Poly[[Bis(Dimethylformamide)[Mu(7)-5,5 '-(Methylenedioxy)Diisophthalato]Dizinc] Dimethylformamide Monosolvate]

In the crystal structure of the title coordination polymer, {[Zn-2(C17H8O10)(C3H7NO)(2)]center dot C3H7NO}(n), the molecular building block (MBB), viz. {Zn-2(CO2)(4)(C3H7NO)(2)}, comprises two zinc atoms, each bridged by three carboxylate groups. These two Zn atoms exhibit different coordination environments: a distorted coordination intermediate between trigonal-pyramidal, and square-pyramidal formed by the two coordinated dimethylformamide molecules and three carboxylate groups, and a distorted tetrahedral coordination defined by carboxylate groups of which three are bidentate bridging and the fourth is a monodentate ligand. Thus, each ligand connects four MBBs, forming the three-dimensional polymer.