高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (3): 332.

• 论文 • 上一篇    下一篇

μ-4,4'-联吡啶桥联三核Cu(Ⅱ)配合物的合成和磁性

郝松琪, 张小丽, 姜宗慧, 廖代正, 阎世平, 王耕霖   

  1. 1. 南开大学化学系, 天津, 300071;
    2. 南京大学配位化学国家重点实验室
  • 收稿日期:1993-03-09 修回日期:1993-10-28 出版日期:1994-03-24 发布日期:1994-03-24
  • 通讯作者: 王耕霖
  • 作者简介:郝松琪,男,56岁,副教授.
  • 基金资助:

    国家自然科学基金

Synthesis and Magnetic Properties of Trinuclear Copper(Ⅱ)Complexes Containing μ-4, 4'-Bipyridine

HAO Song-Qi, ZHANG Xiao-Li, JIANG Zong-Hui, LIAO Dai-Zheng, YAN Shi-Ping, WANG Geng-Lin   

  1. 1. Chem. Dept. Nankai Univ., Tianjiin, 300071;
    2. National Key Lab. of Coord. Chem. of Nanjing Univ.
  • Received:1993-03-09 Revised:1993-10-28 Online:1994-03-24 Published:1994-03-24

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摘要： 合成了3种以4,4'-联吡啶为桥联配体的三核环状Cu(Ⅱ)配合物[Cu)3(4,4'-bpy)3·(phen)3](ClO4)6·2H2O(1)、[Cu3(4,4'-bpy)3](bpy)3](ClO4)6·H2O(2)和[Cu3(4,4'-bpy)3·(NO2-phen)3](ClO4)6·6H2O(3).经元素分析、电导、IR、电子光谱、ESR、磁化率等方法进行了表征,推定该配合物具有以4,4'-联吡啶为扩展桥的结构。利用Heisenberg模型求得交换参数J值为-0.23cm-1(1)和-0.90cm-1(3),表明配合物中金属离子间仅有很弱的反铁磁交换作用。

关键词: 4, 4'-联吡啶, Cu(Ⅱ)-Cu-(Ⅱ)Cu(Ⅱ), 磁性

Abstract: Three new cyclic trinuclear copper(Ⅱ) complexes containing4,4' -bipyridine(4,4' -bpy) which acts as the bridging ligand were synthesized, namely [Cu3 (4, 4' -bpy)3(phen)3] (ClO4)6 ·2H2O (1; phen= O-phenanthroline),[Cu3 (4, 4'-bpy)3 (bpy)3] (ClO4)6·H2O (2; bpy=2, 2'-bipyridyl),and [Cu3(4,4' -bpy)3(NO2-phen)3] (ClO4)6·6H2O (3; NO2-phen=5-nitro-o-phenanthroline).Based on IR,elemental analyses, conductivity measurement, electronic spectra, ESRand susceptibility these complexes are proposed to have extended 4, 4' -bipyridine-bridged structure with Cu (Ⅱ) in a distorted square environment.The variable-temperature magnetic susceptibilities of 1 and 3 have been measured (4-300K).Based on the Heisenberg model,the exchange parameter, J, was found to be -0.23cm-1 (for 1) ; -0.90 cm-1( for 3),indicating that a very weak antiferromagnetic spin exchange interaction occurs between the copper(Ⅱ) ions.

Key words: μ-4,4'-Bipyridine, Copper(Ⅱ)-copper(Ⅱ)-copper(Ⅱ), Magnetism

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