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溶剂阻碍的分子内振动再分配。

Solvent-hindered intramolecular vibrational redistribution.

机构信息

Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA.

出版信息

Phys Chem Chem Phys. 2011 Apr 7;13(13):5579-83. doi: 10.1039/c0cp02138e. Epub 2011 Feb 28.

DOI:10.1039/c0cp02138e
PMID:21359345
Abstract

Ultrafast two-dimensional infrared spectroscopy and molecular dynamics simulations of Mn(2)(CO)(10) in a series of linear alcohols reveal that the rate of intramolecular vibrational redistribution among the terminal carbonyl stretches is dictated by the average number of hydrogen bonds formed between the solute and solvent. The presence of hydrogen bonds was found to hinder vibrational redistribution between eigenstates, while leaving the overall T(1) relaxation rate unchanged.

摘要

超快二维红外光谱和一系列线性醇中 Mn(2)(CO)(10) 的分子动力学模拟表明,末端羰基伸缩振动之间的分子内振动再分配速率取决于溶质和溶剂之间形成的氢键的平均数量。结果发现氢键的存在阻碍了本征态之间的振动再分配,而对整体 T(1)弛豫速率没有影响。

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