Synthesis of rare earth complexes using minor actinides separation reagent TPEN and derivatives

Murayama, Tatsuya*; Watanabe, Masayuki   ; Aoyagi, Noboru   ; Fujisawa, Kiyoshi*

In this study, we synthesized Eu(III) complex using N,N,N',N'-tetrakis(2-pyridylmethyl)-ethylenediamine (TPEN) and TPEN derivatives, N,N,N',N'-tetrakis(2-pyridylmethyl)-propylenediamine(MeTPEN) which has methyl group into the ethylenediamine framework, the structure and physical properties of these complexes investigated. The crystal structure of Eu(TPEN) and Eu(MeTPEN), the geometry of these structures indicate pseudo-bicapped square antiprism (10 coordination) with two bidentate NO; ions. As the result of investigation of fluorescence spectrum and lifetime in organic solution, the fluorescence of Eu (MeTPEN) was enhanced more intensity than that of Eu(TPEN) by addition of OAc; ion.