Dynamics of endoergic substitution reactions. II. Br+/C/sub 2/H/sub 2/Cl/sub 2//. -->. Cl+/C/sub 2/H/sub 2/ClBr/

Journal Article · Tue Nov 15 00:00:00 EST 1988 · J. Chem. Phys.; (United States)

OSTI ID:6870409

Robinson, G N; Continetti, R E; Lee, Y T

We have extended the crossed beams studies described in the preceding paper to the reactions of Br atoms with 1,1- and trans-dichloroethylene. The shapes of the product translational energy distributions and excitation functions for both reactions support our previous conclusion that Cl elimination from Br--R--Cl collision complexes can compete with Br elimination only in the limit that few vibrational modes of the complex are active in energy redistribution. The substitution cross section for the Br+CH/sub 2/CCl/sub 2/ reaction is considerably lower than that for the Br+trans-CHClCHCl reaction in the collision energy range 15--25 kcal/mol, suggesting that steric effects play a dominant role in determining the relative magnitudes of the cross sections.

• Research Organization: Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory and Department of Chemistry, University of California, Berkeley, California 94720
• OSTI ID: 6870409
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 89:10; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
640304 -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
BEAMS
BROMINE
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
CROSS SECTIONS
ELEMENTS
EXCITATION FUNCTIONS
FUNCTIONS
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENS
KINETICS
MOLECULAR BEAMS
NONMETALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
RADICALS
REACTION KINETICS