Bis[μ-4-(methylamino)benzoato]-κ3O,O′:O;κ3O:O,O′-bis{aqua[4-(methylamino)benzoato-κ2O,O′](nicotinamide-κN)cadmium(II)}

Abstract

In the dinuclear centrosymmetric CdII compound, [Cd2(C8H8NO2)4(C6H6N2O)2(H2O)2], the metal atom is chelated by two carboxylate groups from 4-(methylamino)benzoate (PMAB) anions, and coordinated by one nicotinamide and one water molecule; a carboxylate O atom from the adjacent PMAB anion bridges to the Cd atom, completing the irregular seven-coordination geometry. In the crystal, intermolecular O—H...O, N—H...O and C—H...O hydrogen bonds link the molecules into a three-dimensional network. π–π contacts between the pyridine rings [centroid–centroid distance = 3.965 (1) Å] may further stabilize the structure. A weak C—H...π interaction also occurs.