Two New Nickel, Cobalt Coordination Polymers Based on Flexible 1,3-bis((1H-imidazolyl)-methyl)benzene Ligand: Syntheses, Structures and Magnetic Properties

Two new coordination polymers, namely, [Ni(HIP)(m-bix)(H2O)](n) (1), {[Co-2(oba)(2)(m-bix)(2)]center dot H2O}(n) (2) (m-bix = 1,3-bis(1H-imidazolyl)-methyl)benzene, H2HIP = 5-hydroxyisophthalic acid, oba = 4,4-oxybisbenzoic acid), were synthesized under hydrothermal conditions by reactions of transition metal salts of Ni(OAc)(2) and Co(OAc)(2) with the N-heterocyclic m-bix. There structures were characterized by techniques of single-crystal X-ray diffraction analysis, elemental analysis, infrared spectra (IR) and thermogravimetric analysis (TGA). Complex 1 and 2 both exhibit a 2D 4-connected sql network with the topology symbol of (4(4)center dot 6(2)) and are further extending into a 3D architecture via O-Hai...ai...ai...O hydrogen bonds. Moreover, the solid state magnetic properties of complex 1 and 2 have been investigated. [GRAPHICS] .