Synthesis,Crystal Structure and Luminescent Property of a New Indium(Ⅲ) Coordination Polymer

A new coordination complex [In(pda)1.5(bpy)]_n(1, H_2pda = 1,4-phenylenediacetic acid, bpy = 2,2?-bipyridine) has been synthesized under hydrothermal conditions and characterized by IR spectrum, elemental analysis, PXRD and single-crystal X-ray diffraction analysis. Crystal data for the title complex are as follows: monoclinic system, space group P21/n with a = 11.8015(7), b = 15.9551(10), c = 11.8858(8) ?, β = 94.844(6)o, V = 2230.0(2) ?~3, Mr = 559.25, Z = 4, F(000) = 1124, Dc = 1.666 g/cm3, μ(Mo Kα) = 1.106 mm-1, R = 0.0269 and wR = 0.0569 for 4534 observed reflections with I 2σ(I). Complex 1 displays a 3D supermolecular structure based on the 1D zizag chains. Fluorescence spectrum measurement indicates that complex 1 shows strong fluorescence emission with a maximum peak at 447 nm in the solid state at room temperature.