Synthesis,Crystal Structure and Luminescent Property of a 2-D Hybrid Constructed from [Pb_2I_4] Subunits

A novel organic-inorganic hybrid compound, [Pb2I4（bipy）], （bipy = 4,4′-bipyridine）, was synthesized by self-assembly and its structure was determined by X-ray crystallography method The crystal belongs to the monoclinic system, space group P2 1/c with α = 4.4691（9）, b = 15.385（3）, c = 14.136（3） A, β = 93.75（3）°, V= 969.9（3） A^3, Mr = 1078.16, Dc= 3.692 g/cm^3, F（000） = 916, μ = 23.688 mm^-1, Z = 2, the final R = 0.0395 and wR = 0.0887 for 1557 observed reflections with I 〉 2σ（I）. The title compound presents a two-dimensional layer-like structure constructed from [PbI5N] octahedron and bis-bridging ligand 4,4′-bipyridine. The fluorescence of the title compound is also discussed in this communication.