Diaqua-bis-(4-formyl-benzoato-?O(1))bis-(nicotinamide-?N(1))nickel(II).

ABSTRACT: In the title complex, [Ni(C(8)H(5)O(3))(2)(C(6)H(6)N(2)O)(2)(H(2)O)(2)], the Ni(II) cation is located on an inversion center and is coordinated by two 4-formyl-benzoate (FB) anions, two nicotinamide (NA) ligands and two water mol-ecules. The four O atoms in the equatorial plane around the Ni(II) cation form a slightly distorted square-planar arrangement, while the slightly distorted octa-hedral coordination is completed by the two N atoms of the NA ligands in the axial positions. The dihedral angle between the carboxyl-ate group and the adjacent benzene ring is 23.67?(8)°, while the pyridine and benzene rings are oriented at an angle of 89.04?(4)°. The coordinating water mol-ecule links with the carboxyl-ate group via an O-H?O hydrogen bond. In the crystal, N-H?O, O-H?O and weak C-H?O hydrogen bonds link the mol-ecules into a three-dimensional supra-molecular network. ?-? contacts between benzene rings [centroid-centroid distance = 3.8414?(7)?Å] may further stabilize the structure. A weak C-H?? inter-action also occurs.

SUBMITTER: Sertcelik M 

PROVIDER: S-EPMC3393204 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature