J. Am. Chem. SOC.1993,115, 8340-8344
8340
Laser Flash Photolysis Determination of Absolute Rate Constants for Reactions of Bromine Atoms in Solution J. C. Scaiano,*J M. Barra,l M. Krzywinski,l R. Sinta,* and C. Calabrese2 Contributionfrom the Department of Chemistry, University of Ottawa, Ottawa, Canada KIN 6N5, and Research and Development Laboratories, Shipley Co., Inc., Marlboro, Massachusetts 01752 Received April 12, 1993
Abstract: The photodecomposition of vicinal dibromides at 266 nm produces bromine atoms with a quantum yield of -2.0. This results from an efficient primary photocleavage of a C-Br bond, followed by rapid elimination of a second bromine atom from radicals of the type RCH-CH2Br. This cleavage occurs with a lifetime of
