Synthesis, X-Ray Crystal Structures and Catalytic Epoxidation of Oxidovanadium(V) Complexes with Aroylhydrazone and Ethyl Maltolate Ligands

Two oxidovanadium(V) complexes, [VOL1L] (1) and [VOL2L] (2) (L = ethyl maltolate), derived from the aroylhydrazones 4-bromo-N’-(2-hydroxy-5-methylbenzylidene)benzohydrazide (H2L1) N’-(3,5-dibromo-2-hydroxybenzylidene)- 4-methoxybenzohydrazide (H2L2), respectively, have been synthesized characterized by elemental analysis, infrared electronic spectroscopy. Structures of complexes were further confirmed single crystal X-ray determination. The V atoms in are coordinated ONO donor aroylhydrazone ligand, OO maltolate one oxido O atom, forming octahedral coordination. function as effective olefin