期刊：
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS,1997年122(1):307-312 ISSN：1042-6507
通讯作者：
Huang, TB
作者机构：
[Huang, TB] Cent China Normal Univ, Inst Organ Synth, Wuhan 430070, Peoples R China.;E China Univ Sci & Technol, Inst Pesticides & Pharmaceut, Shanghai 200237, Peoples R China.
通讯机构：
[Huang, TB] C;Cent China Normal Univ, Inst Organ Synth, Wuhan 430070, Peoples R China.
摘要：
Abstract Three pathways were observed in the reactions of Schiff bases of Thiohydrazides with P(NR2)3. (a) MeS-R2N exchange: MeS-C([dbnd]S)-NHN[dbnd]CHPh (1) reacted with P(NR2)3 led to new Schiff bases, R2N-C([dbnd]S)-NHN[dbnd]CH = Ph (2). (b) Cleavage of C[dbnd]S bond and the formation of P[dbnd]S bond: H2N-C([dbnd]S)-NHN[dbnd]CH = Ph (3) reacted with P(NR2)3 gave rise to the thiophosphoric amide. (Et2N)2P([dbnd]S)-NH-CH = N-N[dbnd]CH-Ph (4). (c) Formation of thiadiazole and triazole: Schiff bases 2a and H2N(MeS)C = N-N[dbnd]CH-Ph (6) reacted with P(NR2)3 respectively and produced 5-dimethylamino-2-phenyl-2,3-(2H)-1,3,4-thiadiazole (5) and 5-methylthio-2-phenyl-2,3-(2H)-1,3,4-triazole (7).
作者机构：
[Hu, LM; Liu, ZJ; Yan, JL] CENT CHINA NORMAL UNIV,DEPT PESTICIDE CHEM,INST PESTICIDAL CHEM,WUHAN 430070,PEOPLES R CHINA.;[Yan, JL] CENT CHINA NORMAL UNIV,CTR ANAL & TESTING,WUHAN 430070,PEOPLES R CHINA.
通讯机构：
[Yan, JL] C;CENT CHINA NORMAL UNIV,CTR ANAL & TESTING,WUHAN 430070,PEOPLES R CHINA.
期刊：
Chemical Physics Letters,1996年262(5):643-648 ISSN：0009-2614
通讯作者：
Zhao, X.
作者机构：
OKAZAKI NATL RES INST,INST MOL SCI,OKAZAKI,AICHI 444,JAPAN.;OSAKA UNIV,INST SCI & IND RES,IBARAKI,OSAKA 567,JAPAN.;CENT CHINA NORMAL UNIV,DEPT CHEM,WUHAN 430070,PEOPLES R CHINA.;[Zhao, XJ; Kitagawa, T; Mizutani, Y] Institute for Molecular Science, Okazaki Natl. Research Institutes, Myodaiji, Okazaki 444, Japan;[Zhan, CG] Institute for Molecular Science, Okazaki Natl. Research Institutes, Myodaiji, Okazaki 444, Japan, Department of Chemistry, Central China Normal University, Wuhan 430070, China
通讯机构：
[Zhao, X.] I;Institute for Molecular Science, Okazaki Natl. Research Institutes, 8-1 Mihoga-oka, Japan
摘要：
Ultraviolet resonance Raman (UVRR) spectra excited at 245 and 325 nm are reported for 1,4-benzoquinone and its 18O2 and d4 isotopomers. Depolarization ratios were determined for non-resonance Raman spectra excited at 647 and 441.6 nm and solvent effects were examined for the UVRR spectra. The UVRR bands at 1665 and 1639 cm-1, the latter of which exhibited a much larger 18O2 isotopic frequency shift than the former, are reassigned to ν2 (in-phase C=O/C=C stretches) and ν3 (out-of-phase C=O/C=C stretches), respectively, on the basis of the observed 18O2 and d4 isotope frequency shifts and unscaled ab initio vibrational analyses with the MP2 method using an extended basis set.
摘要：
Bubble attachment on ion exchange membranes during electrolysis in chlor-alkali cells is of great concern because it has a marked influence on the cell voltage. This paper reports a method to investigate the bubble effect on membranes during electrolysis. The method uses conventional electrochemical linear sweep voltammetry (LSV) and a four electrode system.
期刊：
Journal of Alloys and Compounds,1985年107(1):131-138 ISSN：0925-8388
通讯作者：
COMPANION, AL
作者机构：
HUAZHONG NORMAL UNIV,DEPT CHEM,WUHAN,PEOPLES R CHINA.;INDIANA UNIV PURDUE UNIV,DEPT CHEM,FORT WAYNE,IN 46805.;[COMPANION, AL] UNIV KENTUCKY,DEPT CHEM,LEXINGTON,KY 40506, USA.
通讯机构：
[COMPANION, AL] U;UNIV KENTUCKY,DEPT CHEM,LEXINGTON,KY 40506, USA.
摘要：
Extended Hückel molecular orbital calculations were carried out for 22-atom clusters simulating the b.c.c. forms of vanadium, chromium, iron and cobalt. In each study the Hiickel parameter K was optimized to reproduce the observed cohesive energy of the isolated metal. Results indicate that in all cases a hydrogen atom implanted in the cluster is more stable in a site of distorted tetrahedral symmetry than in a site of distorted octahedral symmetry, and that a hydrogen atom in either site is stabilized by an adjacent lattice vacancy. An inverse relationship is observed between the computed binding energies of hydrogen atoms in both tetrahedral and octahedral sites and the d electron repulsive potential.
