title: A monoclinic polymorph of di-μ-oxido-bis-({2-[2-(methyl-amino)ethyl-imino-methyl]phenolato-κN,N',O}oxidovanadium(V)).
abstract: A new monoclinic polymorph of the title compound, [V(2)(C(10)H(13)N(2)O)(2)O(4)], which is a centrosymmetric dimer, crystallizes in space group P2(1)/c, whereas the previously known polymorph crystallizes in the ortho-rhom-bic space group Pbca [Mokry & Carrano (1993 ▶). Inorg. Chem.32, 6119-6121]. Each V(V) atom is six-coordinated by one oxide group, two N atoms and one O atom from the Schiff base ligand, and by two additional bridging O atoms. The two methyl-ene groups are each disordered over two sites, with occupancy factors of 0.776 (14) and 0.224 (14). In the crystal structure, there are C-H⋯O hydrogen bonds and C-H⋯π inter-actions between the dimers.
authors.affiliation: University of Gdańsk, Faculty of Chemistry, Sobieskiego 18/19, 80-952 Gdańsk, Poland.
authors.forename: Grzegorz
authors.initials: G
authors.lastname: Romanowski
authors.forename: Michał
authors.initials: M
authors.lastname: Wera
authors.forename: Artur
authors.initials: A
authors.lastname: Sikorski