Tetra-aqua-bis(nicotinamide-?N)cobalt(II) bis-(2-fluoro-benzoate).

ABSTRACT: The title complex, [Co(C(6)H(6)N(2)O)(2)(H(2)O)(4)](C(7)H(4)FO(2))(2), contains one Co(II) atom (site symmetry ), two monodentate nicotin-amide (NA) ligands, four coordinated water mol-ecules and two 2-fluoro-benzoate (FB) anions. The four O atoms in the equatorial plane around the Co atom 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 group and the adjacent benzene ring is 29.8?(3)°, while the pyridine and benzene rings are oriented at a dihedral angle of 7.97?(12)°. In the crystal structure, mol-ecules are linked by O-H?O, N-H?O and N-H?F hydrogen bonds, forming an infinite three-dimensional network. ?-? Contacts between the pyridine and benzene rings [centroid-centroid distance = 3.673?(3)?Å] may further stabilize the crystal structure.

SUBMITTER: Ozbek FE 

PROVIDER: S-EPMC2968619 | biostudies-literature | 2009 Feb

REPOSITORIES: biostudies-literature