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Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (15): 1789-1794. Previous Articles     Next Articles

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配合物[Cr(III)(4-Me-SA)(en)2]Cl•0.5CH3OH的合成、表征及与β-环糊精的包合作用

段文胜, 刘斌, 孙占国, 杨斌盛*   

  1. (山西大学分子科学研究所 化学生物学与分子工程教育部重点实验室 太原 030006)
  • 投稿日期:2010-11-29 修回日期:2011-04-01 发布日期:2011-04-12
  • 通讯作者: 杨斌盛 E-mail:yangbs@sxu.edu.cn

Synthesis, Characterization and Interaction with β-Cyclodextrin of Complex [Cr(4-Me-SA)(en)2]Cl•0.5CH3OH

DUAN Wen-Sheng, LIU Bin, SUN Zhan-Guo, YANG Bin-Sheng   

  1. (Institute of Molecular Science, Key Laboratory of Chemical Biology of Molecular Engineering of Education Ministry, Shanxi University, Taiyuan 030006)
  • Received:2010-11-29 Revised:2011-04-01 Published:2011-04-12
  • Contact: BinSheng YANG E-mail:yangbs@sxu.edu.cn

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A new chromium(III) complex [Cr(III)(4-Me-SA)(en)2]Cl•0.5CH3OH (4-Me-SA＝4-CH3-sali- cylic acid, en＝ethylenediamine) was synthesized and characterized by elemental analysis and X-ray crystallography. The interaction of β-cyclodextrin and chromium(III) complex [Cr(III)(4-Me)(en)2]Cl• 0.5CH3OH (I) or [Cr(III)(SA)(en)2]Cl (II) (SA＝salicylic acid) were studied by UV-Vis spectra, fluorescence spectra and conductivity measurement. The inclusion constants at different temperature were calculated and the main driving force of the inclusion was also discussed. The results indicated that an inclusion of β-cyclodextrin and chromium(III) complex was formed in molar ratio of 1∶1 at 298 K. The presence of hydrophobic group methyl is advantageous to inclusion. The reactions with EDTA indicated that the stability of Cr(III) complex was increased when it was included by β-cyclodextrin.

Key words: chromium complexes, 4-Me-salicylic acid, β-cyclodextrin, stability