EPR, proton and carbon-13 ENDOR studies of a quintet state 13C-labeled galvinoxyl-type tetraradical

B Kirste, M Grimm, H Kurreck

文献索引：Kirste, Burkhard; Grimm, Michael; Kurreck, Harry Journal of the American Chemical Society, 1989 , vol. 111, # 1 p. 108 - 114

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被引用次数: 24

摘要

Abstract: The syntheses of unlabeled and fourfold I3C-labeled tetraphenylmethane tetrakisgalvinols are described. Different paramagnetic species, Le., a doublet-state monoradical, a triplet-state biradical, a quartet-state triradical, and a quintet-state tetraradical, can be generated by selective oxidation and identified by EPR,'H, and I3C ENDOR spectroscopy. The zero-field splitting parameter D is about 1.1 mT for the ...