Hydrothermal Synthesis and Crystal Structure of a Cadmium(II) Polymer with One-dimensional Chain Structure: [Cd(bpy)(BDC)]_n·nbpy

摘要

A metal-organic coordination polymer [Cd(bpy)(BDC)]_n·nbpy (bpy = 2,2'-bipyridine, H_2BDC = terephthalic acid) has been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, TG and single-crystal X-ray diffraction. The complex crystallizes in monoclinic, space group C2/c with a = 15.723(5), b = 21.695(5), c = 7.576(5) A, β = 116.171(7)°, V = 2319.3(18) A~3, C_(28)H_(20)CdN_4O-4, M_r = 588.88, D_c = 1.686 g/cm~3, μ(MoKα) = 0.987 mm~(-1), F(000) = 1184, Z = 4, the final R = 0.0464 and wR = 0.0831 for 1882 observed reflections (I > 2σ(I)). It exhibits a three-dimensional network with channels constructed from one-dimensional coordination chains via C-H…O hydrogen bonds and significant aromatic π-π stacking interactions.