Volume 31, Issue 5 pp. 679-683
Full Paper

Sulfate Binding with a Tripodal Tris(4-pyridylurea) Receptor

Rui Zhang

Rui Zhang

Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shannxi 710069, China

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Yanlei Zhang

Yanlei Zhang

Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shannxi 710069, China

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Jiamin Wang

Jiamin Wang

State Key Laboratory for Oxo Synthesis & Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China

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Liguo Ji

Liguo Ji

Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shannxi 710069, China

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Xiaojuan Huang

Xiaojuan Huang

State Key Laboratory for Oxo Synthesis & Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China

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Biao Wu

Corresponding Author

Biao Wu

Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shannxi 710069, China

Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shannxi 710069, ChinaSearch for more papers by this author
First published: 21 May 2013
Citations: 8

Abstract

The tris(2-aminoethyl)amine (tren)-based tris(4-pyridylurea) receptor L has been synthesized and its anion binding properties were studied. The ligand forms a 2:1 (host/guest) complex with MgSO4, [SO42−L2], in which a sulfate ion is encapsulated by six urea groups from the two ligands through multiple hydrogen bonds. The metal ions do not coordinate to the pyridyl groups but exist as the hydrate [Mg(H2O)6]2+ and interact with the [SO4L2] capsules in the outer coordination sphere to form a three dimensional extended structure. The anion binding behavior of ligand L in solution was studied.

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