HeI photoelectron spectra of unstable molecules: mono- and di-halogenoketenes
Abstract
HeI Photoelectron spectra are reported for the mono- and di-chloro- and -bromo-ketenes (XHCC
O and X2C
C
O, X
Cl, Br) generated in high yield as unstable molecules from thermolysis of acid halides. The spectra are discussed and assigned by reference to the parent ketene molecule, orbital trends, and comparison with theoretical calculations.