| Synthesis and cationic selectivity studies of novel calix[4]arene derivatives containing heteroatom at the lower rim |
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| 作者单位： | WANG Hao（State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China） ;
LI Zhe（State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China） ;
LIU Yu（State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China） ; |
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| 基金项目： | 国家自然科学基金;教育部博士基金 |
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| 摘 要： | A series of calixarene derivatives 2―5 containing heteroatom at the lower rim have been synthesized. 1H NMR studies and crystallographic structures demonstrated that the calix4]arene derivatives adopted cone conformations. Their cationic binding abilities and selectivities towards heavy and tran- sition metal ions have been evaluated by solvent extraction of aqueous metal picrates. The obtained results indicated that the introduction of nitrogen, sulfur, and/or phosphor atoms to the calix4]arene framework could effectively enhance their binding ability and selectivity for heavy and transition metal ions, such as Pb2 or Ag .
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| 收稿时间： | 2 July 2005 |
| 修稿时间： | 18 April 2007 |
Synthesis and cationic selectivity studies of novel calix[4]arene derivatives containing heteroatom at the lower rim |
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| Authors: | WANG Hao LI Zhe LIU Yu |
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| Institution: | State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China |
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| Abstract: | A series of calixarene derivatives 2–5 containing heteroatom at the lower rim have been synthesized. 1H NMR studies and crystallographic structures demonstrated that the calix4]arene derivatives adopted cone conformations.
Their cationic binding abilities and selectivities towards heavy and transition metal ions have been evaluated by solvent
extraction of aqueous metal picrates. The obtained results indicated that the introduction of nitrogen, sulfur, and/or phosphor
atoms to the calix4]arene framework could effectively enhance their binding ability and selectivity for heavy and transition
metal ions, such as Pb2+ or Ag+.
Supported by the National Natural Science Foundation of China (Grant Nos. 90306009, 20673061) and Special Fund for Doctoral
Program from the Ministry of Education of China (Grant No. 20050055004). |
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| Keywords: | calix[4]arene synthesis cationic selectivity solvent extraction |
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