化学学报 ›› 2002, Vol. 60 ›› Issue (10): 1794-1797. 上一篇    下一篇

研究论文

端接配体原子的电负性对磁耦合作用的影响

胡海泉;陈志达;刘成卜   

  1. 北京大学化学与分子工程学院.北京(100871);山东大学理论化学研究所,济南 (250100)
  • 发布日期:2002-10-15

Effect of Electronegativity of Atoms in Terminal Ligands on Magnetic Coupling Interactions

Hu Haiquan;Chen Zhida;Liu ChengBu   

  1. State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University.Beijing(100871);Institute of Theoretical Chemistry, Shandong University,Jinan(250100)
  • Published:2002-10-15

应用微扰理论,分析了端接配体原子的电负性对体系磁耦合作用的影响。研究 表明,随着端接配体原子电负性的增大,磁中心间的耦合作用减弱。应用密度泛函 理论和对称性破损方法对双核铜(II)模型体系进行了计算,计算结果验证了上述 结论。

关键词: 磁耦合, 电负性, 微扰化, 铜络合物

The influence of electronegativity of atoms in terminal ligands on magnetic coupling interactions has been analyzed with perturbation theory. It is shown that the interaction among the magnetic centers is reducecd with an increase in electronegativity of atoms in terminal ligands. By density functional theory and the broken symmetry approach the calculations have been performed on some binuclear Cu(II) molecules. The calcuated results supported the above conclusion.

Key words: magnetic coupling, electronegativity, perturbation theory, COPPER COMPLEX

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