I-127 MOSSBAUER-SPECTRA OF DIPHENYLIODONIUM HALIDES

被引:5
作者
IKEZAWA, H
TAKAHASHI, M
TAKEDA, M
ITO, Y
机构
[1] TOHO UNIV, FAC SCI, DEPT CHEM, FUNABASHI, CHIBA 274, JAPAN
[2] UNIV TOKYO, NUCL SCI & TECHNOL RES INST, TOKAI, IBARAKI 31911, JAPAN
关键词
D O I
10.1246/bcsj.66.1959
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The I-127 Mossbauer spectra have been obtained at 20 K for the diphenyliodonium halides, Ph2IX (X = Cl, Br) and their derivatives, (p-R-C6H4) IPhBr (R=CH3, CH30, Cl, COOH and N02). The valence electron populations of iodine are determined by the interactions with carbon atoms but not with bridging halogen atoms. The iodine-carbon bonds, having large p-character, are affected scarcely by the substituents at the para-position of the phenyl group. The large eta values for those compounds are explained in terms of a lone pair electrons on iodine(III) atoms.
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页码:1959 / 1962
页数:4
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