Thermal rate constant for addition of chlorine atoms to ethylene. [Thermalized /sup 38/Cl atoms from neutron-irradiated CClF/sub 3/]
The relative reaction rate constant for removal of chlorine (Cl) atoms by addition to ethylene (C/sub 2/H/sub 4/) in the gas phase at 4000-torr pressure has been measured at 298 K by a competitive radiochemical technique to be 2.9 +- 0.1 times faster than the abstraction of H from ethane (C/sub 2/H/sub 6/) by Cl. This removal rate corresponds to an apparent reaction rate constant of (16.6 +- 1.8) x 10/sup -11/ cm/sup 3/ molecule/sup -1/s/sup -1/, based on the measured value for reaction with C/sub 2/H/sub 6/. Correction for back-reaction of C/sub 2/H/sub 4/Cl* at 4000 torr leads to an estimated absolute reaction rate constant of (19 +- 2) x 10/sup -11/ cm/sup 3/ molecule/sup -1/s/sup -1/ for k/sub 1/, Cl + C/sub 2/H/sub 4/ ..-->.. C/sub 2/H/sub 4/ ..-->.. C/sub 2/H/sub 4/Cl* (1). The relative rates of abstraction by Cl of H from hydriodic acid (HI) and phosphine (PH/sub 3/) are 2.21 +- 0.10 and 4.13 +- 0.13 times faster than abstraction from C/sub 2/H/sub 6/.
- Research Organization:
- Univ. of California, Irvine
- DOE Contract Number:
- AT03-76ER70126
- OSTI ID:
- 5433658
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 87:20; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400701* -- Radiochemistry & Nuclear Chemistry-- Hot-Atom Chemistry
640304 -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKANES
ALKENES
ATMOSPHERIC CHEMISTRY
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BROMINATED ALIPHATIC HYDROCARBONS
CHEMICAL REACTION KINETICS
CHEMISTRY
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINE 38
CHLORINE ISOTOPES
COLLISIONS
COMPARATIVE EVALUATIONS
DATA
DISPERSIONS
ETHANE
ETHYLENE
EXPERIMENTAL DATA
FLUORINATED ALIPHATIC HYDROCARBONS
HADRON REACTIONS
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
HOT ATOM CHEMISTRY
HYDRIODIC ACID
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
IODINE COMPOUNDS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KINETICS
LIGHT NUCLEI
MEDIUM PRESSURE
MEDIUM TEMPERATURE
MINUTES LIVING RADIOISOTOPES
MIXTURES
MOLECULE COLLISIONS
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUMERICAL DATA
ODD-ODD NUCLEI
ORGANIC BROMINE COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOSPHINES
PHOSPHORUS COMPOUNDS
PRESSURE DEPENDENCE
RADIOCHEMISTRY
RADIOISOTOPES
REACTION KINETICS
SECONDS LIVING RADIOISOTOPES
TEMPERATURE DEPENDENCE