科研之友
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摘要
Based on a V-shaped bisimidazole ligand and various dicarboxylic acids, nine entangled coordination polymers, namely, [Zn(o-bdc)(bips)]center dot 2H(2)O (1), [Zn-2(cdc)(2)(bips)(2)]center dot 2H(2)O (2), [Zn-2(bpedc)(2)(bips)(2)] (3), [Zn(odc)(bips)]center dot H2O (4), [Zn-2(sdc)(2)(bips)(2)]center dot 5H(2)O (5), [Co-2(sdc)(2)(bips)(2).H2O)]center dot 2H(2)O (6), [Cd-2(bpdc)(2)(bips)(2)]center dot 3H(2)O (7), [Cd-2(2,6-ndc)(2) (bips)(2)H2O)(2)]center dot H2O (8) and [Cd(1,4-ndc)(bips)]center dot DMF center dot H2O (9) (bips = bis(4-imidazol-ylphenyl)sulfone, o-H(2)bdc = o-phenyldicarboxylic acid, H(2)cdc = 1,4-cyclohexanedicarboxylic acid, H(2)bpedc = 4,4'-stibenedicarboxylic acid, H(2)odc = 4,4'-oxybisbenzoic acid, H(2)sdc = 4,4'-sulfonyldibenzoic acid, H(2)bpdc = biphenyl-4,4'-dicarboxylic acid, 1,4-H(2)ndc = naphthalene- 1,4-dicarboxylic acid, 2,6-H(2)ndc = naphthalene-1,4-dicarboxylic acid), have been synthesized and structurally characterized. Compound 1 exhibits a 2D -> 2D polycatenane of 3-fold interpenetrated sql layers. Compound 2 shows a 2D -> 3D polycatenane of 3-fold interpenetrated sql layers. Compound 3 displays a 2D -> 3D polycatenane of 5-fold interpenetrated sql layers. Compound 4 exhibits a 2-fold interpenetration of CdSO4 networks. Compound 5 presents a 2D -> 3D polycatenane by three-fold interpenetrated {4(2).6(3).8}(2) layers. Compound 6 features an unusual 2D -> 2D polycatenane framework assembled by the entanglement of sql layers containing 2-membered loops. Compound 7 exhibits a 1D -> 3D polycatenane by the 3-fold interpenetration of 3-connected ribbons. Compound 8 displays a 3-fold interpenetration of SrAl2 networks. Compound 9 exhibits a 4-fold interpenetration of dia networks in a [2 + 2] mode. Their luminescence properties were also measured.
