Eu(Ⅲ) complexes involving 1,3,5-triazine diphosphine oxides  

作　　者：O.Pietraszkiewicz M.Pietraszkiewicz J.Karpiuk M.Jesień 

机构地区：[1]Institute of Physical Chemistry of the Polish Academy of Sciences

出　　处：《Journal of Rare Earths》2009年第4期584-587,共4页稀土学报（英文版）

基　　金：support from the Polish Ministry of Science and Higher Education (3T09A 081 28)

摘　　要：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 13）. 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.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 13）. 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.

关 键 词：Eu（Ⅲ） complexes 1 3 5-TRIAZINE diphosphine oxide SPECTROSCOPY rare earths 

分 类 号：O627.3[理学—有机化学]