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Electronic absorption spectra of charge-transfer complexes and effects of substituents in radical cations

  • Physical Chemistry
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Russian Chemical Bulletin Aims and scope

Abstract

The effects of X substituents on the energies of charge-transfer bandshv CT in electronic absorption spectra of charge-transfer complexes of π-, n-, or σ-donors (DX) with π- or σ-acceptors (A) as well as on the ionization potentialsI D of individual DX molecules are described by the equationhv CT(l D)=a +bσ1 +cσ +R +dσα. When DX and A are fixed, the inductive (bσ1), resonance (cσ +R ), and polarization (dσα) contributions tohv CT andI D are virtually identical. The electronic structure of the D.+X donor component of the compact [A.−, D.+X] radical-ionic pair in a solution is similar to that of the radical cation generated upon photoionization of the individual DX molecule in the gaseous phase.

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Authors and Affiliations

  1. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603600, Nizhni Novgorod, Russian Federation

    A. N. Egorochkin, O. V. Zderenova & S. E. Skobeleva

Authors
  1. A. N. Egorochkin
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  2. O. V. Zderenova
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  3. S. E. Skobeleva
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1002–1006, June, 2000.

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Egorochkin, A.N., Zderenova, O.V. & Skobeleva, S.E. Electronic absorption spectra of charge-transfer complexes and effects of substituents in radical cations. Russ Chem Bull 49, 997–1001 (2000). https://doi.org/10.1007/BF02494882

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  • DOI: https://doi.org/10.1007/BF02494882

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