The reaction of CCl[sub 3] radicals and Cl atoms with hydrogen molecules
- Department of Chemistry, Columbia University, New York, New York 10027 (United States)
- RIKEN (The Institute of Physical and Chemical Research), Wako, Saitama, 351-01 (Japan)
- Department of Chemistry, Ben Gurion University, Beersheba (Israel)
A small amount of H atoms are observed as products of the reaction of Cl atoms generated by photodissociating Cl[sub 2] at 351 nm in the presence of H[sub 2]. A much larger H atom concentration is detected when a mixture of H[sub 2] and CCl[sub 4] is photodissociated at 193 nm with an average kinetic energy of 6.5[plus minus]0.5 kcal/mol. The reactant is shown to be the vibrationally hot CCl[sub 3] radical. In the reaction of CCl[sub 3] and Cl atoms with HD the atomic H/D product ratios are 1.47[plus minus]0.16 and 0.59[plus minus]0.11, respectively. The former result is in accord with the theory of Johnson [ital et] [ital al]. [J. Chem. Phys. [bold 94], 2749 (1991)] that for kinematic reasons the D end of the HD molecule is more reactive unless the HD molecule is strongly rotating. The F and Cl atoms which give H/D ratios less than 1 when reacting with HD are special cases for which higher [ital J] states of HD are still reactive.
- OSTI ID:
- 6605954
- Journal Information:
- Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 102:8; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ACTIVATION ENERGY
ALKYL RADICALS
ANGULAR MOMENTUM
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
CARBON COMPOUNDS
CARBON TETRACHLORIDE
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINE
CHLORINE COMPOUNDS
COLLISIONS
DEUTERIDES
DEUTERIUM COMPOUNDS
ELEMENTS
ENERGY
ENERGY LEVELS
ENTHALPY
EXCITED STATES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN DEUTERIDE
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NONMETALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
RADICALS
THERMODYNAMIC PROPERTIES
VIBRATIONAL STATES
YIELDS