Pulse fourier transform 13C nuclear magnetic resonance spectra of cyclopropenones and related derivatives

Abstract

Pulse Fourier transform ¹³C n.m.r. spectra of diphenylcyclopropenone, diphenylcyclopropenethione, triphenylcyclopropene, diphenylcyclopropenone dimer, and other model compounds have been measured. The carbon chemical shift data, discussed in terms of the present concepts regarding the structures of these cyclopropene derivatives, provide further evidence for the pronounced polarization in these systems.