Photoelectron spectra of carbonyl halides and related compounds

Abstract

Photoelectron spectra in the region 6 to 21 eV have been measured for carbonyl halides (fluoride, chloride and bromide) and carbonyl cyanide. In a number of cases, vibrational structure coupled with the ionization process has been resolved and correlated with the known frequencies of the parent molecule. Ionization potentials have been derived for the removal of an electron from orbitals of different kinds, such as the C=O π orbital and various nonbonding molecular orbitals. The results have been correlated with other data on the chemical reactivity of these molecules.

Photoelectron Spectra of Some Bromoethylenes and 2-Bromopropene

“…A recently reported p.e. spectrum of Br,CO (21) shows that the highest energy o orbitals are overlapping in the range 15.5-16.5 eV. A o orbital with significant C-Br character should occur at lower binding energy in CH,=CHBr, but higher than in CH,Br (vide supra).…”

Ion energetics measurements :

“…Thomas, R. K., 3705,3726,3734,4080 Thommen, E., 3629 Thompson, G. L., 4006 Thompson, H" 3705,3726 Turner, D. W., 3520, 3527, 3677, 3683, 3702, 3703, 3718, 3733, 3854, 3871, 3890 Tuttle, M., 3851…”