Thermal Decomposition of 4,4-Dimethylpentene−1 in a Single-Pulse Shock Tube

4,4-Dimethylpentene−1 has been pyrolyzed in a single-pulse shock tube. The initial process is apparently the breaking of the allylic carbon—carbon bond. The rate expressions for the reaction C4H9−C3H5→ lim kt−C4H9·+C3H5·has been found to be k=1015.8 exp(−65 500/RT) sec−1.Assuming no activation energy for the recombination process this leads to a value of 12 kcal for the allylic resonance energy.