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本文综述了最近十年来利用振动光谱研究液相水微观局域结构的进展.我们系统比较了红外光谱,拉曼光谱和其他谱学技术对水微观局域结构的敏感程度.从实验和理论两方面重点总结了水的红外光谱,拉曼光谱的各种光谱谱峰分解方法及其归属,以及一些非谱峰分解处理方式的特点及相应的对水微观结构的认识.到目前为止,所达到的一个基本共识是,水的局域结构主要是非对称的四氢键结构,具有少量的无氢键或者弱氢键的氧氢共价键(OH键).另外,水的光谱中最明显的谱学特征总是和自由OH存在形式相关.
This review summarizes the recent progress in the use of vibrational spectroscopy to study the microscopic local structure of liquid water.We systematically compared the sensitivity of infrared spectroscopy, Raman spectroscopy and other spectroscopic techniques to water microscopic local structure.From the experimental and theoretical two In the aspects, the methods of water spectrum analysis, the methods of spectral peak decomposition of Raman spectroscopy and their attribution, as well as the characteristics of some non-spectral peak decomposition methods and the corresponding understanding of water microstructure have been summarized. Up to now, Is that the local structure of water is mainly an asymmetric tetra-hydrogen bond structure with a small amount of oxygen-hydrogen covalent bonds (OH bonds) without hydrogen bonds or weak hydrogen bonds. In addition, the most obvious The spectral features are always related to the existence of free OH.