State-specific rates of H2CO(S)→H2+CO at energies near the top of barrier: A violation of RRKM theory?
- 1 February 1985
- journal article
- letter
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 82 (3) , 1606-1607
- https://doi.org/10.1063/1.448436
Abstract
Unimolecular dissociation rates have been determined for two rovibrational eigenstates in the H2CO X̃ 1A1 electronic ground state. The two levels investigated are separated in energy by ∼30 cm−1 at a total energy near 28 300 cm−1, which is near the top of the barrier for dissociation to H2+CO. The angular momentum is J=2 for both levels, and they have the same vibration‐rotation symmetry. Contrary to the expectations from conventional RRKM theory, the state higher in energy has a dissociation rate ∼2.5 times slower than the less energetic state.Keywords
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