Bis(Μ-3-Hy­Droxy­Benzoato)-Κ3 O 1,O 1′:O 1;Κ3 O 1:O 1,O 1′-Bis­[(3-Hy­Droxy­Benzoato-Κ2 O,O′)(Iso­Nicotinamide-Κn 1)Cadmium] Tetra­hydrate

Abstract

In the title centrosymmetric binuclear CdII compound, [Cd2(C7H5O3)4(C6H6N2O)2]·4H2O, the six-coordinated CdII atom is chelated by the carboxyl­ate groups of the two 3-hy­droxy­benzoate (HB) anions; the two monomeric units are bridged through the two O atoms of the two carboxyl­ate groups. In the crystal, 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 and between the benzene rings [centroid-centroid distances = 3.770 (1), 3.769 (1) and 3.632 (1) Å] may further stabilize the structure.