Synthesis, Crystal Structure and Superoxide Dismutase (SOD) Activity of Novel Seven-Coordinated Manganese(II) Complex with Multidentate Di-Schiff Base Ligands

Abstract

Abstract A novel hepta-coordinated mononuclear manganese(II) complex, [Mn(L)2(H2O)](ClO4)2·2.5H2O [L=1,2-bis(2′-pyridylmethyleneamino)propane], was obtained by assembly reaction of a di-Schiff base ligand L with manganese(II) perchlorate. The crystal structure shows that one of the L ligand acts as a quadridentate ligand, while the other one serves as a bidentate. The Mn(II) complex was found to have activity of dismutation of superoxide (O2·-) in the riboflavin-methionine-nitro blue tetrazolium assay.