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Volume 2, Issue 12
Displaying 1-32 of 32 articles from this issue
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Akira Ohyoshi, Shunichi Hiraki, Hideo Kawasaki1973 Volume 2 Issue 12 Pages 1229-1232
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe thermal decomposition reaction of halogenopentaammineruthenium(III) complexes was studied by the techniques of thermogravimetry, differential thermal analysis and evolved gas analysis. The complexes were dissociated by two different mechanisms:(a) those in which the Ru(III) was reduced by halide ion; and (b) those in which the Ru(III) was reduced by ammonia molecule. Which mechanism is preferably selected for a thermal decomposition reaction, it seems to be determined by the composition of ligands in the complexes.View full abstract -
Ken’ichi Takeo, Kenji Hirose, Takashi Kuge1973 Volume 2 Issue 12 Pages 1233-1236
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSCarbon-13 chemical shifts for α-, β-, and γ-cyclodextrins and its peracetates, and also amylose, in several solvents, are reported with full assignment. It was found that the steric effects imposed by cyclic nature of the dextrins on the conformation of the glucopyranose residues in the dextrins are clearly reflected in their spectra.View full abstract -
Shigeru Ikuta, Kenji Yoshihara, Takanobu Shiokawa, Masafumi Jinno, Yu ...1973 Volume 2 Issue 12 Pages 1237-1240
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPhotoelectron spectra of cyclohexane, cyclopentane, n-hexane and n-pentane have been studied. The vibrational structures of cyclohexane parent ion were clearly observed. The vibrational spacing is about 1160 cm−1 which can be assumed due to the C–C stretching vibrations. This spectrum was compared with the breakdown curves by charge exchange.View full abstract -
Tamotsu Fujisawa, Kikuo Sugimoto, Hiromichi Ohta1973 Volume 2 Issue 12 Pages 1241-1242
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSReduced iron is a very effective reagent for deoxygenation of various thiolsulfonates and sulfoxides to give the corresponding disulfides and sulfides, respectively.View full abstract -
Tadao Shingaki, Noboru Torimoto, Masao Inagaki, Toshikazu Nagai1973 Volume 2 Issue 12 Pages 1243-1246
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIt was found that N,N-dichloromethanesulfonamide (I) reacted with cyclic ethers and hydrocarbons in the presence of copper to give the N-substituted methanesulfonamides (II) and methanesulfonamide. The non-stereospecific formation of II in the reaction of I with trans- and cis-1,4-dimethylcyclohexanes, contrary to the stereospecific formation of II in the reaction of methanesulfonyl azide with the hydrocarbons, gives a support to a radical mechanism.View full abstract -
Seiichiro Matsumoto, Yoichiro Sato, Nobuo Setaka, Masaru Goto1973 Volume 2 Issue 12 Pages 1247-1250
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSMass spectral analysis was made of gases thermally desorbed from oxidized and hydrogenated surfaces of diamond up to 960°C. The chemisorbed oxygen desorbs as CO and CO2, while hydrogen as H2. The desorption in the form of CO occurs at least in two steps.View full abstract -
Katsuhiro Tamura, Tatsuya Imoto1973 Volume 2 Issue 12 Pages 1251-1254
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe charge–transfer absorption spectra of the title compound have been measured for seven solvents at 25°C over the pressure range 1–1960 kg/cm2. The effect of the solvents on the shift of λmax with pressure was remarkable in a series of alcohols. The λmax for methanol and ethanol shifted to the red, while for the other alcohols it shifted to the blue. This may be one of the interesting behavior based on the hydrogen bonding between the solute and the solvents.View full abstract -
Takashi Ibusuki, Yasukazu Saito1973 Volume 2 Issue 12 Pages 1255-1258
