高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (6): 908.

• 论文 • 上一篇    下一篇

过渡金属吡啶配离子的TCNQ电荷转移盐的合成和物理性质

李金山1, 冯乙巳1, 王者福1, 门振宇2   

  1. 1. 南开大学元素有机化学研究所, 天津, 300071;
    2. 南开大学物理系, 天津, 300071
  • 收稿日期:1997-05-19 出版日期:1998-06-24 发布日期:1998-06-24
  • 通讯作者: 李金山,男,52岁,副教授.
  • 作者简介:李金山,男,52岁,副教授.
  • 基金资助:

    国家自然科学基金

Synthesis and Physical Properties of TCNQ Charge-transfer Salts of Transition-metal Pyridine Complex Cations

LI Jin-Shan1, FENG Yi-Si1, WANG Zhe-Fu1, MEN Zhen-Yu2   

  1. 1. Institute of Elemento Organic Chemistry, Nankai University, Tianjin, 300071;
    2. Department of Physics, Nankai University, Tianjin, 300071
  • Received:1997-05-19 Online:1998-06-24 Published:1998-06-24

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被引次数

5

摘要： 合成了通式为[M(Py)m][TCNQ]n(M=Mn,m＝4;M＝Co,Ni,Cu,m＝2;TCNQ＝7,7,8,8-四氰基对苯醌二甲烷,n＝2,3)的8个过渡金属吡啶配离子的TCNQ电荷转移盐,通过元素分析、红外光谱、顺磁共振谱、光电子能谱、磁化率和电导率对这些电荷转移盐进行了表征,结果表明,在这些电荷转移盐分子中存在TCNQ-和TCNQ0,且TCNQ-与TCNQ0相互作用形成结构单元[TCNQ]n2-(n＝2,3),各个结构单元沿一维方向堆积形成分子柱,部分电荷从[TCNQ]n2-向[M(Py)m]2+转移,导致化合物中的金属表现为混合价态.其中3个电荷转移盐具有良好的导电性.

关键词: 7, 7, 8, 8-四氰基对苯醌二甲烷, 电荷转移盐, X射线光电子能谱, 磁性, 电导率

Abstract: Eight TCNQ charge-transfer salts of transition metal pyridine complex cations with the general formula [M(Py)m]n (M=Mn, m =4; M=Co, Ni, Cu, m =2; TCNQ= 7,7,8,8 tetracyanoquinodimethane, n =2,3) have been synthesized and characterized by elemental analysis, IRspectrum, ESR spectrum, X-ray photoelectron spectrum, magnetic susceptibility and electrical conductivity. The results indicate that there are TCNQ- and TCNQ0 in the molecules of these charge transfer salts; TCNQ- interacts with TCNQ0 to form a structural unit [TCNQ]n2-(n =2,3); these structural units stack along with one dimension direction to form molecular column; it leads the metals of these compounds to mixed valence state because partial charges transfer from [TCNQ]n2- to [M(Py)m]2+ ; three of these charge transfer salts show a good electrical conductivity.

Key words: 7,7,8,8-tetracyanoquinodimethane, Charge-transfer salt, X-ray photoelectron spectrum, Magnetism, Conductivity

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