Cucurbit[6]uril as ligand for the complexation of diamines, diazacrown ethers and cryptands in aqueous formic acid

被引：11

作者：

Buschmann, HJ

Mutihac, L

Jansen, K

Schollmeyer, E

机构：

[1] Deutsch Text Forschungszentrum Nord W eV, D-47798 Krefeld, Germany

[2] Univ Bucharest, Dept Analyt Chem, Bucharest 703461, Romania

来源：

JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY | 2005年 / 53卷 / 3-4期

关键词：

cucurbit[6]uril; diamine; diazacrown ethers; cryptands; complex formation; calorimetric titration;

D O I：

10.1007/s10847-005-2023-x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The complex formation between cucurbit[6]uril and different diamines, diazacrown ethers, and cryptands has been studied in aqueous formic acid solution. The complex stabilities and the thermodynamic values for the complex formation of diamines are reduced if any further donor atom (e.g., sulfur, oxygen, or nitrogen) is present in the molecules. The inclusion of this polar group inside the cavity of cucurbit[6]uril has a negative effect upon the complex formation. Diazacrown ethers and cryptands do not form inclusive complexes. One nitrogen donor atom interacts with the carbonyl groups at one of the portals.

引用

页码：281 / 284

页数：4