首页> 外文期刊>Studia Universitatis Babes-Bolyai. Series Physica >INFRARED SPECTROSCOPY OF SMALL WATER CLUSTERS
【24h】

INFRARED SPECTROSCOPY OF SMALL WATER CLUSTERS

机译:小水团的红外光谱

获取原文
获取原文并翻译 | 示例
           

摘要

We report calculated infrared spectra for water clusters composedof up to twenty molecules, using a formalism based on second order perturbationtheory. We have investigated the frequency domain between 3000 and 4000 cm~(-1),which includes the two stretching modes and the first overtone of the anglebending mode. The stretching modes are found to be red shifted, while the bendingmode is blue shifted. For both modes the line shifts increase with the cluster sizeand appear to be strongly correlated with the average number of hydrogen bondsper cluster. The spectral lines corresponding to the stretching of free OH bonds(not participating in hydrogen bonds) have been found to be almost independenton the cluster sizes. For larger clusters the spectra tend to form broad bands whichcan be identified in the experimental spectra of bulk water.
机译:我们使用基于二阶微扰理论的形式主义报告了由多达二十个分子组成的水簇的计算红外光谱。我们研究了3000至4000 cm〜(-1)之间的频域,其中包括两个拉伸模式和角度弯曲模式的第一个泛音。发现拉伸模式是红移的,而弯曲模式是蓝移的。对于这两种模式,线位移都随簇的大小而增加,并且似乎与每个簇的氢键平均数密切相关。已经发现对应于游离OH键(不参与氢键)的伸展的谱线几乎与簇大小无关。对于较大的簇,光谱倾向于形成宽带,可以在大体积水的实验光谱中识别出宽带。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号