Poly bis (dimethyl sulfoxide) zinc(II) -di-mu(4)-benzene-1,4-dicarboxylato dimethyl sulfoxide pentasolvate

摘要

In the crystal structure of the title compound, [Zn-2(C8H4O4)(2)(C2H6OS)(2)]center dot 5C(2)H(6)OS, four independent carboxylate units of the 1,4-benzenedicarboxylate groups chelate to two Zn atoms to give rise to -O-C-O-Zn (...) Zn-rings, the four O atoms around each zinc atom forming a square, above which is a dimethyl sulfoxide ( DMSO) molecule and below which is the other Zn atom. The bridging mode of the 1,4-benzenedicarboxylate groups, one of which lies on a general position and the other two on inversion centers, leads to a layer structure having DMSO molecules between the layers. The uncoordinated solvent molecules account for about 80% of the volume of the unit cell.