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSC-13 nmr parameters for a series of Pt(II)-olefin complexes and β-methoxyalkylmercuric chlorides are reported and discussed in terms of alkyl substituent effects on the direct metal–carbon couplings and others in order to clarify the property of Pt–C bonding by comparing with Hg–C bonding.View full abstract -
Meiseki Katayama, Akiko Katayama, Hiroyuki Itoh, Ryoichi Shimada, Taka ...1973 Volume 2 Issue 12 Pages 1259-1260
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe γ-irradiated 3,3,4,4-cyclopentanone-d4 was studied at low temperatures by means of ESR. The analysis of spectra and INDO calculations have indicated the presence of the anion radical.View full abstract -
Kazuhiko Ishizu, Hiroshi Nagai, Kazuo Mukai, Masahiro Kohno, Takamitsu ...1973 Volume 2 Issue 12 Pages 1261-1264
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe ENDOR spectrum of t-butylphenylnitroxide were observed in either toluene or ethyl alcohol, and the solvent effects on the proton hyperfine coupling constants were investigated. Based on the Allendoerfer and Maki’s correction, the observed ENDOR intensities were compared with those calculated from the electron spin–spin relaxation time, T2.View full abstract -
Akira Ohyoshi, Shunichi Hiraki, Tomio Odate, Susumu Kohata1973 Volume 2 Issue 12 Pages 1265-1268
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe deaquation-anation reaction of [Ru(H2O)(NH3)5]X3 type complexes in solid state, as shown by the equation, [Ru(H2O)(NH5)3]X5 (s) → [RuX(NH3)5]X2 (s) + H2O (g), where X=NO3 and Br was investigated by means of the differential thermal analysis (DTA) and of the thermogravimetry (TG). The activation energies in the deaquation-anation processes of the nitrate and bromide were calculated as 17.5 and 23.0 kcal/mol by the isothermal rate study, and as 19.0 and 26.8 kcal/mol by the Freeman–Carroll analysis.View full abstract -
Motosuke Naoki, Atsuro Kokubo, Takuhei Nose1973 Volume 2 Issue 12 Pages 1269-1270
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe β relaxation processes of chlorinated polyethylene vulcanizate (CPE) and polyvinylacetate(PVAc) were investigated by dielectricity in a frequency range of 30∼3×105 Hz, a temperature range of −50∼20 °C and a pressure range of 1∼600 Kg/cm2. Both superpositions on temperature and pressure were possible for CPE, but not for PVAc, and the behaviors of the activation volume ΔV≠ in CPE and PVAc were significantly different from each other.View full abstract -
Yasuhiko Shirota, Kazuo Yoshida, Takashi Nogami, Hiroshi Mikawa1973 Volume 2 Issue 12 Pages 1271-1272
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe thermal [2+2] cycloaddition reaction of vinylferrocene with tetracyanoethylene was found to occur under very mild reaction conditions in a non-polar solvent or even in solid states. Stabilization of the α-ferrocenyl carbonium ion in the zwitterionic intermediate or the transition state of that character is suggested to contribute to the facilitation of the reaction.View full abstract -
Hiroshi Nakanishi, Osamu Yamamoto1973 Volume 2 Issue 12 Pages 1273-1278
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS13C NMR spectra of cyclooctatetraene dimer (III) were measured at various temperatures. The complete line shape analysis of temperature dependent spectra was made using the modified Bloch equation method. The activation parameters of the degenerate Cope rearrangement were obtained and were compared with the results obtained by the conventional coalescence temperature method.View full abstract -
Fujio Tanaka, Jiro Osugi1973 Volume 2 Issue 12 Pages 1279-1282
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe pressure dependences of the fluorescence yields for anthracene, 1-, 2-, 9-methylanthracene, 1-, 2-, and 9-chloroanthracene were obtained in n-hexane at room temperature up to 3000 kg/cm2.
