He(I) and He(II) excited photoelectron spectra and electronic structure of ‘pseudo-octahedral’ dichloro- and dimethyl-bis(pentane-2,4-dionato)tin(IV)

Abstract

Vapour-phase He(I) and He(II) excited photoelectron spectra are reported for two prototype ‘pseudo-octahedral’ tin complexes SnR₂(pd)₂(R = Cl or Me; pd = pentane-2,4-dionate). The spectra indicate pronounced changes in the bonding depending on the stereochemical conformation of each complex. Notable variations in the band-intensity patterns are observed on going from He(I) to He(II) excitation. This provides information on the nature of the molecular subshells involved in the photoionization processes and on the inherent Sn 5p cross-section.