Raman Spectroscopic Study of Concentrated Aqueous LiBr Solutions.
Raman Spectroscopic Study of Concentrated Aqueous LiBr Solutions.
复制标题
浓溴化锂水溶液的拉曼光谱研究。
DOI：
10.1246/bcsj.67.929
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发表时间：
1994
影响因子：
4
通讯作者：
O. Uemura
中科院分区：
文献类型：
--
作者：
Y. Kameda;H. Ebata;O. Uemura
测量了浓水溶液(LiBr)x(H2O)1−x和(LiBrx(D2O)1−x，x=0.0 5~0.2 5)的拉曼光谱。在30~10 0 0 cm−1范围内，H2O溶液各向同性光谱中位于16 0~190 cm−1处的偏振峰强度随LiBr含量的增加而逐渐增大。当溴化锂浓度低于15mol%时，该峰在低频侧和高频侧都有几个肩峰。高浓度水溶液的各向同性光谱在340 cm−1处有另一组分，在D2O溶液中也有2 0 cm−1的低频移。当用6Li(95.5%6Li)取代NaLi(92.5%7Li)时，在25mol%LiBr溶液中的340 cm−-1峰也向高频方向移动了约13 cm−-1，而190 cm−-1峰的位置保持不变。因此，……
The Raman spectra for concentrated aqueous LiBr solutions (LiBr)x(H2O)1−x and (LiBr)x(D2O)1−x, x = 0.05—0.25, were measured in the frequency range of 30—1000 cm−1. A polarized peak intensity centered at 160—190 cm−1 in the isotropic spectrum for H2O solutions exhibits a systematic increase with increasing LiBr content. At LiBr concentrations below 15 mol%, this peak contains several shoulders at both the lower and higher frequency sides. The corresponding peak in the isotropic spectrum for D2O solutions is shifted to the lower frequency by ca. 10 cm−1. The isotropic spectra for highly concentrated H2O solutions, such as 20 and 25 mol% LiBr, have another component at 340 cm−1, which is also shifted to the lower frequency by ca. 20 cm−1 in D2O solutions. This 340 cm−1 peak in a 25 mol% LiBr solution is also shifted to the higher frequency by ca. 13 cm−1 when isotopically substituting 6Li (95.5% 6Li) for natLi (92.5% 7Li), while the position of 190 cm−1 peak remains unchanged when substituting. Consequently,...