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マイナーアクチノイド分離試薬TPENとその誘導体を用いた希土類錯体の合成

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

村山 達哉*; 渡邉 雅之   ; 青柳 登   ; 藤澤 清史*

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

本研究では、N,N,N',N'-tetrakis(2-pyridylmethyl)-ethylenediamine (TPEN)並びにエチレンジアミン骨格にメチル基を導入したN,N,N',N'-tetrakis(2-pyridylmethyl)-propylenediamine(MeTPEN)を配位子として用いてユウロピウム(III)錯体を合成し、構造、物性を比較した。単結晶X線構造解析から、Eu(TPEN)、Eu(MeTPEN)錯体はどちらも硝酸イオンが2個配位した10配位の二冠正方ねじれプリズム構造を持つことが分かった。有機溶液中の蛍光スペクトルや蛍光寿命などを詳細に調べた結果、Eu(MeTPEN)錯体はEu(TPEN)錯体に比べ、酢酸イオンの添加により、強い蛍光を示すことを明らかにした。

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$$_{3}$$$$^{-}$$; 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.

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