Crystal structure of {2,2′-[ethylenebis(nitrilomethanylylidene)]diphenolato-κ4O,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.

Keywords

• crystal structure
• oxidovanadium(IV)
• 2,2′-[ethylenebis(nitrilomethanylylidene)]diphenolate
• N,N′-bis(salicylidene)ethylenediamine
• hydrogen bonding