The synthesis and crystal structure of a new 1-D Co(II) complex based on boronic acid ligand

The title complex, [Co(ncpb)(mu-4,4'-bpy)(H2O)(2)](4,4'-bpy) (1) (4,4'-bpy = 4,4'-bipyridine, ncpb = 5-nitro-4-carboxylatophenylboronic acid), was synthesized from a hydrothermal reaction of CoCl2 center dot 6H(2)O, ncpb ligand and 4,4'-bpy, and characterized by single-crystal X-ray diffraction analysis. The complex 1 crystallizes in monoclinic space group C2/c with a = 27.104(2) angstrom, b = 11.3566(8) angstrom, c = 13.5065(10) angstrom, beta = 113.0220(10)degrees. The structure of 1 is composed of discrete 4,4'-bpy moleculars and 1-D chains originating from terminal ncpb ligands and mu-4,4'-bpy molecules. The chains are further connected through rich intermolecular O-H center dot center dot center dot O and O-H center dot center dot center dot N hydrogen bonds to genenate a 3-D supramolecular architecture.