ESR study of reactivity of the complex (η2-C60)Os(CO)(PPh3)2(CNBut) toward free radicals

被引：0
作者：
R. G. Gasanov
M. V. Tsikalova
E. V. Martynova
Yu. N. Novikov
机构：
[1] Russian Academy of Sciences,A. N. Nesmeyanov Institute of Organoelement Compounds
来源：
Russian Chemical Bulletin | 2008年 / 57卷
关键词：
fullerenes; complexes; radical reactions; spin-adducts; electron paramagnetic resonance; regiomers; addition and dimerization rate constants; competitive kinetics;
D O I：
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学科分类号：
摘要：
Addition of the ·P(O)(OPri)2, Me·, Et·, ·But, and Cl3C· radicals to the (ν2-C60)Os(CO)-(PPh3)2(CNBut) complex (1) was studied by ESR spectroscopy. The spectral parameters of the spin-adducts of these radicals with complex 1 were determined. The predominant direction of the attack by the ·P(O)(OPri)2, ·But, and Cl3C· radicals are the cis-1 and cis-2 bonds of the fullerene molecule. The stability of the spin-adducts depends substantially on the nature of the added radical. The addition rate constants of the ·P(O)(OPri)2, ·But, and Cl3C· radicals to complex 1 and the dimerization rate constants for these spin-adducts were determined.
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页码：309 / 315
页数：6
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