Tetra-butyl-ammonium bis-[4,4′-dimethyl-2,2′-(3,7-dimethyl-1H- 4,2,1-benzothiaza-siline-1,1-diyl)dibenzene-thiol-ato]vanadium(III) acetonitrile tetrasolvate

In the title compound, [N(C₄H₉)₄][V(C ₂₃H₂₁NS₃Si)₂]·4CH ₃CN, the V^III atom (site symmetry ) is coordinated by two N,S,S′-tridentate 4,4′-dimethyl-2,2′-(3,7-dimethyl-1H-4,2,1- benzothiaza-siline-1,1-diyl)dibenzene-thiol-ate ligands in a distorted trans-VN₂S₄ octa-hedral geometry. The complete cation is generated by crystallographic twofold symmetry, with the V atom lying on the rotation axis. The unusual ligand arose from nucleophilic attack on the coordinated nitrile by the thiol-ate precursor and reduction of nitrile to the imidate.