Pyrazolato-bridged 1-D Co(II) coordination polymer and dinuclear Ni(II) and Cu(II) complexes: Syntheses, crystal structures and magnetic properties

Three complexes of composition [Co3(Hdcp)2(phen)3(H2O)2]n · nH2O (1), [Ni2(Hdcp)2(H2O)4](Im)2 (2) and [Cu2(Hpca)2(H2O)2(Im)2] (3) have been synthesized via hydrothermal reactions and their structures have been characterized. Complex 1 exhibits one-dimensional linear chain structure. Complexes 2 and 3 are pyrazolato-bridged dinuclear complexes. The results of magnetic susceptibility measurements indicate that there exist antiferromagnetic interactions between Co(II) and Ni(II) centres in compounds 1 and 2, respectively.