Results were interpreted in terms of a change of Franck–Condon factor in the intersystem crossing rate.View full abstract -
Yasuo Ueno, Isamu Sano1973 Volume 2 Issue 12 Pages 1283-1288
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe coagulation rate of an aqueous salt solution aerosol of Na2SO4 has been determined in terms of number and mass concentration under various conditions, with the finding that the rate constant in mass concentration might be useful as a measure of coagulation rate. Some examples of its application are described in detail.View full abstract -
Tsuyoshi Shishibori, Takashi Fukui, Takayuki Suga1973 Volume 2 Issue 12 Pages 1289-1292
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe incubation of terminally modified squalene 2,3-oxide analogs with the enzyme preparation of hog liver yielded the corresponding lanosterol analogs, respectively, at different conversion rates. The interaction of 2,3-oxidosqualene cyclase with the substrates has thus been found to be influenced by the bulk of the terminal moiety.View full abstract -
Akio Furusaki, Haruhisa Shirahama, Takeshi Matsumoto1973 Volume 2 Issue 12 Pages 1293-1294
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe chirality of illudin S has been unambiguously determined as 1(2′S, 3′R, 6′R) by applying the anomalous dispersion method to isoilludin S triacetate 2.View full abstract -
Taitiro Fujinaga, Satoshi Okazaki, Takeshi Yamada1973 Volume 2 Issue 12 Pages 1295-1296
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA new electroanalytical method, for the determination of trace quantities of metal ions, has been developed by the combination of direct coulopotentiography with preliminary column electrolysis. The new method is more sensitive than the direct method; the sensitivity reaches down to 10−8M.
The present method is also applicable to the practical automated trace analysis of the flowing samples.View full abstract -
Nobuhiko Ishibashi, Akinori Jyo, Koichiro Matsumoto1973 Volume 2 Issue 12 Pages 1297-1298
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPerchlorate, thiocyanate, 1-naphthalenesulfonate, hydrogenphthalate and salicylate ion-selective electrodes with polyvinyl chloride membranes containing the ion associate and plasticizer were prepared. The electrodes showed a Nernstian response and had high selectivities for the objective anions in the presence of acetate, bromide or chloride.View full abstract -
Yasuo Oshiro, Yasuhiko Shirota, Hiroshi Mikawa1973 Volume 2 Issue 12 Pages 1299-1302
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIt was found for the first time that N-vinylindole was copolymerized with such electron-accepting monomers as fumaronitrile or diethyl fumarate to yield 1:1 alternating copolymers by photopoirradiation. The initiation process of the photolymerization was suggested to involve the charge-transfer or probably electron transfer from N-vinylindole to the electron-accepting monomer in the electronically excited state.View full abstract -
Setsuo Takamuku, Katsuyoshi Nakamura, Kenji Nagaoka, Hiroshi Sakurai1973 Volume 2 Issue 12 Pages 1303-1306
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe structure of the C7H7+ ion formed by γ radiolysis of cycloheptatriene vapor has been investigated by an ion-trapping with toluene-d8 or dimethylamine. The C7H7+ ion was shown to be mainly a rearranged benzyl type while a tropylium ion was also trapped with dimethylamine in a low yield.View full abstract -
Takeo Taguchi, Mineo Nishi, Kenzo Watanabe, Teruaki Mukaiyama1973 Volume 2 Issue 12 Pages 1307-1310
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIt was found that 2-alkyl-2-(4-pyridyl)-1,3-dithiane [II] is obtained in fairly good yield by the reaction of 2-alkyl-2-lithio-1,3-dithiane with pyridine followed by the subsequent oxidation with p-benzoquinone or air. N-Acyl-1,4-dihydropyridine derivative [III] was isolated by treating the adduct [I] of 2-alkyl-2-lithio-1,3-dithiane and pyridine with acyl chloride. Further, it was found that 2,2′-dipyridyl is obtained in 74% yield by refluxing 2-benzyl-2-lithio-1,3-dithiane with excess amount of pyridine in tetrahydrofuran.View full abstract -
Ryoko Matsuzaki, Atsuko Sofue, Yuzo Saeki1973 Volume 2 Issue 12 Pages 1311-1314
