Photoelectron Spectra of Some Bromoethylenes and 2-Bromopropene

Abstract

The photoelectron spectra of vinyl bromide, cis- and trans-1,2-dibromoethylene and 2-bromopropene have been obtained. Interaction of the bromine "lone pair" electrons with those in the C=C π bond is discussed. The assignments are considered in relation to the chloroethylenes. The spectra provide experimental evidence for a proposal by Klasson and Manne that previous studies have reported too many I.P.'s for some of the chloroethylenes.