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A series of Cd(II) coordination polymers based on flexible bis(triazole) and multicarboxylate ligands: topological diversity, entanglement and properties

Abstract

Eight Cd(II) coordination polymers {[Cd(btrb)(H2O)4][Cd2(btrb)(btec)(H2O)2]2(OH)25H2O}n (1(OH)25H2O), {[Cd(btrb)0.5(bptc)0.5]H2O}n (2H2O), {[Cd3(btrb)(btc)2]3H2O}n (33H2O), {[Cd(btrb)(ip)(H2O)]H2O}n (4), {[Cd(btrb)(MeOip)]H2O}n (5), {[Cd2(btrb)2(1,2-bdc)2]3H2O}n (6), {[Cd2(btrb)(bpdc)2]211H2O}n (7) and {[Cd(btrb)(bpdc)]H2O}n (8) were synthesized in hydrothermal condition. 1 shows an unprecedented (4,4,4,4)-connected 3D (electroneutral motif) + 1D (cationic motifs) → 3D polythreaded structure. The point symbol of the new 3D motif is (46)2(86)(4282102)(4383)4, or the second mot topology based on [Cd2(COO)] dimer. 2 shows an unprecedented (4,5,6)-connected 3D network with a point symbol of (4284)(4763)2(466683). 3 shows an unprecedented (3,8)-connected self-catenated 3D network based on the trimer Cd(II) cluster [Cd3(COO)2] with the point symbol of (426)2(4461176869). 4 exhibits the 2D + 2D → 2D interpenetration network based on 2D sql network. 5 exhibits a 4-connected network with a cds topology. 6 presents the first example of 2-fold interpenetrating 6-connected cco-6-Pbcm 3D network with the point symbol of (4768). 7 shows a (3,3,4,4)-connected 2D 3,3,4,4L72 network with a point symbol of (345)(482)(34583)(348292). 8 presents a (3,5)-connected self-catenated 2D 3,5L2 network with the point symbol of (426)(42678). The luminescence and thermal stability of 1–8 were investigated.

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Publication details

The article was received on 25 Jun 2017, accepted on 10 Sep 2017 and first published on 11 Sep 2017


Article type: Paper
DOI: 10.1039/C7CE01176H
Citation: CrystEngComm, 2017, Accepted Manuscript
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    A series of Cd(II) coordination polymers based on flexible bis(triazole) and multicarboxylate ligands: topological diversity, entanglement and properties

    K. Li, V. A. Blatov, T. Fan, T. Zheng, Y. Zhang, B. Li and B. Wu, CrystEngComm, 2017, Accepted Manuscript , DOI: 10.1039/C7CE01176H

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