| Autor: |
Petr Táborský, Ivona Svobodová, Zbigniew Hnatejko, Pemysl Lubal, Stefan Lis, Michaela Försterová, Petr Hermann, Ivan Lukeš, Josef Havel |
| Zdroj: |
Journal of Fluorescence; Jul2005, Vol. 15 Issue 4, p507-512, 6p |
| Abstrakt: |
Abstract The luminescence lifetimes of europium(III) complexes with new monophosphorus acid derivatives of H4dota were measured by means of time-resolved laser-induced luminescence spectroscopy in H2O and D2O. The hydration numbers of these complexes were estimated using different empirical equations [Horrocks and Sudnick (1979) J. Am. Chem. Soc. 101 (1979) 334; Choppin and Barthelemy(1989) Inorg. Chem. 28, 3354–3357; Choppin and Bünzli Lanthanide probes in life, chemical and earth sciences. Theory and practice (1989); Kimura and Kato J. Alloys Comp. 275–277 (1998) 806; Parker (1999) J. Chem. Soc., Perkin Trans. 2, 493–503; Supkowski and Horroks (2002) Inorg. Chim. Acta. 340, 44–48]. It was shown that all the relationships gave similar results with a satisfactory precision. The hydration numbers of complexes of H3do3a and H4dota agreed with the literature values. One water molecule is coordinated in complexes of the new ligands. The results showed that the Choppin formula based on measurements only in H2O can be satisfactorily used for estimation of the hydration numbers. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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