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Issue 20, 2011
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Zinc(II) and cadmium(II) coordination polymers mediated by rationally designed symmetrical/asymmetrical V-shaped heterocyclic aromatic ligands exhibiting different supramolecular architectures

Shu-Jun Fu,a  Li Wang,a  Tao Tao,a  Bin Hu,a  Wei Huang*a  and  Xiao-Zeng Youa 
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* Corresponding authors

a State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, P. R. China
E-mail: whuang@nju.edu.cn
Fax: +86-25-83314502
Tel: +86-25-83686526

Abstract

Two novel V-shaped heterocyclic aromatic ligands, i.e., 3,4-diimidazol-thiophene (Lsym, symmetrical) and 3-imidazol-4-pyridinyl-thiophene (Lasym, asymmetrical), have been designed and prepared from the carbon–nitrogen and carbon–carbon bond cross-coupling reactions. X-Ray single-crystal structural studies for these ligands and their zinc(II) and cadmium(II) fluorescent coordination polymers reveal that they are formulated as {[Zn(Lasym)2]3(ClO4)6(H2O)}n (1), {[Cd(Lasym)2Cl2]}n (2), {[Zn(Lsym)2(CH3OH)2](NO3)2(CH3OH)2}n (3) and {[Cd(Lsym)2(CH3OH)2](NO3)2(CH3OH)2}n (4). The coordination geometry of the metal centers and the molecular conformation of the symmetrical/asymmetrical V-shaped ligands Lsym and Lasym, namely variation of the bite angle θ between the two coordination nitrogen atoms and the central sulfur atom of thiophene ring as well as the dihedral angles between adjacent aromatic rings, play important roles in tuning the different supramolecular architectures of their metal complexes.

Graphical abstract: Zinc(ii) and cadmium(ii) coordination polymers mediated by rationally designed symmetrical/asymmetrical V-shaped heterocyclic aromatic ligands exhibiting different supramolecular architectures

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Publication details

The article was received on 04 May 2011, accepted on 06 Jul 2011 and first published on 18 Aug 2011


Article type: Paper
DOI: 10.1039/C1CE05516J
Citation: CrystEngComm, 2011,13, 6192-6199
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    Zinc(II) and cadmium(II) coordination polymers mediated by rationally designed symmetrical/asymmetrical V-shaped heterocyclic aromatic ligands exhibiting different supramolecular architectures

    S. Fu, L. Wang, T. Tao, B. Hu, W. Huang and X. You, CrystEngComm, 2011, 13, 6192
    DOI: 10.1039/C1CE05516J

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