Vol. 22, No. 5
from the American Chemical Society and the American Institute of Physics
Evaluated Kinetic and Photochemical Data for Atmospheric Chemistry,
Halogen Species: Supplement VIII. IUPAC Subcommittee on Gas Kinetic
Data Evaluation for Atmospheric Chemistry, by R. Atkinson, D. L.
Baulch, R. A. Cox, R. F. Hampson Jr., J. A. Kerr (Chairman), M. J. Rossi,
and J. Troe. USD 55.00. Published in the Journal of Physical and
Chemical Reference Data, Vol. 29, No. 2, pp. 167266,
2000, by the American Chemical Society (1155 Sixteenth Street, N.W.,
Washington, DC 20036-9976) and the American Institute of Physics (Suite
1NO1, 2 Huntington Quadrangle, Melville, NY 11747-4502) for the National
Institute of Standards and Technology [S0047-2689(00)00302-0].
This paper updates and extends part of the previous database of critical
evaluations of the kinetics and photochemistry of gas-phase chemical
reactions of neutral species involved in atmospheric chemistry [J.
Phys. Chem. Ref. Data 9, 295 (1980); 11, 327 (1982); 13, 1259 (1984);
18, 881 (1989); 21, 1125 (1992); 26, 521 (1997); 26, 1329 (1997); 28,
The present evaluation is limited to the inorganic halogen family of
atmospherically important reactions. The work has been carried out by
the authors under the auspices of the IUPAC Subcommittee on Gas Phase
Kinetic Data Evaluation for Atmospheric Chemistry. Data sheets have
been prepared for 102 thermal and photochemical reactions, containing
summaries of the available experimental data with notes giving details
of the experimental procedures. For each thermal reaction, a preferred
value of the rate coefficient at 298 K is given, together with a temperature
dependence where possible. The selection of the preferred value is discussed,
and esti-mates of the accuracies of the rate coefficients and temperature
coefficients have been made for each reaction.
For each photochemical reaction, the data sheets list the preferred
values of the photoabsorption cross sections and the quantum yields
of the photochemical reactions, together with comments on how they were
The data sheets are intended to provide the basic physical chemical
data needed as input for calculations that model atmospheric chemistry.
A table summarizing the preferred rate data is provided, together with
an appendix listing the available values of enthalpies of formation
of the reactant and product species.
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