Butane-1,4-diammonium bis(pyridine-2,6-dicarboxylato-κ3O2,N,O6)cadmate(II) dihydrate

Abstract

In the title compound, (C4H14N2)[Cd(C7H3NO4)2]·2H2O, the CdII ion is coordinated by four O atoms [Cd—O = 2.2399 (17)–2.2493 (17) Å] and two N atoms [Cd—N = 2.3113 (15) and 2.3917 (15) Å] from two tridentate pyridine-2,6-dicarboxylato ligands in a distorted octahedral geometry. The uncoordinated water molecules are involved in O—H...O and N—H...O hydrogen bonds, which contribute to the formation of a three-dimensional supramolecular structure, along with π–π stacking interactions [centroid–centroid distances of 3.5313 (13) and 3.6028 (11) Å between the pyridine rings of neighbouring dianions].