INTRAMOLECULAR SPIN-SPIN EXCHANGE IN CATION RADICALS OF TETRATHIAFULVALENE DERIVATIVES SUBSTITUTED WITH IMINO PYROLIDINE-AND PIPERIDINE-1-OXYLS

被引:45
作者
SUGIMOTO, T
YAMAGA, S
NAKAI, M
OHMORI, K
TSUJII, M
NAKATSUJI, H
FUJITA, H
YAMAUCHI, J
机构
[1] KYOTO UNIV, FAC INTEGRATED HUMAN STUDIES, DIV NAT ENVIRONM, KYOTO 606, JAPAN
[2] KYOTO UNIV, GRAD SCH HUMAN ENVIRONM STUDIES, KYOTO 606, JAPAN
关键词
D O I
10.1246/cl.1993.1361
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The ESR spectra of tetrathiafulvalene (TTF) derivatives substituted with imino pyrolidine- and piperidine-1-oxyls and their cation radicals were investigated. For the neutral TTF's the unpaired electron is localized at the nitroxide group. While, an intramolecular spin-spin exchange albeit weak occurs between the TTF cation radical and the nitroxide radical in the one-electron oxidized TTF's, and the ground spin state of the biradical is a singlet.
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页码:1361 / 1364
页数:4
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