E.P.R. studies of the anions of some peri-alkylnaphthalenes

Abstract

The hyperfine coupling constants for the radical anions of 2,3-dihydro- phenalene (perinaphthane) and 7,8,9,l0-tetrahydrocyclohepta[de]naphthalene have been determined from analysis of the electron spin resonance spectra in solution. The results are compared with data from other mono- and di-peri- substituted naphthalenes. A simple Hückel molecular orbital treatment is used to describe the inductive effect of the aliphatic substituent.