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe modification of Sb2O3 formed by the thermal decomposition of Sb8O11Cl2 varied with the method of preparing Sb8O11Cl2. Cubic Sb2O3 was obtained by the thermal decomposition of Sb8O11Cl2, which was prepared by decomposing Sb4O5Cl2, below 560°C.View full abstract -
Norio Kobayashi, Akiko Osawa, Tamotsu Fujisawa1973 Volume 2 Issue 12 Pages 1315-1318
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSDithiobis(carbonyl chloride) (I) was synthesized for the first time by the hydrolysis of bis(trichloromethyl) disulfide in concentrated sulfuric acid. Treatment of I with amines and phenels gave bis(carhamoyl) disulfides (III) and bis(oxycarbonyl) disulfides (IV), respectively.View full abstract -
Hiroshi Yoshioka, Kazumi Nakatsu, Motomu Sato, Takashi Tatsuno1973 Volume 2 Issue 12 Pages 1319-1322
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe molecular structure of the title oligopeptide has been determined by X-ray diffraction methods. The dihydrate crystals contain two independent molecules in the unit cell, and they have a quite similar conformation. The configuration of the two chlorine atoms around the Cβ–Cγ bond of the pyrrolidine ring is nearly gauche. Each molecule contains a β-loop of α-U-folding type.View full abstract -
A. C. Jain, B. N. Sharma1973 Volume 2 Issue 12 Pages 1323-1326
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSGenistein 1 when heated with prenyl bromide in the presence of methanolic methoxide yielded 7,4′-di-O-prenyl-(2), 6,8-di-CC-prenyl-(3) and 6-C-prenyl-(4) qenisteins. Structures of these compounds were established by NMR spectra of themselves and their derivatives. Oxidative cyclisation of (4) with DDQ afforded natural alpinum isoflavone (6); whereas that of (3) gave a mixture of natural osajin (8) and warangalone (7) which were separated by chromatography and identified by mass spectra.View full abstract -
Seishi Yajima, Kiyohito Okamura, Toetsu Shishido1973 Volume 2 Issue 12 Pages 1327-1330
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSOxide glasses in the Ln–Al–O system were prepared with the molar ratio of Ln2O3:Al2O3 of 10:1 to 1:10 for all the lanthanoids and yttrium by an impact quenching technique. Each quenched material was examined by polarizing microscope, X-ray diffraction and electron diffraction. The electron diffraction patterns show diffuse halos characteristic of an amorphous state.View full abstract -
Seishi Yajima, Kiyohito Okamura, Toetsu Shishido1973 Volume 2 Issue 12 Pages 1331-1334
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSNew compounds with approximate formulas, La2O2·7Al2O3, Pr2O3·7Al2O3, Nd2·8Al2O3 and Sm2O3·7Al2O3, have been obtained through melting by arc plasma flame and separated into their own single phases by a proper chemical treatment. All of the compounds have the β-Al2O3 type structure. Excepting only La2O3·7Al2O3, these compounds have the β-Al2O3, type structure at temperatures higher than 1500°C.View full abstract -
Takashi Tsuji, Shinya Nishida1973 Volume 2 Issue 12 Pages 1335-1338
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe cycloadducts of dispiro[2.2.2.2]deca-4,9-diene I to dimethyl trans,trans-muconate II formed by way of the singlet diradical Intermediate exhibited CIDNP signals In spite of the absence of diffusive separation of the correlated radicals.View full abstract -
Takehiro Abe1973 Volume 2 Issue 12 Pages 1339-1342
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe interaction of p-dinitrobenzene with hydroxide ion in aqueous dimethyl sulfoxide was studied by visible spectroscopy. The formation of the p-dinitrobenzene anion-radical was initially found. From the time-dependence of the radical, the radical seems to be a precursor in the displacement of one nitro group.View full abstract -
Hayami Yoneda, Yoshiaki Nakashima, Ushio Sakaguchi1973 Volume 2 Issue 12 Pages 1343-1346
Published: December 05, 1973
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSAn argon ion laser has been used to partially phctoresolve tris(acetylacetonato)chromium(III), tris(3-nitroacetylacetonato)chromium(III), and tris(trifluoroacetylacetonato)chromium(III). The optical rotatory dispersion and the circular dichroism spectra of the optically pure enantiomers have been determined in the wavelength range of 400–650 nm.View full abstract
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