Xuan X, Wang J, Lu J, Pei N, Mo Y
School of Chemical and Environmental Sciences, Henan Normal University, Xinxiang, People's Republic of China.
Spectrochim Acta A Mol Biomol Spectrosc. 2001 Jul;57(8):1555-60. doi: 10.1016/s1386-1425(00)00486-8.
Solvation interaction and ion association in solutions of lithium perchlorate/sulfolane have been studied by using infrared and Raman spectra as a function of concentration of lithium perchlorate. The band changes of antisymmetric OSO stretch, antisymmetric CSC stretch, -SO2 wag and twist suggest that there is an interaction between Li+ and sulfolane molecules, and the site of solvation is the oxygen atom of -SO2 group. The molecular orbital calculation supports this suggestion. On the other hand, the apparent solvation number was calculated, and the band fitting for the ClO4- band reveals the presence of contact ion pair, solvent separated ion pair and free ClO4- anion in the concentrated solutions.
通过使用红外光谱和拉曼光谱研究了高氯酸锂/环丁砜溶液中的溶剂化相互作用和离子缔合，该研究是作为高氯酸锂浓度的函数进行的。反对称OSO伸缩、反对称CSC伸缩、-SO₂摇摆和扭转的谱带变化表明Li⁺与环丁砜分子之间存在相互作用，溶剂化位点是-SO₂基团的氧原子。分子轨道计算支持了这一观点。另一方面，计算了表观溶剂化数，并且对ClO₄⁻谱带的谱带拟合揭示了在浓溶液中存在接触离子对、溶剂分隔离子对和游离ClO₄⁻阴离子。
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