Acta Crystallographica Section C

Crystal Structure Communications

Volume 61, Part 1 (January 2005)

metal-organic compounds

fg1790 scheme

Acta Cryst. (2005). C61, m25-m29 [doi:10.1107/S0108270104029531]

Two two-dimensional Mn^II and Na^I coordination polymers constructed by the flexible benzene-1,4-dioxyacetate ligand

S. Gao, J.-W. Liu, L.-H. Huo, H. Zhao and J.-G. Zhao

Abstract: Two new two-dimensional coordination polymers, poly[[[aqua(2,2'-bipyridine- [bold kappa] ²N,N')manganese(II)]- [bold mu] ₃-p-phenylenebis(oxyacetato)-³O:O':O''] dihydrate], {[Mn(C₁₀H₈O₆)(C₁₀H₈N₂)(H₂O)]·2H₂O}_n, (I), and poly[[di--aqua-bis[aquasodium(I)]]-₄-p-phenylenebis(oxyacetato)-O:O',O'':O''',O'''':O'''''], [Na₂(C₁₀H₈O₆)(H₂O)₄]_n, (II), have been synthesized and characterized by X-ray single-crystal diffraction. In (I), there are two 1,4-BDOA^2- [p-phenylenebis(oxyacetate) or, more commonly, benzene-1,4-dioxyacetate] ligands, each lying about inversion centres, while in (II), there is one such ligand and it also has crystallographically imposed inversion symmetry. In (I), each Mn^II atom displays an octahedral MnN₂O₄ configuration, defined by three carboxyl O atoms of different 1,4-BDOA^2- groups, two N atoms of one 2,2'-bipyridine ligand and one water molecule. In (II), each Na^I atom is octahedrally coordinated by one ether O atom, two carboxyl O atoms of different 1,4-BDOA^2- ligands and three water molecules. The metal ions in complexes (I) and (II) are bridged by 1,4-BDOA^2- groups into two-dimensional layer structures. Furthermore, three-dimensional supramolecular networks are constructed via hydrogen bonds in (I) and (II), and by additional [bold pi] - stacking interactions in (I).

Formula: [Mn(C₁₀H₈O₆)(C₁₀H₈N₂)(H₂O)]·2H₂O and [Na₂(C₁₀H₈O₆)(H₂O)₄]


	Structure factor file (CIF format) (241.3 kbytes) Contains datablock I

	Structure factor file (CIF format) (78.2 kbytes) Contains datablock II

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