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Journal of Coordination Chemistry Volume 58, 2005 - Issue 14
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Original Articles

Synthesis, crystal structure and magnetic properties of a new macrocyclic trinuclear CuII-CuII-CuII complex

Jing Chen Department of Chemistry, Nankai University, Tianjin 300071, P.R. China
,
Dai-Zheng Liao Department of Chemistry, Nankai University, Tianjin 300071, P.R. China
,
Zong-Hui Jiang Department of Chemistry, Nankai University, Tianjin 300071, P.R. China; State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, P.R. ChinaCorrespondence[email protected]
&
Shi-Ping Yan Department of Chemistry, Nankai University, Tianjin 300071, P.R. China
Pages 1169-1176 | Received 24 May 2004, Accepted 14 Sep 2004, Published online: 25 Jan 2007
 
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Abstract

A new oxamido-bridged trinuclear copper(II) complex [(CuL)2Cu](ClO4)2·0.5H2O (L = the dianion of 2,3-dioxo-5,6,14,15-dibenzo-7,13-bis(ethoxycarbonyl)-1,4,8,12-tetraazacyclotetradeca-7,12-diene) has been synthesized by self-assembly and characterized. X-ray diffraction analysis reveals that the title complex is monoclinic, space group P21, with a = 16.213(5), b = 9.811(3), c = 18.802(6) Å, β = 96.790(5)°. The central copper(II) ion lies in a distorted octahedral environment. Terminal coppers have square pyramidal coordination geometry. Magnetic measurements show there is strong antiferromagnetic interaction between the central and the terminal Cu(II) ions.

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 20331010) and the Tianjin Natural Science Foundation of China (033602011).

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