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- Title
THE COMPLEX FORMATION OF SUBSTITUTED DIAZACROWN ETHERS WITH ALKALI AND ALKALINE EARTH CATIONS IN AQUEOUS SOLUTION.
- Authors
Buschmann, Hans-Jürgen; Schollmeyer, Eckhard
- Abstract
The complex formation between different disubstituted diazacrown ethers and alkali and alkaline earth cations has been studied using different experimental techniques. Due to the low solubility of these ligands calorimetric and Potentiometrie titration are not suitable for the determination of the complex stabilities. However in the presence of salts the solubility of the ligands increases. These data enable the calculation of the stability constants. The unsubstituted ligand l,10-diaza-18-crown-6 forms no detectable complexes with alkali ions but with alkaline earth cations in aqueous solution. All substituted diazacrown ethers form complexes with both alkali and alkaline earth cations. The chemical structure of the side arms has no influence upon the complex stabilities. Thus in aqueous solution no cation-p interactions can be detected.
- Publication
Main Group Metal Chemistry, 2002, Vol 25, Issue 9, p529
- ISSN
0792-1241
- Publication type
Article