%0 Journal Article %1 Gilles:2000p2261 %A Gilles, MK %A Talukdar, RK %A Ravishankara, A. R %D 2000 %J Journal of Physical Chemistry A %K Cf3I, Ch3I, Depletion, Energy, Hoi, Kinetics, O(P-3) Oh, Ozone Potentials, Products, %N 39 %P 8945--8950 %R 10.1021/jp001827i %T Rate coefficients for the OH+CF3I reaction between 271 and 370 K %U http://pubs.acs.org/doi/abs/10.1021/jp001827i %V 104 %X The rate coefficient, k(1), for the reaction OH + CF3I --> products was measured under pseudo-first-order conditions in hydroxyl radical, OH. OH temporal profiles were monitored by laser-induced fluorescence (LIF), and CF3I concentrations were determined by UV/Visible absorption. We determined k(1) (T) to be (2.10 +/- 0.80) x 10(-11) exp-(2000 +/- 140)/T cm(3) molecule(-1) s(-1), over the temperature range 271 to 370 K. The quoted uncertainties are 2 sigma (95% confidence limits, sigma(A) = A sigma(lnA)) Previous measurements of k(1)(T) are compared with our values, and possible reasons for the discrepancies are discussed. The heat of formation of HOI is deduced to be less than -16 kcal mole(-1), if the products of reaction 1 are mostly HOI and CF3. These measurements support the earlier conclusion that the reaction of OH with CSI plays a negligibly small role in the atmospheric removal of CF3I.

@article{Gilles:2000p2261, abstract = {The rate coefficient, k(1), for the reaction OH + CF3I --> products was measured under pseudo-first-order conditions in hydroxyl radical, OH. OH temporal profiles were monitored by laser-induced fluorescence (LIF), and CF3I concentrations were determined by UV/Visible absorption. We determined k(1) (T) to be (2.10 +/- 0.80) x 10(-11) exp[-(2000 +/- 140)/T] cm(3) molecule(-1) s(-1), over the temperature range 271 to 370 K. The quoted uncertainties are 2 sigma (95% confidence limits, sigma(A) = A sigma(lnA)) Previous measurements of k(1)(T) are compared with our values, and possible reasons for the discrepancies are discussed. The heat of formation of HOI is deduced to be less than -16 kcal mole(-1), if the products of reaction 1 are mostly HOI and CF3. These measurements support the earlier conclusion that the reaction of OH with CSI plays a negligibly small role in the atmospheric removal of CF3I.}, added-at = {2010-06-22T19:38:37.000+0200}, affiliation = {NOAA, ERL, Aeron Lab, Boulder, CO 80305 USA}, author = {Gilles, MK and Talukdar, RK and Ravishankara, A. R}, biburl = {https://www.bibsonomy.org/bibtex/20c3e8d143e8125fb1198b0c9f14a53ed/gsmith}, date-added = {2010-03-23 14:40:45 -0400}, date-modified = {2010-04-29 13:23:09 -0400}, doi = {10.1021/jp001827i}, interhash = {b9cbe7d7cc28a01d618426d313a88016}, intrahash = {0c3e8d143e8125fb1198b0c9f14a53ed}, journal = {Journal of Physical Chemistry A}, keywords = {Cf3I, Ch3I, Depletion, Energy, Hoi, Kinetics, O(P-3) Oh, Ozone Potentials, Products,}, language = {English}, local-url = {file://localhost/Users/geoffreysmith/Documents/Papers/Journal%20of%20Physical%20Chemistry%20A/2000/Journal%20of%20Physical%20Chemistry%20A,%20104,%208945-8950%202000.pdf}, month = Jan, number = 39, pages = {8945--8950}, pmid = {000089711000014}, rating = {0}, timestamp = {2010-06-22T19:38:48.000+0200}, title = {Rate coefficients for the OH+CF3I reaction between 271 and 370 K}, uri = {papers://E88B624E-D406-46FF-9D95-BB9C1AAE3FDC/Paper/p2261}, url = {http://pubs.acs.org/doi/abs/10.1021/jp001827i}, volume = 104, year = 2000 }