NDLI: ESR study of the structure and reactivity of spin-adducts of element- and metal-centered radicals with perfluorinated α-triketones

Content Provider	SpringerLink
Author	Shaposhnikova, E. N. Sterlin, S. R. Solodovnikov, S. P. Bubv, N. N. Tumanskii, B. L.
Copyright Year	1999
Abstract	The addition of element-centered radicals to perfluorinated α-triketones (CF$_{3}$)$_{2}$CFCOCOCOC$_{2}$F$_{5}$ (1) and (CF$_{3}$)$_{2}$CFCOCOCO(CF$_{3}$)$_{2}$ (2) was studied by the ESR method. In the case of Si-centered radicals, α-siloxydiketomethyl radicals are formed, which are characterized by the highest delocalization of an unpaired electron. The dimerization of these radicals is characterized by a low value of the enthalpy of the radical—dimer equilibrium (2.7 kcal mol$^{−1}$). The Ge(C$_{6}$F$_{5}$)$_{3}$ and ·Mn(CO)$_{5}$ radicals are added to1 at the carbonyl group directly bound to the pentafluoroethyl substituent. The hindered rotation of the (CF$_{3}$)$_{2}$CF group was observed for the spin-adduct of ·Ge(C$_{6}$F$_{5}$)$_{3}$ with2.
Starting Page	470
Ending Page	473
Page Count	4
File Format	PDF
ISSN	10665285
Journal	Russian Chemical Bulletin
Volume Number	48
Issue Number	3
e-ISSN	15739171
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	1999-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	spin-adduct perfluorinated α-triketones ESR heteroallyl radical Chemistry/Food Science Inorganic Chemistry Organic Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry

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ESR study of the structure and reactivity of spin-adducts of element- and metal-centered radicals with perfluorinated α-triketones