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

  • Physical Chemistry
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Russian Chemical Bulletin Aims and scope

Abstract

The addition of element-centered radicals to perfluorinated α-triketones (CF3)2CFCOCOCOC2F5 (1) and (CF3)2CFCOCOCO(CF3)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(C6F5)3 and ·Mn(CO)5 radicals are added to1 at the carbonyl group directly bound to the pentafluoroethyl substituent. The hindered rotation of the (CF3)2CF group was observed for the spin-adduct of ·Ge(C6F5)3 with2.

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Authors and Affiliations

  1. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. vavilova, 117813, Moscow, Russian Federation

    E. N. Shaposhnikova, S. R. Sterlin, S. P. Solodovnikov, N. N. Bubnov & B. L. Tumanskii

Authors
  1. E. N. Shaposhnikova
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  2. S. R. Sterlin
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  3. S. P. Solodovnikov
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  4. N. N. Bubnov
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  5. B. L. Tumanskii
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 474–477, March, 1999.

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Shaposhnikova, E.N., Sterlin, S.R., Solodovnikov, S.P. et al. ESR study of the structure and reactivity of spin-adducts of element- and metal-centered radicals with perfluorinated α-triketones. Russ Chem Bull 48, 470–473 (1999). https://doi.org/10.1007/BF02496163

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  • DOI: https://doi.org/10.1007/BF02496163

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