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Vol. 27 No. 1 (2015): Vol 27 Issue 1

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Synthesis, Crystal Structure and Magnetic Properties of 1D Coordination Polymer {[Co(cpna)(H2biim)].H2O}n

https://doi.org/10.14233/ajchem.2015.16664
Hong-Jin Li
School of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan, P.R. China
Zhu-Qing Gao
School of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan, P.R. China
Jin-Zhong Gu
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P.R. China

Corresponding Author(s) : Zhu-Qing Gao

zqgao2008@163.com

Asian Journal of Chemistry, Vol. 27 No. 1 (2015): Vol 27 Issue 1

Abstract

A coordination polymer, namely {[Co(cpna)(H2biim)]·H2O}n (1) has been constructed hydrothermally using H2cpna [H2cpna = 5-(2'-carboxylphenyl)nicotic acid], H2biim (H2biim = 2,2'-biimidazole) and CoCl2·6H2O. The compound crystallizes in the triclinic system, space group P-1 with a = 7.8002 (5) Å, b = 10.5401 (13) Å, c = 12.6954 (10) Å, a = 66.519 (10), b = 74.768 (6), g = 84.428 (7)º, V = 923.66 (15) Å3, Dc = 1.626 g cm-3, Z = 2, R = 0.0456 and wR = 0.1032 (I > 2s (I)). The cpna2- ligands bridge the adjacent Co(II) ions to form a 1D double-chain, which is further assembled into a 3D supramolecular framework by N-H···O hydrogen bonding and p-p stacking interactions. Magnetic susceptibility measurement indicates {[Co(cpna)(H2biim)]·H2O}n shows a weak antiferromagnetic coupling between the Co(II) ions. CCDC: 952137.

Keywords

Coordination polymer Cobalt(II) compound Magnetic properties
Li, H.-J., Gao, Z.-Q., & Gu, J.-Z. (2014). Synthesis, Crystal Structure and Magnetic Properties of 1D Coordination Polymer {[Co(cpna)(H2biim)].H2O}n. Asian Journal of Chemistry, 27(1), 39–42. https://doi.org/10.14233/ajchem.2015.16664
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