Relaxation of vibrationally excited HF in levels v=1 and v=2. II. By CH4, C2H6, C3H8, C2H2, and C2H4

The rate constants for the vibrational deactivation of HF(v = 1,2) by CH4, C2H6, C3H8, and C2H2 were measured by monitoring the decay of HF† rotation-vibration emission in a fast flow system. For these hydrocarbons the energy transfer processes are very efficient. In the case of C2H4 the rate constant could only be estimated.