Deduction of the Activation Parameters for Ring Expansion and Intersystem Crossing in Fluorinated Singlet Phenylnitrenes

Article abstract of DOI:10.1021/j100151a008

The ratio (k_exp + k_isc)/k_PYR was determined as a function of temperature for the singlet nitrenes derived from pentafluoro, 2,6 difluoro, and 2,4,6-trifluorophenyl azide where k_PYR, k_exp, and k_isc are the absolute rate constants of reaction of the nitrene with pyridine, ring expansion, and intersystem crossing, respectively.Activation parameters were deduced for the three singlet nitrene processes.