ELECTRON RESONANCE STUDIES OF PERCHLORODIPHENYLMETHYL AND PERCHLOROTRIPHENYLMETHYL FREE RADICALS

被引：49

作者：

FALLE, HR

LUCKHURS.GR

HORSFIEL.A

BALLESTE.M

机构：

[1] Varian Research Laboratory, 8008 Zurich

[2] Varian Research Laboratory, Walton-on-Thames, Molesey Road

[3] Departamento de Qulmica Organica, Patronale Juan de la Ciena, The University, Barcelona

[4] Department of Chemistry, University of McGill, Montreal, Que.

[5] Department of Chemistry, The University, Southampton

来源：

JOURNAL OF CHEMICAL PHYSICS | 1969年 / 50卷 / 01期

关键词：

D O I：

10.1063/1.1670787

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The stable free radicals perchlorodiphenylmethyl, (C6Cl 5)2ĊCl, and perchlorotriphenylmethyl, (C 6Cl5)3C, have been examined by electron resonance. In solution, the isotropic α-chlorine hyperfine splitting in PDM was found to be 6.08 Me/sec. Splittings from 13C in natural abundance at the methyl carbon (about 100 Me/sec) and at additional phenyl-carbon sites were measured for both radicals. By incorporating PDM in the liquid crystal p-azoxyanisole, the principal values of the anisotropic hyperfine coupling tensor of the a chlorine were derived and found to be A 11= -9.2, A22= -18.9, and A33 = 47.2 Mc/sec. The variation with temperature of the degree of ordering of the radicals in the nematic mesophase was determined.

引用

页码：258 / &

共 26 条

[1]

BALLESTE.M, 1966, B SOC CHIM FR, P7

[2] PERCHLORODIPHENYLMETHYL (PDM) CARBON FREE RADICAL OF REMARKABLE STABILITY [J].