Eu(Ⅲ) complexes involving 1,3,5-triazine diphosphine oxides
来源期刊：JOURNAL OF RARE EARTHS2009年第4期
论文作者：M.Jesie J.Karpiuk O.Pietraszkiewicz M.Pietraszkiewicz
Key words：Eu(Ⅲ) complexes; 1,3,5-triazine; diphosphine oxide; spectroscopy; rare earths;
Abstract: The 1,3,5-triazine diphosphine oxide ligands with donor-acceptor properties formed strong complexes with europium(Ⅲ) ion in acetonitrile.Spectrophotometric titrations and mass spectra indicated that two ligands coordinated to one europium ion.The stability constants varied from 11.64 to 14.60 (log β).Binary complexes exhibited rather weak luminescence in solution.1,3,5-triazine diphosphine oxides engaged as co-ligands in Eu(Ⅲ) (2-thenoyltrifluoroacetonate)3 complex contributed to the overall photoluminescence and allowed for excitation with longer wavelengths than the parent complex.
M.Jesie1，J.Karpiuk2，O.Pietraszkiewicz2，M.Pietraszkiewicz2
(1.n)(Institute of Physical Chemistry of the Polish Academy of Sciences,Kasprzaka 44/52,01 224 Warsaw,Poland;
2.Institute of Physical Chemistry of the Polish Academy of Sciences,Kasprzaka 44/52,01 224 Warsaw,Poland)
Abstract:The 1,3,5-triazine diphosphine oxide ligands with donor-acceptor properties formed strong complexes with europium(Ⅲ) ion in acetonitrile.Spectrophotometric titrations and mass spectra indicated that two ligands coordinated to one europium ion.The stability constants varied from 11.64 to 14.60 (log β).Binary complexes exhibited rather weak luminescence in solution.1,3,5-triazine diphosphine oxides engaged as co-ligands in Eu(Ⅲ) (2-thenoyltrifluoroacetonate)3 complex contributed to the overall photoluminescence and allowed for excitation with longer wavelengths than the parent complex.
Key words:Eu(Ⅲ) complexes; 1,3,5-triazine; diphosphine oxide; spectroscopy; rare earths;
【全文内容正在添加中】
