J. Pacansky, Joachim Bargon
JACS
The ESR spectra of a series of benzoylmethyl radicals are reported which exhibit resolved hyperfine splittings from nuclei of the substituted phenyl ring. INDO/CNDO calculations show that the preferred conformation of such radicals have a twisting angle of about 45° between the plane of the phenyl ring and the plane of the carbonylmethyl fragment. Strongly electron-donating or -withdrawing para substituents are believed to render a planar conformation more likely via the admixture of p-quinoid resonance structures. © 1979 American Chemical Society.
J. Pacansky, Joachim Bargon
JACS
Joachim Bargon
JACS
J. Pacansky, G.P. Gardini, et al.
JACS
Marco-A. De Paoli, Robert J. Waltman, et al.
Journal of the Chemical Society - Series Chemical Communications