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Molecules 2007, 12(7), 1325-1333;

Chlorine Anion Encapsulation by Molecular Capsules Based on Cucurbit[5]uril and Decamethylcucurbit[5]uril

Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People’s Republic of China
Institute of Applied Chemistry, Guizhou University, Guiyang, 550025, People’s Republic of China
Author to whom correspondence should be addressed.
Received: 2 June 2007 / Revised: 3 July 2007 / Accepted: 3 July 2007 / Published: 6 June 2007
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Three barrel-shaped artificial molecular capsules 1-3, based on normal cucurbit[5]uril (Q[5]) and decamethylcucurbit[5]uril (Me10Q[5]), were synthesized and structurally characterized by single-crystal X-ray diffraction. Encapsulation of a chlorine anion in the cavity of a Q[5] or Me10Q[5] to form closed a molecular capsule with the coordinated metal ions or coordinated metal ions and water molecules in the crystal structures of these compounds is common. The three complexes [Pr2(C30H30N20O10)Cl3(H2O)13]3+3Cl-·5H2O (1), [Sr2(C40H50N20O10)(H2O)4Cl]3+3Cl-·2(HCl) 19H2O (2) and [K(C40H50N20O10)(H2O)Cl]·[Zn(H2O)2Cl2]·[ZnCl4]2-·2(H3O)+·8H2O (3) all crystallize as isolated molecular capsules. View Full-Text
Keywords: Cucurbit[5]uril;decamethylcucurbit[5]uril;crystal structure;molecular capsules. Cucurbit[5]uril;decamethylcucurbit[5]uril;crystal structure;molecular capsules.

Figure 1

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Zhang, Y.-Q.; Zhu, Q.-J.; Xue, S.-F.; Tao, Z. Chlorine Anion Encapsulation by Molecular Capsules Based on Cucurbit[5]uril and Decamethylcucurbit[5]uril. Molecules 2007, 12, 1325-1333.

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