Regioselectivity of the addition of •CCl3 and •But radicals to (η2-C70)[Os(CO)(PPh3)2(CNBut)]n (n = 1, 2): an ESR study

The addition of • CCl 3 and • Bu t radicals to (η 2 -C 70 )Os(CO)(PPh 3 ) 2 (CNBu t ) ( 1 ) and (η 2 -C 70 )[Os(CO)(PPh 3 ) 2 (CNBu t )] 2 ( 3 ) was studied by ESR spectroscopy. The metal fragment in complex 1 does not influence the regioselectivity of the addition of the radicals to it. The stabili...

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Published inRussian chemical bulletin Vol. 59; no. 9; pp. 1707 - 1712
Main Authors Gasanov, R. G., Martynova, E. V., Tsikalova, M. V., Stankevich, I. V., Novikov, Yu. N.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.09.2010
Subjects
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
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Inorganic Chemistry
Organic Chemistry
electronic effects
regioselectivity
butyl radicals
phosphoryl, trichloromethyl, and
ESR spectroscopy
metallofullerenes
stability
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Summary:The addition of • CCl 3 and • Bu t radicals to (η 2 -C 70 )Os(CO)(PPh 3 ) 2 (CNBu t ) ( 1 ) and (η 2 -C 70 )[Os(CO)(PPh 3 ) 2 (CNBu t )] 2 ( 3 ) was studied by ESR spectroscopy. The metal fragment in complex 1 does not influence the regioselectivity of the addition of the radicals to it. The stability of the spin adducts formed upon addition of free radicals to complexes 1 and 3 is mainly governed by delocalization of the unpaired electron over three hexagonal rings.
ISSN:1066-5285
1573-9171
DOI:10.1007/s11172-010-0300-3