首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Intramolecular vibrational energy redistribution in aromatic molecules of type C_6H_5X (X = H, D, F, Cl, CH_3, CF _3)
【24h】

Intramolecular vibrational energy redistribution in aromatic molecules of type C_6H_5X (X = H, D, F, Cl, CH_3, CF _3)

机译:分子内振动能在C_6H_5X型芳香族分子中的重新分布(X = H,D,F,Cl,CH_3,CF _3)

获取原文
获取原文并翻译 | 示例
           

摘要

Femtosecond IR pump UV probe spectroscopy was employed in the gas phase to study intramolecular vibrational energy redistribution (IVR) in benzene and five monosubstituted derivatives thereof. After selective excitation of the first overtone of the ring CH-stretch vibration, all molecules showed the same two-step redistribution dynamics characteristic for nonstatistical IVR. The nature of the substituent influences mainly the second, slower IVR component. The presence of an internal rotor does not alter the redistribution rate or pathway compared to that of a monatomic substituent of equal mass. Coupling order model calculations reflect the experimental trends well if the polyatomic substituents are regarded as decoupled from the intra-ring dynamics and modeled as point masses.
机译:飞秒红外泵浦紫外探针光谱用于气相研究苯及其五种单取代衍生物中的分子内振动能重新分布(IVR)。在选择性激发环CH拉伸振动的第一个泛音之后,所有分子对于非统计IVR都显示出相同的两步重新分布动力学特征。取代基的性质主要影响第二个较慢的IVR组分。与等质量的单原子取代基相比,内部转子的存在不会改变重分布速率或途径。如果将多原子取代基与环内动力学解耦并建模为点质量,则耦合阶数模型的计算可以很好地反映实验趋势。

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