... Polyhedron. ... Two new mono oxidovanadium(V) complexes, [VOL 1 (OEt)] (1) and [VOL 2 (OMe)] (2), of the tridentate Schiff base hydrazone-type O,N,O ... 1.5 mmol, 303 mg) and benzoylacetone (1.5 mmol, 243 mg) in 20 mL methanol for 5 h. The solution volume was decreased to 5 ...