1752
J. Phys. Chem. 1980, 84, 1752
(4) W. H. Miller, J. Chem. Phys., 85, 2216 (1976). (5) 8. C. Garrett and D. G. Truhlar, J. Phys. Chem., preceding paper In this issue. (6) Some of this work, as well as part of the work reported here, is reviewed in D. G. Truhlar, J. Phys. Chem., 83, 188 (1979). (7) 8. C. Garrett and D. G. Truhlar, J. Am. Chem. Soc., 101, 4534, 5207 (1979). (8) B. C. Garrett and D. G. Truhlar, J. Am. Chem. Soc., in press. (9) B. C. Garrett and D. G. Truhlar, J. Chem. Phys., in press. (10) M. Baer, J . Chem. Phys., 80, 1057 (1974); H.EssBn, G. D. Billing, and M. Baer, Chem. Phys., 17, 443 (1976). (11) D. G. Truhlar, J. A. Merrick, and J. W. Duff, J. Am. Chem. Soc., 98, 6771 (1976); J. C. Gray, D. G. Truhlar, and M. Baer, J . Phys. Chem., 83, 1045 (1979). (12) W. Jakubetz, J. Am. Chem. SOC., 101, 298 (1979). (13) Purely classical transition-state theory has been applied to H i- CI,
in ref 3 and in E. Pollak, M. S. Chlkl, and P. Pechukas, to be published. (14)
P.J. Kuntz, E. M. Nemeth, J. C. Polanyl, S. D. Rosner, and C. E. Young,
J. Chern. Phys., 44, 1168 (1966). ( 15) K. G. Anlauf, P. J. Kuntz, D. H.Maybtte, P. D. Pacey, and J. C. Polanyi, Discuss. Faraday Soc., 44, 183 (1967). (16) 8. C. Garrett and D. 0. Truhlar, J. Phys. Chem., 83, 2921 (1979). (17) 8. C. Garrett and D. 0. Truhlar, J. Phys. Chem., 83, 1915 (1979). (18) R. T. Watson, J. Phys. Chem. Ref. Data, 6, 871 (1977). ( 19) The experimental Anhenius activation energy for the 250-750 K range is 1.2 kcal mol-' (ref 18) whereas the ICVT/MCPSAG calculations for the present surface yield 3.1 kcal mol-'. Thus, although this well-studied surface is a realistic one for model studies, it apparently has too high a barrier. The classical barrier height for this surface is 2.42 kcal mol-' and the vibrationally adiabatic barrier heights for the collinear and three-dimensional reactions are 2.37 and 2.48 kcal mol-', respectively.
ADDITIONS AND CORRECTIONS 1977, Volume 81
N. W. Gregory: The Ultraviolet-Visible Absorption Spectrum of Vapors Generated in the Iron-Bromine System. Molecular Complexes and Vaporization Thermodynamics. Page 1858. The temperatures designated in the caption and on Figure 1were incorrectly labeled K. The values shown correspond to temperatures in "C.
1979, Volume 83 Eiichi Kumamoto* and Nobuo Yoshida: Relationship of Self-Diffusion Coefficients to Membrane Potential and Salt Flux Across an Ion-Exchange Membrane.
Page 2171. Right-hand column, line 7 below eq 12: 10-lo2 should read 5-50. Also, line 14 below eq 12: 10 should read 20. The conclusion that the ratios DCI*/DBa* are larger than those reported previously is still valid. Page 2172. The correct Del* values may be read by dividing the reported values in Figure 2 by a factor of 2. The calculated membrane potentials and salt fluxes in Figures 3 and 4 are not affected by this correction. In Figure 3, the values of the abscissa, a+d,should be multiplied by a factor of 22/3.
