DETERMINATION OF THE GAS-PHASE VALUE OF THE INDUCTIVE EFFECT PARAMETER OF THE METHYL-GROUP FROM SOLVATOCHROMIC STUDY OF THE CHARGE-TRANSFERBAND MAXIMA OF COMPLEXES OF TETRACYANOETHYLENE WITH METHYLBENZENES

Authors
ROY M SEAL BK
Citation
M. Roy et Bk. Seal, DETERMINATION OF THE GAS-PHASE VALUE OF THE INDUCTIVE EFFECT PARAMETER OF THE METHYL-GROUP FROM SOLVATOCHROMIC STUDY OF THE CHARGE-TRANSFERBAND MAXIMA OF COMPLEXES OF TETRACYANOETHYLENE WITH METHYLBENZENES, Proceedings of the Indian Academy of Sciences. Chemical sciences, 106(1), 1994, pp. 83-87
Citations number
14
Categorie Soggetti
Chemistry
Journal title
Proceedings of the Indian Academy of Sciences. Chemical sciences → ACNP
ISSN journal
02534134
Volume
106
Issue
1
Year of publication
1994
Pages
83 - 87
Database
ISI
SICI code
0253-4134(1994)106:1<83:DOTGVO>2.0.ZU;2-K
Abstract
From solvatochromicity of CT-band maxima of complexes of TCNE with met hylbenzenes in several apolar and polar solvents the inductive effect parameter, h(Me), of the methyl group has been calculated by the Couls on-Longuet-Higgins perturbation theory. From the measured solvent depe ndence of h(Me), the gas-phase value of the same has been determined t o be -0.38 which is comparable with Streitwieser's recommended value o f h(Me) = -0.50. The higher value of h(Me) in the ps phase than in sol ution has been explained.