| Abstract: Reaction of H3IDC (H3IDC=imidazole-4,5-dicarboxylic acid), bix (bix=1,4-bis(imidazol-1-ylmethyl)benzene) with CdCl2 under hydrothermal condition, yielded a new 3D cadmium(Ⅱ) coordination polymer [Cd(HIDC)(bix)0.5]n(1), which was structurally characterized by elemental analysis, infrared spectroscopy, thermal gravimetric analysis, and single-crystal X-ray diffraction. X-ray diffraction crystal structural analysis reveals its crystallizes in monoclinic, space group P21/n with a=1.155 30(17) nm, b=1.052 68(16) nm, c=1.198 71(18) nm, β=110.245(2)°, V=1.367 8(4) nm3, Z=4, Dc=1.873 g·cm-3, F(000)=756, the final R1=0.033 6, and wR2=0.091 1 for 2 000 observed reflections with I>2σ(I). In 1, each Cd(Ⅱ) ion is six-coordinated with a distorted octahedral coordination geometry, and each μ3-HIDC2 acts as a bridge to bond three Cd(Ⅱ) ions, leading to an infinite 2D brickwall-like network of [Cd( μ3-HIDC)]n, which are further linked through μ2-bix to generate an infinite 3D layered-pillared framework architecture of [Cd(HIDC)(bix)0.5]n. Furthermore, the luminescent property of 1 was also investigated at room temperature in the solid state. CCDC: 772779. |
