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Acta Cryst. (2012). E68, m1184-m1185
[ doi:10.1107/S1600536812035441 ]


K.-L. Zhong

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. [mu]2 and [mu]4. Both of the H2btec2- anions are located on special positions (inversion centers). The [mu]4-anion bridges adjacent MnII atoms, forming a chain along the a axis. Adjacent chains are further bridged by [mu]2-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.

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