Indo study of the angular dependences of isotropic hyperfese interaction constants in the model conformations of the nitrobenzene radical anion

Autor: Lyudmila N. Shchegoleva, L. A. Shundrin, V. D. Shteingarts, V. F. Starichenko
Rok vydání: 2000
Předmět:
Zdroj: Journal of Structural Chemistry. 41:368-377
ISSN: 1573-8779
0022-4766
Popis: The UHF/INDO calculations of the model conformations of the nitrobenzene radical onion show that rotation of the nitro group relative to the plane of the benzene ring is accompanied by a pyramidal distortion of the group caused by the pseudo-Jahn-Teller effect (vibronic interaction between the ground n and totally symmetric lowest excited σ states). The angular dependences of the14N,13C,1H, and17O Isotropic hyperfine interaction constants are analyzed. Experimental ESR data are interpreted for the radical anions of nitrobenzene derivatives with ortho-alkyl groups.
Databáze: OpenAIRE