Chinese Journal of Applied Chemistry

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Synthesis and Coordination Mechanism of a Complex Formed Between D-Mannose Oxime and Copper Cations with Mixed-valence

ZHAO Jing1,2, ANG Heng3,ZHU Guoyi1*   

  1. (1.State Key Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;
    2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China;
    3.Instrumental Analysis Center,Hebei Normal University,Shijiazhuang 050024,China)
  • Received:2011-11-28 Revised:2012-03-23 Published:2012-10-10 Online:2012-10-10
  • Contact: Guoyi Zhu

Abstract: We synthesized a complex formed between D-mannose oxime and copper cations with mixed-valence. The title compound was characterized by means of elemental analysis, IR, thermal analysis and XPS etc. The results indicate that the compound is a tetranuclear copper complex having two Cu(Ⅱ) and two Cu(Ⅰ) metal centers. One Cu(Ⅱ) atom is coordinated by two nitrogen atoms and two oxygen atoms from two ligands while the other Cu(Ⅱ) coordinates with one nitrogen atom and three oxygen atoms. Each Cu(Ⅰ) atom bonds to three oxygen atoms and one hydroxyl ion. The four copper atoms are linked by three deprotonated D-mannose oxime molecules to form a chain. The pH plays a decisive role in the formation of the complex.

Key words: D-mannose oxime, mixed-valence, copper complex, redox

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