Crystal structure of bis-(μ-3-nitro-benzoato)-κ3O,O':O;κ3O:O,O'-bis-[bis-(3-cyano-pyridine-κN1)(3-nitro-benzoato-κ2O,O')cadmium].
The asymmetric unit of the title compound, [Cd2(C7H4NO4)4(C6H4N2)4], contains one CdIIatom, two 3-nitro-benzoate (NB) anions and two 3-cyano-pyridine (CPy) ligands. The two CPy ligands act as monodentate N(pyridine)-bonding ligands, while the two NB anions act as bidentate ligands through the carboxyl-ate O atoms. The centrosymmetric dinuclear complex is generated by application of inversion symmetry, whereby the CdIIatoms are bridged by the carboxyl-ate O atoms of two symmetry-related NB anions, thus completing the distorted N2O5penta-gonal-bipyramidal coordination sphere of each CdIIatom. 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 mol-ecules, enclosingR22(26) ring motifs, in which they are further linkedviaC-H⋯O hydrogen bonds, resulting in a three-dimensional network. In addition, π-π stacking inter-actions between parallel benzene rings and between parallel pyridine rings of adjacent mol-ecules [shortest centroid-to-centroid distances = 3.885 (1) and 3.712 (1) Å, respectively], as well as a weak C-H⋯π inter-action, may further stabilize the crystal structure.
Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Turkey.
Tuncer
T
Hökelek
SANAEM, Saray Mahallesi, Atom Caddesi, No. 27, 06980 Saray-Kazan, Ankara, Turkey.
Nurcan
N
Akduran
Department of Chemistry, Kafkas University, 36100 Kars, Turkey.
Azer
A
Özen
Department of Chemistry, Kafkas University, 36100 Kars, Turkey.
Güventürk
G
Uğurlu
Department of Chemistry, Kafkas University, 36100 Kars, Turkey; International Scientific Research Centre, Baku State University, 1148 Baku, Azerbaijan.
Hacali
H
Necefoğlu
benzoic acid; cadmium; crystal structure; transition metal complex