title: Bis(3-carb-oxy-5-nitro-benzoato)bis-[2-(pyridin-4-yl)-1H-imidazo[4,5-f][1,10]phenanthroline]manganese(II).
abstract: In the title compound, [Mn(C(8)H(4)NO(6))(2)(C(18)H(11)N(5))(2)], the Mn(II) atom is six-coordinated by two N,N'-bidentate 6-(pyridin-4-yl)-5H-cyclo-penta-[f][1,10]phenanthroline (pcp) ligands and two carboxyl-ate O atoms from two monodentate 3-carb-oxy-5-nitro-benzoate anions in a distorted cis-MnO(2)N(4) octa-hedral arrangement. Within the pcp ligands, the dihedral angles between the polycyclic skeletons and pendant pyridine rings are 6.2 (2) and 8.3 (2)°. In the crystal, mol-ecules are linked by O-H⋯N and N-H⋯O hydrogen bonds. Several aromatic π-π stacking inter-actions [shortest centroid-centroid separation = 3.516 (3) Å] are also observed.
authors.forename: Hong-Bin
authors.initials: HB
authors.lastname: Xu
authors.forename: Shuai
authors.initials: S
authors.lastname: Ma
authors.forename: Yu
authors.initials: Y
authors.lastname: He