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1 vote
1 answer
219 views

Understanding transition state theory

Let's say we have standard chemical reaction given by $$A-B + C \leftrightharpoons [A\cdot\cdot B\cdot\cdot C]^{\dagger} \rightarrow A +B-C$$ I want to estimate the pre-exponential factor of this ...
megamence's user avatar
  • 219
4 votes
2 answers
387 views

Why only molecules with three or more atoms undergo unimolecular reaction?

Only molecules with three or more atoms undergo unimolecular reactions. A diatomic molecule cannot dissociate in this way because it has a single mode of vibrational freedom. If this mode is excited ...
user8277998's user avatar
2 votes
0 answers
106 views

rate constant via flux-flux correlation function for linear potential energy surface

How does one calculate fully quantum mechanical rate ($\kappa$) in the golden-rule approximation for two linear potential energy surfaces? Attempt: Miller (83) proposes $\kappa=\int{Tr[\exp{(-\beta\...
t.jun's user avatar
  • 21