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The Complexation of protonated Amines, Diaza-18-crown-6 and Cryptand (222) by 18-Crown-6 in Different Solvents

Buschmann H., Mutihac L., Wego A., Schollmeyer E.

Polish Journal of Chemistry

2000

Vol. 74, nr 1

61-66

The formation of complexes between protonated amines and macrocyclic ligands is known. However, the diprotonated ligands diaza-18-crown-6 and cryptand (222) themselves are able to act as guest molecules. As a recult they form complexes with 18-crown-6. The complex formation has been studied by calorimetric titrations and H NMR measurements. The reaction between diprotonated diazacrown ethers or cryptands with crown ethers can be used for the self-assembly of larger aggregates.