Download citation
Download citation

link to html
In the title centrosymmetric binuclear CuII complex, [Cu2(C7H4ClO2)4(C10H14N2O)2], the two CuII cations [Cu...Cu = 2.6314 (4) Å] are bridged by four 3-chloro­benzoate (CB) anions. The four carboxyl­ate O atoms around each CuII cation form a distorted square-planar arrangement, the distorted square-pyramidal coordination geometry being completed by the pyridine N atom of the N,N-di­ethyl­nicotinamide (DENA) mol­ecule. The dihedral angle between the benzene ring and the carboxyl­ate group is 4.49 (11)° in one of the independent CB ligands and 12.00 (10)° in the other. The benzene rings of the independent CB ligands are oriented at a dihedral angle of 84.13 (6)°. In the crystal, weak C—H...O hydrogen bonds link the binuclear complex mol­ecules into supra­molecular chains running along [101].

Download citation
Download citation

link to html
The title compound, [Cu(C7H4ClO2)2(C10H14N2O)2(H2O)], has twofold symmetry with the CuII cation and the O atom of the coordinating water mol­ecule located on the axis. The CuII cation is coordinated by two carboxyl­ate O atoms of chloro­benzoate (CB) anions, two N atoms of N,N-di­ethyl­nicotinamide (DENA) ligands and one water mol­ecule in a distorted N2O3 square-pyramidal geometry. The benzene and pyridine rings are oriented at a dihedral angle of 82.51 (6)°. In the anionic ligand, the carboxyl­ate group is twisted away from the attached benzene ring by 12.85 (11)°. In the crystal, O—H...O hydrogen bonds between the coordinating water mol­ecule and the carboxyl group link the complex mol­ecules into supra­molecular chains running along the c-axis direction.

Download citation
Download citation

link to html
In the crystal of the title CdII polymeric complex, [Cd(C7H4ClO2)2(C10H14N2O)(H2O)]n, the CdII cation is chelated by two chloro­benzoate anions and coordinated by two N,N-di­­ethyl­nicotinamide (DENA) ligands and one water mol­ecule in a distorted NO6 penta­gonal–bipyramidal geometry. The CdII cations are bridged by the pyridine N atom and carbonyl O atom of the DENA ligand to form a polymeric chain running along the b axis. Inter­molecular O—H...O hydrogen bonds between coordinating water mol­ecules and carboxyl­ate groups link adjacent chains into layers parallel to the bc plane. π–π contacts between benzene rings [shortest centroid–centroid distance = 3.912 (2) Å] further stabilizes the crystal structure. In the mol­ecule, weak C—H...O hydrogen bonds occur between the pyridine ring and carboxyl­ate groups; the dihedral angles between the carboxyl­ate groups and adjacent benzene rings are 4.6 (3) and 12.8 (3)°, while the benzene rings are oriented at a dihedral angle of 1.89 (13)°.
Follow Acta Cryst. E
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds