Mode-specific energy absorption by solvent molecules during CO2 vibrational cooling

Phys Chem Chem Phys. 2007 Apr 14;9(14):1688-92. doi: 10.1039/b618452a. Epub 2007 Feb 23.

Abstract

Non-equilibrium molecular dynamics (NEMD) simulations of energy transfer from vibrationally excited CO(2) to CCl(4) and CH(2)Cl(2) solvent molecules are performed to identify the efficiency of different energy pathways into the solvent bath. Studying in detail the work performed by the vibrationally excited solute on the different solvent degrees of freedom, it is shown that vibration-to-vibration (V-V) processes are strongly dominant and controlled by those accepting modes which are close in frequency to the CO(2) bend and symmetric stretch vibration.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon Dioxide / chemistry*
  • Carbon Tetrachloride / chemistry*
  • Energy Transfer
  • Methylene Chloride / chemistry*
  • Models, Chemical*
  • Solvents / chemistry
  • Time Factors
  • Vibration

Substances

  • Solvents
  • Carbon Dioxide
  • Methylene Chloride
  • Carbon Tetrachloride