Study on two-dimensional layered Ni(II) coordination polymer constructed with mixed ligands

A two-dimensional layered coordination polymer [Ni(bbim-4)(L1) ] n(bbim-4 = 1,1'-(1,4-butanediyl) bis(imidazole),L1 = p-Phenylenediacetic acid anions) was synthesized by hydrothermal reaction and characterized by elemental analysis,IR spectroscopy,powder and single-crystal X-ray crystallography.The crystal belongs to monoclinic system,space group P2 1 / n.The main cell parameters are: a = 9.772 8(3),b = 8.634 0(3),c = 11.154 0(3),β = 92.755(2),Z = 2,V = 940.07(5)3,Dc =1.558 mg.mm-3,μ(CuKα) =1.804 mm-1,F(000) =460.The coordination polymer possesses 2D polymeric layers,and the layers are connected through van der Waals forces into 3D supramolecular structures.The thermal stability of coordination polymer was studied by thermogravimetric analysis.