Crystal structure of {2,2'-[ethyl-enebis(nitrilo-methanylyl-idene)]diphenolato-κ(4) O,N,N',O'}oxidovanadium(IV) methanol monosolvate.

Abstract

Two independent mol­ecules of the title solvated complex, [V(C16H14N2O2)O]·CH3OH, also known as [N,N′-bis­(salicyl­idene)ethyl­enedi­amine]­oxidovanadium(IV) or vanadyl salen, crystallize in the asymmetric unit. Each disordered methanol solvent mol­ecule [occupancy ratios 0.678 (4):0.322 (4) and 0.750 (5):0.250 (5)] is linked to a [N,N′-bis­(salicyl­idene)ethyl­enedi­amine]­oxidovanadium(IV) mol­ecule by an O—H⋯O hydrogen bond and to others by C—H⋯O hydrogen bonds. The resulting extended structure consists of a bilayer of mol­ecules parallel to the ab plane. Despite the fact that solvates are common in complexes derived from substituted analogues of the N,N′-bis­(salicyl­idene)ethyl­enedi­amine ligand, the title solvate is the first one of [N,N′-bis­(salicyl­idene)ethyl­enedi­amine]­oxidovanadium(IV) to be structurally characterized. The two vanadyl species have very similar inter­nal geometries, which are best characterized as distorted square-based pyramidal with the vanadium atom displaced from the N2O2 basal plane by 0.5966 (9) Å in the direction of the doubly-bonded oxide ligand.