高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (9): 1369.

• 论文 • 上一篇    下一篇

多核配合物中金属间相互作用的电化学研究——取代三联吡啶配合物的合成、结构及电化学性质

尹业高1, 张恭启2, 黄永德2   

  1. 1. 荆州师专化学系, 荆州, 434100;
    2. 香港大学化学系, 香港
  • 收稿日期:1997-10-28 出版日期:1998-09-24 发布日期:1998-09-24
  • 通讯作者: 尹业高,男,43岁,博士,副教授.
  • 作者简介:尹业高,男,43岁,博士,副教授.

Electrochemical Studies on the Intermetallic Interaction in Polynuclear Complexes Preparation, Structure and Electrochemical Properties of Terpyridine Complexes

YIN Ye-Gao1, CHEUNG Kung-Kai2, Huang-Yong-De2   

  1. 1. Department of Chemistry, Jingzhou Teachers' College, Jingzhou, 434100;
    2. Department of Chemistry, The University of Hong Kong, Hong Kong
  • Received:1997-10-28 Online:1998-09-24 Published:1998-09-24

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摘要： 报道了2个取代三联吡啶配体(4-苯基-2,2':6',2"-三联吡啶(L1)和4'-二茂铁基-2,2':6',2"-三联吡啶(L2)的CO(Ⅱ)配合物([Co(Ⅱ)(L1)2](ClO4)2·4CH3cN(1)和[Co(Ⅱ)(L2)2](ClO4)2H2O(2))的合成及配体L2和配合物1和配合物2的晶体结构.电化学研究表明:在配合物2中,由于Co2+的作用,二茂铁基的氧化电位较配体L2中的二茂铁基的氧化电位有0.14V的正移动.同时发现,在配合物1中,Co2+抖的氧化还原电位较2中Co2+的氧化还原电位有0.06V的正移动.说明在配合物2的二茂铁中的Fe(Ⅱ)与Co(Ⅱ)之间存在着由分子片断传递的电子相互作用.

关键词: 二茂铁, 三联吡啶, 电子相互作用

Abstract: The syntheses, structures and electrochemistry of two Co(Ⅱ) complexes Co(Ⅱ)(L1)2 (ClO4)2·4CH3CN(1) and Co(Ⅱ)(L2)2 (ClO4)2·H2O(2) prepared from ligands L1(4'-phenyl-2,2':6',2″-terpyridine) and L2(4'-ferrocenyl-2,2':6',2″-terpyridine) are reported in this paper. The electrochemical investigation shows that the oxidation potential of ferrocene unit in 2 has a 0.14 V positive-shift from that of ferrocenyl group in L2 for the introduction of Co 2+ and, in the meantime, that the redox potential of cobalt centre in complex 2 has a 0.06 Vnegative-shift from that of cobalt centre in complex 1. This observation strongly suggests that in complex 2, there is an intermetallic interaction between Co(Ⅱ) and Fe(Ⅱ) conducted by the molecular fragment.

Key words: Ferrocene, Terpyridine, Electronic interaction

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