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ouyangshunli

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In this study, our vibrational spectroscopic analysis on hydrogen-bonding between DMSO and water comprises both experimental Raman spectra and ab initio calculations on structures of various DMSO/water clusters with increasing water content. The Raman peak position of the v(S=O) stretching mode of DMSO serves as a probe for monitoring the degree of hydrogen-bonding between DMSO and water. In addition, the two vibrational modes, namely, the CH3 symmetric stretching mode and the CH3 asymmetric stretching mode have been analyzed in different concentrations.  We relate the computational results to the experimental vibrational wavenumber trends that are observed in our concentration-dependent Raman study. The combination of experimental Raman data with ab initio calculation leads to a better knowledge of the nature of the hydrogen bonding and the structures of the studied hydrogen-bonded complexes.
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librashi

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ouyangshunli(金币+15, 翻译EPI+1): 2010-05-19 10:15:09
文中对二甲基亚砜(DMSO)和水之间氢键的振动光谱分析由实验部分(拉曼光谱)和 计算部分(随着水含量的增加,计算不同DMSO/水的群结构)两部分组成。DMSO的v(s=0)伸展模式的拉曼波峰位为监测DMSO和水之间氢键的自由度提供了探索。此外,本文还分析了不同浓度下的两种振动方式(即 CH3对称伸展方式和CH3非对称伸展方式)。认为计算结果和浓度依赖性拉曼实验中的振荡波数趋势有关。实验的拉曼数据和理论的计算结合使得能够更好的了解氢键的性质和研究的氢键复合物的结构。
2楼2010-05-19 08:27:09
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