Hermaphroditism in chemical dynamics: the reaction Ba + Cl2 → BaCl + Cl |
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Authors: | Michael Menzinger David J Wren |
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Institution: | Chemistry Department, University of Toronto, Toronto, Ontario, Canada |
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Abstract: | The reaction Ba + Cl2 → BaCl + Cl proceeds through different electronic channels with diametrically opposite collision dynamics: ground state BaCl(X2Σ) is formed via a direct interaction as witnessed by forward scattering and a strongly inverted internal state distribution. Electronically excited BaCl*(C2Π) is formed via a long-lived collision complex, indicated by a statistical vibrational distribution. A simple RRK argument explains the differences of lifetimes towards unimolecular decomposition of the collision complexes. A lower limit of the BaCl(X2Σ+) dissociation energy is placed at 121 kcal/mole. |
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