<i>trans</i>-Diaquabis(3-hydroxybenzoato-<i>O</i>)bis(nicotinamide-<i>N</i><sup>1</sup>)cobalt(II)
作者:T. Hökelek、H. Necefouglu
DOI:10.1107/s0108270199006733
日期:1999.9.15
The title compound, [Co(C7H5O3)(2)(C6H6N2O)(2)(H2O)(2)]. is a monomeric and centrosymmetric cobalt complex. It contains two 3-hydroxybenzoate anions, two nicotinamide (NA) molecules and two water molecules as ligands. Each ligand is monodentate, The two nearest carboxylate O atoms and the two water O atoms form a slightly distorted square-planar arrangement around the Co atom [with distances of 2.099 (3) and 2.132 (3) Angstrom, respectively], while the distorted octahedral coordination is completed by the pyridine N atoms of the NA ligands at a distance of 2.139 (4) Angstrom. There is an intramolecular hydrogen bond between the nicotinamide N and O atoms [N ... O 2.228(6) Angstrom], and the hydroxybenzoate and water O atoms form inter- [2.662(5) Angstrom] and intramolecular [2.586 (5) Angstrom] hydrogen bonds, respectively, with the non-coordinated O atom of the carboxylate group.