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

Rachel E Hsuan; Jemma E Hughes; Thomas H Miller; Nabila Shaikh; Phoebe H M Cunningham; Alice E O'Connor; Jeremiah P Tidey; Alexander J Blake

doi:10.1107/S1600536814023332

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

Acta Crystallogr Sect E Struct Rep Online. 2014 Oct 29;70(Pt 11):m380-1. doi: 10.1107/S1600536814023332. eCollection 2014 Nov 1.

Authors

Rachel E Hsuan¹, Jemma E Hughes¹, Thomas H Miller¹, Nabila Shaikh¹, Phoebe H M Cunningham¹, Alice E O'Connor¹, Jeremiah P Tidey¹, Alexander J Blake¹

Affiliation

¹ School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, England.

Abstract

Two independent mol-ecules of the title solvated complex, [V(C16H14N2O2)O]·CH3OH, also known as [N,N'-bis-(salicyl-idene)ethyl-enedi-amine]-oxidovanadium(IV) or vanadyl salen, crystallize in the asymmetric unit. Each disordered methanol solvent mol-ecule [occupancy ratios 0.678 (4):0.322 (4) and 0.750 (5):0.250 (5)] is linked to a [N,N'-bis-(salicyl-idene)ethyl-enedi-amine]-oxidovanadium(IV) mol-ecule 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 mol-ecules parallel to the ab plane. Despite the fact that solvates are common in complexes derived from substituted analogues of the N,N'-bis-(salicyl-idene)ethyl-enedi-amine ligand, the title solvate is the first one of [N,N'-bis-(salicyl-idene)ethyl-enedi-amine]-oxidovanadium(IV) to be structurally characterized. The two vanadyl species have very similar inter-nal 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: 2,2′-[ethylenebis(nitrilomethanylylidene)]diphenolate; N,N′-bis(salicylidene)ethylenediamine; crystal structure; hydrogen bonding; oxidovanadium(IV).