Bis(μ-2-hydroxybenozato)-κ3O,O′:O′;κ3O:O,O′-bis[(2-hydroxybenozato-κ2O,O′)(1,10-phenanthroline-κ2N,N′)cadmium(II)]

Abstract

The dinuclear title compound, [Cd2(C7H5O3)4(C12H8N2)2], is located on a crystallographic rotation twofold axis. The two CdII ions are connected by two tridentate bridging 2-hydroxybenzoate anions. Each CdII ion is seven-coordinated by five O atoms from three 2-hydroxybenzoate ligands and two N atoms from 1,10-phenanthroline. The 2-hydroxybenzoate molecules adopt two kinds of coordination mode, bidentate chelating and tridentate bridging–chelating. Intramolecular hydrogen bonds between hydroxy and carboxylate groups from 2-hydroxybenzoate groups and π–π stacking interactions between parallel 1,10-phenanthroline ligands [centroid–centroid distances = 3.707 (3) and 3.842 (3) Å] are observed. Furthermore, adjacent benzene rings from 2-hydroxybenzoate ligands are involved in π–π interactions with interplanar distances of 3.642 (3) Å, thereby forming a chain along the a axis direction.