Preparation and structures of trinuclear manganese(II) complexes with N-2-pyridiylmethylidene-2-hydroxy-5-substituted-phenylamine

Abstract

The trinuclear manganese(II) complexes, [Mn II 3(OAc) 4(pap) 2(H 2O) 2] and [Mn II 3(OAc) 4(5-Cl-pap) 2(MeOH) 2] were prepared by the reaction of tridentate Schiff base ligands X-papH (X=H, Cl), [ N-2-pyridiylmethylidene-2-hydroxy-5-substituted-phenylamine], and Mn II(OAc) 2·2H 2O. In the molecular structures of these complexes, two terminal manganese ions are coordinated with one oxygen and two nitrogen atoms of X-pap, two oxygen atoms of OAc − and a solvent molecule, to form a distorted octahedral structure where the central manganese ion resides on a center of symmetry and is surrounded by an O 6 donor set of four oxygen atoms from four bridging OAc − and two phenolic oxygen atoms of two X-pap ligands.