1H NMR and spectrophotometric study of alkaline metal ion complexes with N-dansyl aza-18-crown-6.

Autor:	Tadeusz Ossowski, Hanna Sulowska1, Tomasz Karbowiak, Dorota Zarzeczanska, Błażej Gierczyk, Grzegorz Schroeder
Zdroj:	Central European Journal of Chemistry; Mar2006, Vol. 4 Issue 1, p13-28, 16p
Abstrakt:	Formation of complexes of A18C6-Dns and metal cations (Ca2+, Sr2+, Ba2+ and Mg2+) in acetonitrile has been studied by NMR, absorption and fluorescence spectroscopy and PM5 semi-empirical methods. A18C6-Dns forms stable complexes with Ca2+, Sr2+ and Ba2+ cations. The stability constants of various complexes are determined by different methods and their structures are visualised by the PM5 semi-empirical calculations. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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