Kinematic considerations imply that the steric hindrance due to a "bulky" group can be directly probed using rotationally excited reactants. At typical collision and angular velocities, a shadow due to the bulky group restricts entry into the cone of acceptance for rotationally excited reactants. The conclusion is discussed for the realistic case where the anisotropy of the long range potential can reorient the incoming trajectories. Exact and approximate (reactant jz conserving) classical trajectory computations for the O+HCl and O+DCl reactions, on two different potential energy surfaces are used as an illustration.
|Number of pages||8|
|Journal||Chemical Physics Letters|
|State||Published - 22 Jun 1990|
Bibliographical noteFunding Information:
The research at Bar-Ilan University was supported by the Fund for Basic Research administered by the Israel Academy of Sciences and Humanities. The Fritz Haber Research Center is supported by the Mi- nerva Gesellschaft Rir die Forschung, mbH, Munich, FRG.