Poly[diaqua(μ4-2,5-dicarboxybenzene-1,4-dicarboxylato-κ4O1:O2:O4:O5)(μ2-2,5-dicarboxybenzene-1,4-dicarboxylato-κ2O1:O4)bis(1,10-phenanthroline-κ2N,N′)dimanganese(II)]

Abstract

In the title compound, [Mn2(C10H4O8)2(C12H8N2)2(H2O)2]n, the Mn2+ ion has a slightly distorted octahedral N2O4 coordination geometry being coordinated by one aqua O atom, two N atoms of the chelating 1,10-phenanthroline ligand and three carboxyl O atoms from three 2,5-dicarboxybenzene-1,4-dicarboxylate (H2btec2−) ligands. The H2btec2− anion exhibits two different coordination modes, viz. μ2 and μ4. Both of the H2btec2− anions are located on special positions (inversion centers). The μ4-anion bridges adjacent MnII atoms, forming a chain along the a axis. Adjacent chains are further bridged by μ2-anions, resulting in a two-dimensional layered polymer parallel to (011). In the crystal, extensive carboxy–carboxylate O—H...O and water–carboxylate O—H...O interactions lead to the formation of a three-dimensional supramolecular network.