【摘要】 本文合成了一组新的不对称的双核配合物,[Cu₂（C₂O₄）₂terp]和〔Cu Zn（C₂O₄）₂terp〕（图1）,terp表示联三吡啶。配合物〔Cu₂（C₂O₄）2terp〕的变温磁化率已测,其数值已用最小二乘法与Bleaney-Bowers方程拟合,求得交换积分J=-47.20cm^-1。文中还用Kahn理论解释了这种较弱的反铁磁自旋交换作用。更多还原

【Abstract】 New asymmetric binuclear complexes [Cu2(C2O4)2terp] and [CuZn(C2O4) terp] (Fig.1) have been synthesized by reaction of K2Cu(C2O)·2H2O, Zn(Ac)2·2H2O or Cu(Ac)2·H2O and terp, where terp denotes terpyridyl. Based on IR,ESR,elemental analyses and electronic spectra, the complexes are proposed, to have oxalato-bridged structure and to consist of Cu(II) in a planar enviroment and another Cu(II) (or Zn(II)) in a tetragonal pyramidal enviroment. The complex C Cu2(C2O4)2terp] has been characterized with vailable-temperature suseptibility and data were least-squares fit to the Blenaey-Bowers equation. The exchange integral, J, was found to be -47.20 cm-1, indicating that a weaker antiferromagnetic spin-exchange interation operates between the metal ions. The weaker interaction can be interpreted using Kahn’s theory.更多还原