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

ABSTRACT: In the title complex, [Co(C(8)H(5)O(3))(2)(C(6)H(6)N(2)O)(2)(H(2)O)(2)], the Co(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 Co(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 23.91?(9)°, while the pyridine and benzene rings are oriented at a dihedral angle of 88.84?(4)°. The coordinating water mol-ecule links with the carboxyl-ate group via an intra-molecular 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. ?-? stacking between the parallel benzene rings of adjacent mol-ecules [centroid-centroid distance = 3.8505?(8)?Å] may further stabilize the structure. A weak C-H?? inter-action also occurs in the crystal.

SUBMITTER: Sertcelik M 

PROVIDER: S-EPMC3414145 | biostudies-literature | 2012 Aug

REPOSITORIES: biostudies-literature