Barriers to internal rotation in benzoyl cyanide and benzoyl halides
Abstract
The free energy barriers (ΔG‡) in benzoyl cyanide, fluoride, chloride, and bromide, as determined by 13C dynamic n.m.r. spectroscopy, are 8·4, 7·0, 6·4, and 6·1 kcal mol–1, respectively.