Syntheses, Crystal Structures, Luminescent and Magnetic Properties of Two 1D Cadmium(II) and Nickel(II) Coordination Polymers

Two 1D cadmium(II) and nickel(II) coordination polymers, namely {[M-2(mu(3)-L)(phen)(3)]center dot 5H(2)O}(n) (M=Cd (1), Ni (2)), were constructed hydrothermally using H4L (H4L=3-(2,4-dicarboxyphenyl)-2,6-pyridinedicarboxylic acid), phen (phen=1,10-phenanthroline), and cadmium or nickel chlorides. Single-crystal X-ray diffraction analyses reveal that both compounds are isostructural and crystallize in the orthorhombic system, space group Pbca. Compound 1 or 2 feature a 1D metal-organic chain, which is assembled to a 2D supramolecular network through O-H center dot center dot center dot O hydrogen bond. The luminescent and magnetic properties for two compounds were also investigated.