in free energy of various reactions have been calculated.