Issue 38, 2017

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 under hydrothermal conditions. 1 shows an unprecedented (4,4,4,4)-connected 3D (electroneutral motif) + 1D (cationic motif) → 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 the [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 Cd(II) trimer cluster [Cd3(COO)2] with a point symbol of (42·6)2(44·611·76·86·9). 4 exhibits a 2D + 2D → 2D interpenetration network based on the 2D sql network. 5 exhibits a 4-connected network with a cds topology. 6 presents the first example of a 2-fold interpenetrating 6-connected cco-6-Pbcm 3D network with a 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 a point symbol of (42·6)(42·67·8). The luminescence and thermal stability of 1–8 were investigated.

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

Supplementary files

Article information

Article type
Paper
Submitted
25 Jun 2017
Accepted
10 Sep 2017
First published
11 Sep 2017
This article is Open Access
Creative Commons BY-NC license

CrystEngComm, 2017,19, 5797-5808

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, 19, 5797 DOI: 10.1039/C7CE01176H

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