Poly[di-μ-aqua-μ-1,2-bis(pyridin-4-yl)ethene-κ²N:N′-tetrakis(4-iodobenzo­ato-κ²O,O′)dicadmium]

Colourless crystals of the title compound, [Cd₂(C₇H₄IO₂)₄(C₁₂H₁₀N₂)(H₂O)₂]_n, were obtained by the self-assembly of Cd(NO₃)₂·4H₂O, 1,2-bis­(pyridin-4-yl)ethene (bpe) and 4-iodo­benzoic acid (4-IBA). Each Cd^II atom is seven-coordinated in a penta­gonal–bipyramidal coordination environment by four carboxyl­ate O atoms from two different 4-IBA ligands, two O atoms from two water mol­ecules and one N atom from a bpe ligand. The Cd^II centres are bridged by the aqua mol­ecules and bpe ligands, which lie across centres of inversion, to give a two-dimensional net. Topologically, taking the Cd^II atoms as nodes and the μ-aqua and μ-bpe ligands as linkers, the two-dimensional structure can be simplified as a (6,3) network.