Auxiliary Ligand Oriented Cd~(Ⅱ)-flexible Dicarboxylic Acid Coordination Frameworks:Syntheses, Structures and Properties

【Author】

CHEN Yong-Qiang;ZHAI Jia-Xin;TIAN Yuan;LIU Xiu-Ping;College of Chemistry and Chemical Engineering, Jinzhong University;

【Institution】

College of Chemistry and Chemical Engineering, Jinzhong University;

【Abstract】

Two different Cd~(Ⅱ) coordination frameworks [Cd(L1)(L2)]_∞(1) and [Cd(L1)-(L3)(H_2O)]_∞(2) based on a flexible dicarboxylic acid ligand were obtained by introducing two different nitrogen heterocyclic auxiliary ligands(L1 = 3,3'-[1,3-benzenebis(carbonylimino)]bi(benzoate), L2 = 1,3-bi(4-pyridyl)propane, L3 = 4,4'-bipyridine). Complex 1 crystallizes in triclinic, space group P■ with a = 8.7415(5), b = 12.2247(7), c =16.2415(10) ?, β = 95.6790(10)°, V = 1525.11(16) ?~3, D_c = 1.553 mg·m~(-3), C_(35)H_(28)CdN_4O_6, M_r = 713.02, F(000) = 724, μ(MoKα) = 0.770 mm~(–1), Z = 2, R/wR(I > 2σ(I))~a = 0.0302/0.0773. However, complex 2 crystallizes in monoclinic, space group P2_(1/n) with a = 11.4986(7), b = 23.0911(14), c = 11.9943(8) ?, β = 115.9500(10)°, V = 2863.6(3) ?~3, D_c = 1.598 mg·m~(-3), C_(32)H_(24)CdN_4O_7, M_r = 688.96, F(000) = 1392, μ(MoKα) = 0.820 mm~(–1), Z = 4, R/wR(I > 2σ(I))~a = 0.0283/0.0631. The structures of two complexes were characterized. Complexes 1 and 2 have different one-dimensional(1D) chain structures. In addition, we have also made a preliminary study on the properties of the two complexes.

【Keywords】

coordination framework;;auxiliary ligand;;structure;;property

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