Synthesis and magnetic properties of novel copper(II)-lanthanoid(III) heterobinuclear oxamido bridged complexes |
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| Authors: | Yan-Tuan Li Zong-Hui Jiang Shu-Lin Ma Xiao-Ying Li Dai-Zheng Liao Shi-Ping Yan Geng-Lin Wang |
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| Affiliation: | (1) Department of Chemistry, Nankai University, Tianjin, P. R. of China;(2) Present address: Tianjin College of Commerce, Tianjin, P. R. of China |
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| Abstract: | Summary Seven novel  -oxamido hetero-metal binuclear complexes have been prepared and characterized, namely [Cu(oxae)-Ln(NO2-phen)2 (ClO4)](ClO4)2, where oxae denotes the N,N -bis(2-aminoethyl)oxamido dianion, NO2-phen denotes 5-nitro-1,10-phenanthroline and Ln is Nd, Eu, Gd, Tb, Dy, Ho or Er. The magnetic susceptibility of [Cu(oxae)Gd(NO2-phen)2(ClO4)](ClO4)2 was measured over a 4–300 K temperature range and the observed data were successfully simulated by an equation based on the spin Hamiltonian operator  = -2J 1·2, giving the exchange integral for GdIIIJ(Cu-Gd) = -1.52cm-1. This indicated a weak antiferromagnetic interaction between the CuII and CdIII ions.Visiting scholar: Qufu Normal University.Visiting scholar: Tianjin Second Medical College. |
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