中文摘要：

测量了在降温过程中体积比为1∶1的二甲基亚砜（DMSO）水溶液的拉曼光谱,并对DMSO水溶液的拉曼光谱进行了归属。对实验数据进行分析发现：在降温过程中DMSO分子与水分子的分子间氢键、DMSO分子与DMSO分子和水分子与水分子间氢键的作用行为引起了DMSO的S-O双键和水分子的O—H键的拉曼谱带的变化。进一步分析表明：在27～-30℃降温过程DMSO与水之间氢键加强,-30～-60℃降温过程水与水之间氢键代替DMSO与水之间的氢键。这为丰富水溶液的氢键理论提供了实验依据。

英文摘要：

In the present paper,DMSO/H2O mixture with the ratio of volume 1∶1 was measured in the cooling process by Raman spectroscopy,and the Raman assignments was made to the DMSO molecular and water molecular.The results showed that the behavior between intra-molecular hydrogen bonds and inter-molecular hydrogen bonds of DMSO and water leads to the change in the Raman spec traofthe S-O stretchingvibrationofDMSOandtheO—H stretching vibration of water.Further analysis showed that the hydrogen bond between DMSO and water was enhanced in the course of temperature decreasing process（27to-30℃）,and the intramolecular hydrogen bonds between water and water replaced the intermolecular hydrogen bonds of DMSO and water in the course of temperature decreasing process（-30to-60 ℃）.The research provides experimental basis for hydrogen bonding theory in aqueous solution.