Date Published: June 01, 2012
Publisher: International Union of Crystallography
Author(s): Quanwei Li, Li He, Hongxiao Jin.
In the complex cation of the title compound, [Mn(C7H5O4)(C12H8N2)2(H2O)](C7H5O4)·0.5H2O, the MnII atom has a six-coordinate octahedral environment defined by one carboxylate O atom belonging to a 2,6-dihydroxybenzoate (DHB) ligand, four N atoms from two chelating 1,10-phenanthroline molecules and one water molecule. The lattice water molecule lies on a twofold rotation axis. Intramolecular O—H⋯O hydrogen bonds are present in the DHB anions and complex cations. Intermolecular O—H⋯O hydrogen bonds link two cations, two anions and one water molecule into a dimer. π–π interactions between the pyridine and benzene rings and between the benzene rings are also observed [centroid–centroid distances = 3.7774 (16), 3.7912 (16) and 3.7310 (17) Å].
For related structures of dihydroxybenzoate manganese(II) complexes, see: Garribba et al. (2004 ▶). For the structure of a neodymium(III) complex containing 2,6-dihydroxybenzoate ligands, see: Zheng et al. (2010 ▶).