Triaqua­bis(4-carb­oxy-1 H-imidazole-5-carboxyl­ato)cadmium(II) monohydrate: a three-dimensional hydrogen-bonded network.

In the title neutral mononuclear complex, [Cd(H2IDC)2(H2O)3]·H2O (H2IDC is the 4-carb­oxy-1 H-imidazole-5-carboxyl­ate anion, C5H3N2O4), the CdII atom is trans-coordinated by two H2IDC ligands and three aqua mol­ecules, displaying a distorted trigonal-bipyrimidal geometry. Inter­estingly, H2IDC coordinates in an N-monodentate fashion to the central CdII atom, which is unprecedented. A three-dimensional supramolecular network is generated through N—H⋯O and O—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]