Crystal structure of bis­(μ-3-nitro­benzoato)-κ(3) O,O′:O;κ(3) O:O,O′-bis­[bis­(3-cyano­pyridine-κN (1))(3-nitro­benzoato-κ(2) O,O′)cadmium]

The asymmetric unit of the title compound, [Cd(2)(C(7)H(4)NO(4))(4)(C(6)H(4)N(2))(4)], contains one Cd(II) atom, two 3-nitro­benzoate (NB) anions and two 3-cyano­pyridine (CPy) ligands. The two CPy ligands act as monodentate N(pyridine)-bonding ligands, while the two NB anions act as bidentate ligands through the carboxyl­ate O atoms. The centrosymmetric dinuclear complex is generated by application of inversion symmetry, whereby the Cd(II) atoms are bridged by the carboxyl­ate O atoms of two symmetry-related NB anions, thus completing the distorted N(2)O(5) penta­gonal–bipyramidal coordination sphere of each Cd(II) atom. The benzene and pyridine rings are oriented at dihedral angles of 10.02 (7) and 5.76 (9)°, respectively. In the crystal, C—H⋯N hydrogen bonds link the mol­ecules, enclosing R (2) (2)(26) ring motifs, in which they are further linked via C—H⋯O hydrogen bonds, resulting in a three-dimensional network. In addition, π–π stacking inter­actions between parallel benzene rings and between parallel pyridine rings of adjacent mol­ecules [shortest centroid-to-centroid distances = 3.885 (1) and 3.712 (1) Å, respectively], as well as a weak C—H⋯π inter­action, may further stabilize the crystal structure.