The molecular and electronic structure of N,N
-ethylenebis(acetylacetonylideiminato)oxovanadium(IV) and the electronic structure of its thio analogue

The electronic structures of the title complexes—VO(acen) and VS(acen)—and the free H2(acen) ligand are probed using gas-phase UV-photoelectron spectroscopy [acen = N,N_-ethylenebis(acetylacetonylideiminato)]. The effect of the different axial donors on the metal center is examined, as is the effect that the oxo and thio ligands have on the acen orbitals.We find that the oxo and thio donors primarily affect the metal center and that the ligand periphery remains mostly unchanged..