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高等学校化学研究 ›› 2003, Vol. 19 ›› Issue (1): 6-9.

• Articles • 上一篇    下一篇

Spectroscopic Studies of a Three-dimensional, Five-coordinated Copper(Ⅱ) Complex via Hydrogen Bonds: [Cu(PDA)(H2O)2](H2PDA=Pyridine-2,6-dicarboxylic Acid)

WANG Wen-zhen1, LIU Xin1, MENG Yi1, LIAO Dai-zheng1, JIANG Zong-hui1,2, YAN Shi-ping1, WANG Geng-lin1   

  1. 1. Department of Chemistry, Nankai University, Tianjin 300071, P. R. China;
    2. State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjijng 210093, P. R. China
  • 收稿日期:2001-12-25 出版日期:2003-01-24 发布日期:2011-08-06
  • 基金资助:

    Supported by the National Natural Science Foundation of China(No.20071019, 20071020, and 5017202) and the Research Fund for Doctoral Program of Higher Education.

Spectroscopic Studies of a Three-dimensional, Five-coordinated Copper(Ⅱ) Complex via Hydrogen Bonds: [Cu(PDA)(H2O)2](H2PDA=Pyridine-2,6-dicarboxylic Acid)

WANG Wen-zhen1, LIU Xin1, MENG Yi1, LIAO Dai-zheng1, JIANG Zong-hui1,2, YAN Shi-ping1, WANG Geng-lin1   

  1. 1. Department of Chemistry, Nankai University, Tianjin 300071, P. R. China;
    2. State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjijng 210093, P. R. China
  • Received:2001-12-25 Online:2003-01-24 Published:2011-08-06
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20071019, 20071020, and 5017202) and the Research Fund for Doctoral Program of Higher Education.

PDF (PC)

摘要： A new copper(Ⅱ) complex [Cu(PDA)(H2O)2] was synthesized and its structure was determined. Cu(Ⅱ) is five-coordinated in a tetragonal pyramid geometry. The two coordinating water molecules are different and the two Cu-O bond lengths differ by nearly 0.02 nm. The whole crystal is linked to form a three-dimensional network by means of hydrogen bonds. The X-band ESR spectrum shows three different g tensors with a well-resolved hyperfine structure in the gz signal, giving the ESR parameters gx=2.05, gy=2.065 and gz=2.29. The covalency of the coordinate bonds and the deviation from tetragonal pyramid geometry for the complex are discussed based on the ESR spectra.

关键词: Crystal structure, Three-dimensional network, ESR spectrum, Tetragonal pyramid geometry, Hydrogen bond, &pi, -&pi, interaction

Abstract: A new copper(Ⅱ) complex [Cu(PDA)(H2O)2] was synthesized and its structure was determined. Cu(Ⅱ) is five-coordinated in a tetragonal pyramid geometry. The two coordinating water molecules are different and the two Cu-O bond lengths differ by nearly 0.02 nm. The whole crystal is linked to form a three-dimensional network by means of hydrogen bonds. The X-band ESR spectrum shows three different g tensors with a well-resolved hyperfine structure in the gz signal, giving the ESR parameters gx=2.05, gy=2.065 and gz=2.29. The covalency of the coordinate bonds and the deviation from tetragonal pyramid geometry for the complex are discussed based on the ESR spectra.

Key words: Crystal structure, Three-dimensional network, ESR spectrum, Tetragonal pyramid geometry, Hydrogen bond, π-&pi, interaction