Synthesis and crystal structure of a novel 3D magnesium(II) coordination polymer constructed by flexible benzene-1,4-dioxyacetate

A novel coordination polymer of [Mg(1,4-BDOA)(CH3OH)(2)](n) (1,4-BDOA(2-)= benzene-1,4-dioxyacetate dianion) has been synthesized and characterized by elemental analysis, IR and single-crystal X-ray diffraction. The crystal crystallizes in monoclinic system, space group P2(1)/c, with a = 12.070(2), b = 7.7088(15), c = 7.3332(15) angstrom, beta = 91.42(3)degrees, V = 682.1(2) angstrom(3), Z = 2, M-r = 312.56, D-c = 1.522 g/cm(3), mu = 0.168 mm(-1), F(000) = 328, the final R = 0.0628 and wR = 0.1591 for 1082 observed reflections with I > 2 sigma(I). The Mg(II) atom and 1,4-BDOA 2- ligand lie in different inversion centers. The Mg(II) atom shows an octahedral geometry defined by four carboxyl O atoms from four different 1,4-BDOA(2-) ligands and two hydroxyl 0 atoms from two methanol molecules. The Mg(II) atoms are bridged by 1,4-BDOA 2- ligands, leading to a 3D infinite network structure.