Targeted Synthesis of μ-Oxo Divanadium(V) Compounds with Asymmetry in Coordination Environments^†

Isovalent μ-oxo divanadium(V) compounds [L1VO(μ-O)VO(salen)] (1) and its bromo derivative [L2VO(μ-O)VO(salen)]·CH3CN (2) (both H2L1 and H2L2 are tridentate dithiocarbazate-based ONS ligands) with ligands providing donor set and coordination number asymmetry in tandem have been synthesized for the first time; confirmations in favor of these unsymmetrical molecular structures have come from single-crystal X-ray diffraction analysis, as well as from NMR (both 1H and 51V) spectroscopy.