| Synthesis,characterization and magnetism of copper(Ⅱ)-lan-thanide(Ⅲ) heterobimetalic complexes with N,N'-oxamidobis-(benzoato) cuprate (Ⅱ) |
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| 作者姓名： | 李延团 焉翠蔚 曾宪诚 廖代正 |
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| 作者单位： | Department of Chemistry，Qufu，Normal University，Qufu，Shandong 273165，China Department of Chemistry，Sichuan University，Chengdu，Sichuan 610064，China，Department of Chemistry，Qufu，Normal University，Qufu，Shandong 273165，China，Department of Chemistry，Sichuan University，Chengdu，Sichuan 610064，China，Department of Chemistry，Nankai University，Tianjin 300071，China |
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| 基金项目： | Project supported by the Natural Science Foundation of Shandong Province (No. Q99B12)，the National Natural Science Foundation of China (No. 29873031) |
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| 摘 要： | Seven new μ-oxamido copper(Ⅱ)-lanthanide(Ⅲ)hetero-bitnetalic complexes described by the fonnula Cu(obbz)Ln-(Ph-phen)2NO3(Ln=La,Nd,Eu,Gd,Tb,Ho,Er),where obbz denotes the oxamidobis(benzoato)and Ph-phen represents 5-phenyl-1,10-phenanthroline,have been synthesized and characterized by the elemental analyses,spectro-scopic(IR,UV,ESR)studies,magnetic moments(at room temperature)and molar conductivity measurement.The temperature dependence of the magnetic susceptibility of Cu(obbz)Gd(Ph-phen)2NO3 complex has been measured over the range 4.2-300 K.The least-squares fit of the experimental susceptibilities based on the spin Hamiltonian operator,H=-2JS1 S2,yielded J= 1.28 cm-1,a weak ferromagnetic coupling.A plausible mechanism for a ferromagnetic coupling between Gd(Ⅲ)-Cu(Ⅱ)is discussed in terms of spin-polarization.
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| 关 键 词： | Copper(Ⅱ)-lanthanide(Ⅲ) heterobimetalic complexes ferromagnetic spin-coupling synthesis |
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