Abstract
1. The electronic absorption spectra of charge transfer complexes of thiophene and furan derivatives with tetracyanoethylene have been studied and the linear character of the dependence relating the charge transfer frequency with the σ+-constants of the substituents has been shown. 2. Thiophene derivatives with SCH3 substituents display a special dependence of the charge transfer frequency on the σ+-constants, which is explained by an enhancement of the donor properties of the substituent in the CTS. 3. Thiophene and furan derivatives with only acyl type substituents do not conform with the established dependences of the charge transfer frequency on σ+ which apparently is due to a shift of the donor center on complex formation.
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Schedule a callMore From: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science
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