Table of Contents
Laser Chemistry
Volume 5, Issue 3, Pages 157-165

Photochemistry in Van Der Waals Complexes: (Hg—H2)* → HgH + H

Laboratoire de Photophysique Moleculaire, Batiment 213, Université Paris-Sud, Orsay 91405, France

Received 23 August 1984

Copyright © 1985 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The Hg—H2 collision complex in the reaction Hg 3P1 + H2 has been investigated by a new method involving the Van der Waals complex of the reactants. This method yields the first observation of a vibrational transition in a reactive collision complex. Furthermore the fixed geometry of the Van der Waals complex corresponding to the Hg 3P1 state enables the separation of two different reaction paths depending on the electronic configuration of the complex, namely Σ3 and Π3.