Bis(μ-3-carb­oxy-2-hy­droxy­propane-12-dicarboxyl­ato)bis(diaquazinc)–12-bis­(pyridin-4-yl)ethene–water (1/1/2)

摘要

The asymmetric unit of the title compound, [Zn2(C6H6O7)2(H2O)4]·C12H10N2·2H2O, comprises half of a centrosymmetric complex dimer, half of a 1,2-bis­(pyridin-4-yl)ethene mol­ecule, which lies across an inversion centre, and one lattice water mol­ecule. Carboxyl­ate groups of two dianionic citrate ligands bridge two Zn^II ions to give the cyclic dimer, with each Zn^II ion coordinated by four O atoms from the chelating citrate ligand (one hy­droxy and three carboxyl­ate, with one bridging) and two water O atoms, forming a distorted octa­hedral environment [Zn—O = 2.040 (3)–2.244 (3) Å]. In the crystal, O—H⋯O and O—H⋯N hydrogen bonds involving hy­droxy groups and both coordinating and lattice water mol­ecules link the dimers to give a three-dimensional framework structure.