Hydro­thermal synthesis and crystal structure of poly[bis­(μ(3)-3,4-di­amino­benzoato)manganese], a layered coordination polymer

The hydro­thermal synthesis and crystal structure of the title two-dimensional coordination polymer, poly[bis­(μ(3)-3,4-di­amino­benzoato-κ(3) N (3),O,O′)manganese(II)], [Mn(C(7)H(7)N(2)O(2))(2)](n), are described. The Mn(2+) cation (site symmetry [Image: see text]) adopts a tetra­gonally elongated trans-MnN(2)O(4) octa­hedral coordination geometry and the μ(3)-N,O,O′ ligand (bonding from both carboxyl­ate O atoms and the meta-N atom) links the metal ions into infinite (10[Image: see text]) layers. The packing is consolidated by intra-layer N—H⋯O and inter-layer N—H⋯N hydrogen bonds. The structure of the title compound is compared with other complexes containing the C(7)H(7)N(2)O(2) (−) anion and those of the related M(C(8)H(8)NO(2))(2) (M = Mn, Co, Ni, Zn) family, where C(8)H(8)NO(2) (−) is the 3-amino-4-methyl­benzoate anion.