Syntheses,Structure and Properties of 2D Pb(II) Complex with kgd Topology

The reaction between Pb(Ac)2·3H2O and 2-(1H-imidazole-1-yl) acetate (Hima) produced a neutral 2D coordination polymer [Pb(ima)2]n (1). The single crystals were obtained by diffusing through agar gel aqueous solution and structurally characterized by single-crystal X-ray diffraction analysis. The polymer crystallized in the monoclinic space group P21/n with the cell parameters: a=0.875 0(2) nm, b=5.122 6(12) nm, c=13.292(3) nm, β= 93.570(4)°, V=594.6(2) nm3, Z=2. The [Pb(ima)2]n represents a (3,6)-connected 2D layer with kgd topology, which further stacks into 3D supramolecular networks through C -H … O weak interactions. The polymer is also characterized by IR, elemental analysis, fluorescent properties and thermogravimetric analysis.