Photoelectron spectra of sulphidoborons XBS where X = H, F, Cl, or Br

Abstract

The photoelectron spectrum of the unstable new sulphidoboron BrBS has been obtained together with new refined measurements on HBS and CIBS. These new data have enabled the series of molecules XBS (X = H, F, Cl, or Br) to be compared so that general trends in the ionisation energies can be investigated as a function of the substituent X. Self consistent field molecular-orbital calculations with a double-zeta basis set have been used to assist in the assignment of the bands in the photoelectron spectra.