Characterization of redox sensitive plutonium(III) complexed with alkylated 2,6-ditriazinylpyridine (BTP) in organic solution.
Characterization of redox sensitive plutonium(III) complexed with alkylated 2,6-ditriazinylpyridine (BTP) in organic solution.
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DOI：
10.1039/b927016g
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发表时间：
2010-05
影响因子：
4
通讯作者：
N. Banik;B. Schimmelpfennig;C. Marquardt;B. Brendebach;A. Geist;M. Denecke
中科院分区：
文献类型：
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作者：
N. Banik;B. Schimmelpfennig;C. Marquardt;B. Brendebach;A. Geist;M. Denecke
应用光谱、溶剂萃取方法和计算化学对有机溶液中与 N 供体萃取剂烷基化 2,6-二三嗪基吡啶 (n-C3H7-BTP) 络合的氧化还原敏感三价钚进行表征。讨论了 Pu(III) 的氧化还原稳定性和形态。将使用 n-C3H7-BTP 萃取 Pu(III) 与氧化还原稳定的 Am(III) 萃取进行比较。采用紫外-可见/近红外和XAFS光谱研究了有机溶液中Pu(III)与n-C3H7-BTP的形态形成。仅观察到形成 1:3 复合物 [Pu(n-C3H7-BTP)3](3+)，这通过 EXAFS 和溶剂萃取得到证实。将 [Pu(n-C3H7-BTP)3](3+) 配合物与之前研究的同构 U(III)、Am(III) 和 Cm(III) 配合物进行比较。
Spectroscopic, solvent extraction methods and computational chemistry are applied for the characterization of redox sensitive trivalent plutonium complexed with the N-donor extracting agent alkylated 2,6-ditriazinylpyridines (n-C3H7-BTP) in organic solution. The redox stabilization and speciation of Pu(III) is discussed. Extraction of Pu(III) with n-C3H7-BTP is compared to that for redox stable Am(III). The speciation of Pu(III) with n-C3H7-BTP in organic solution is studied by UV-Vis/NIR and XAFS spectroscopy. Only the 1:3 complex, [Pu(n-C3H7-BTP)3](3+) is observed to form, which is confirmed by EXAFS and solvent extraction. The [Pu(n-C3H7-BTP)3](3+) complex is compared to the isostructural U(III), Am(III), and Cm(III) complexes studied earlier.