Collect. Czech. Chem. Commun. 1982, 47, 1733-1737

Dipole moments induced in larger molecules. Triphenylmethyl derivatives

Otto Exnera, Dario Iarossib and Piero Vivarellib

a Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6, Czechoslovakia
b Istituto di Chimica Organica, Universita di Modena, 411 00 Modena, Italia


Dipole moments of triphenylmethyl derivatives I-VI with electron attracting functional groups were measured in benzene solution. Comparison with respective methyl and tert-butyl derivatives revealed the moments induced in the phenyl group which are possibly somewhat greater than those induced in an alkyl group. These moments should be accounted for when determining mesomeric dipole moments of acceptor groups from benzene derivatives; however, a quantitative evaluation is not yet possible.