Raman spectroscopic study on NpO $_{2}$ $^{+}$ -Ca $^{2+}$ interaction in highly concentrated calcium chloride

Fujii, Toshiyuki*; Uehara, Akihiro*; Kitatsuji, Yoshihiro ; Yamana, Hajimu*

Coordination circumstance of neptunyl ion in concentrated CaCl $_{2}$ solutions was analyzed by Raman spectrometry. Besides the symmetric stretch ( $_{1}$ ) mode of NpO $_{2}$ $^{+}$ and NpO $_{2}$ $^{2+}$ , the asymmetric stretch ( $_{3}$ ) mode of NpO $_{2}$ $^{+}$ was found. The Raman intensity of the $_{3}$ mode increased with the concentration of CaCl $_{2}$ in the system. This would be attributable to the cation-cation interaction between Np(V) and Ca(II).

Language	:	English
Journal	:	Journal of Radioanalytical and Nuclear Chemistry
Volume	:	301
Number	:	1
Pages	:	p.293 - 296
Publication Year/Month	:	2014/07
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Paper URL	:	https://doi.org/10.1007/s10967-014-3130-1
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Keywords	:	no keyword
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Registration No. : AA20140005
JAEA Abstracts No. : 43000051
Paper Submission No. : 15183

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Raman spectroscopic study on NpO-Ca interaction in highly concentrated calcium chloride

Raman spectroscopic study on NpO $_{2}$ $^{+}$ -Ca $^{2+}$ interaction in highly concentrated calcium chloride