Diaqua(1,10-phenanthroline-5,6-dione-κ2N,N)(pyridine-2,6-dicarboxylato-κ3O,N,O′)manganese(II) dihydrate

Abstract

The title compound, [Mn(C7H3NO4)(C12H6N2O2)(H2O)2]·2H2O, is a neutral mononuclear MnII complex. The Mn—N bond to the pyridine-2,6-dicarboxylate ligand lies along a crystallographic twofold rotation axis. The Mn2+ cation has a distorted penta­gonal–bipyramidal configuration, coordinated by three N atoms, one from the pyridine-2,6-dicarboxyl­ate ligand and two from the chelating 1,10-phenanthroline-5,6-dione ligand. The remaining four coordination sites are occupied by O atoms, two from the pyridine-2,6-dicarboxyl­ate ligand and two from water mol­ecules. The asymmetric unit also contains a solvent water mol­ecule. The crystal structure is stabilized by a network of O—H⋯O hydrogen-bonding inter­actions in a three-dimensional supra­molecular structure.