| Autor: |
Gasanov, R. G., Tsikalova, M. V., Martynova, E. V., Novikov, Yu N. |
| Předmět: |
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| Zdroj: |
Fullerenes, Nanotubes & Carbon Nanostructures; Sep-Dec2008, Vol. 16 Issue 5/6, p314-321, 8p, 1 Chart, 3 Graphs |
| Abstrakt: |
In this paper we have present the results of study for electronic influence of the metal fragment on the regioselectivity of addition of •CCl3 (R1 ) and •Bu t (R2 ) radicals to the complexes (η2-C60)IrH(CO)(PPh3)2 (I), (η2-C60)IrH(CO)[(+)DIOP] (II), (η2-C60)Os(CO)(PPh3)2(CNBut) (III) and on the stability of spin-adducts (SA). It was found that the addition of R1 and R2 to I-III unlike methano- or pyrrolidinofullerenes the ESR spectra exhibit signals from some regio-isomers which substantial different by the g-factor. The assignment of the individual signals to definite regio-isomers was made. The rate constants of the addition of radicals R1 and R2 to carbon atoms of individual bonds in I-III were determined using the method of competing reactions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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