NMR AND IR SPECTROMETRY STUDIES OF MONOAMIDE COMPLEXES WITH PLUTONIUM(IV) AND LANTHANIDE(III) NITRATES.
NMR AND IR SPECTROMETRY STUDIES OF MONOAMIDE COMPLEXES WITH PLUTONIUM(IV) AND LANTHANIDE(III) NITRATES.
复制标题
单酰胺与钚 (IV) 和镧系元素 (III) 硝酸盐配合物的核磁共振和红外光谱研究。
DOI：
10.1080/07366299508918303
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
C. Chachaty
中科院分区：
文献类型：
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作者：
C. Berthon;C. Chachaty
单酰胺（E）萃取剂是核燃料后处理中磷酸三丁酯（TBP）的潜在替代物。在本研究中，我们主要使用NMR（13 C和1H）光谱来确定调节单酰胺萃取剂的选择性和效率的结构参数的种类。通过红外光谱法获得与金属离子和单酰胺的羰基部分键合的硝酸酯基团的信息。DEHBA=C3H7CON（CH2CH（C2H5）C4H9）2，DEHiBA=（CH3）2CHCON（CH2CH（C2H5）C4H9）2和DEHDMBA=（CH3）3CCH2CON（CH2CH（C2H5）C4H9）2镧系元素（III）硝酸盐（E）和单酰胺（E）之间的络合产生化学计量E：Ln = 2：1和3：1。形成3：1络合物的能力取决于羰基部分上的空间位阻、金属离子半径以及金属离子的第一配位层中硝酸根离子的存在。Pu（NO_3）_4和Th（NO_3）_4的单酰胺配合物也具有同样的性质。
ABSTRACT Monoamide (E) extractants are potential candidates to replace the tri-n-butyl phosphate (TBP) used in the reprocessing of nuclear fuels. In the present study, we essentially used NMR (13C and 1H) spectroscopy to identify the kinds of structural parameters conditioning the selectivity and efficiency of monoamide extractants. Information on nitrate groups bonded to the metallic ions and to the carbonyl moiety of monoamides was obtained by IR spectroscopy. The symmetric monoamides used in this study were : DEHBA=C3H7CON(CH2CH(C2H5)C4H9)2, DEHiBA=(CH3)2CHCON(CH2CH(C2Hs)C4H9)2and DEHDMBA=(CH3)3CCH2CON(CH2CH(C2Hs)C4H9)2 Complexation between lanthanide(III) nitrates (E) and monoamides (E) yields the stoichiometrics E:Ln = 2:1 and 3:1. The ability to form 3:1 complexes depends on the steric hindrance on the carbonyl moiety, the metal ionic radius, and the presence of nitrate ions in the first coordination sphere of the metal ion. The same feature is observed for monoamide complexes of Pu(NO3)4 and Th(NO3...