12422 The Journal of Physical Chemistry, Vol. 97, No. 47, 1993 (5) Brack, T. L.;Delaney, J. K.; Atkinson, G. H.; Albeck, A.; Sheves, M.; Ottolenghi, M.Biophys. J. 1993, 65, 964. (6) Crouch, R. K. Photochem. Photobiol. 1986, 44, 803. (7) Ottolenghi, M.; Shevw, M. J . Membr. Biol. 1989, 112, 193. (8) Birge, R. R. Biochem. Biophys. Acta 1990, 1016, 293. (9) Albeck, A.; Friedman, N.; Sheves, M.; Ottolenghi, M. J . Am. Chem. Sot. 1986, 108, 614. (10) Sheves, M.; Friedman, N.; Albeck, A.; Ottolenghi, M. Biochemistry 1985, 24, 1260. (1 1) Fang, J.; Carriker, J.; Balogh-Nair, V.;Nakanishi, K. J . Am. Chem. Soc. 1983, 105, 5162. (12) Polland, H.-J.; Franz, M. A.; Zinth, W.; Kaiser, W.; Kolling, E.; Oesterhelt, D. Biochem. Biophys. Acta 1984, 767, 635. (13) Braiman, M.; Mathies, R. P m . Natl. Acad. Sci. U.S.A. 1982, 79, 403. (14) Brack, T. L.;Atkinson, G. H. J. Mol. Struct. 1989, 214, 289. (1 5) Atkinson, G. H.: Brack, T. L.;Grieger, I.; Rumbles, G.; Blanchard,
Additions and Corrections D.; Siemankowski, L. SPIE 1986, 630, 82. (16) Atkinson, G. H.; Brack, T. L.;Blanchard, D.; Rumbles, G. Chem. Phys. 1989, 131, 1. (17) Clemens, J. M.; Najbar, J.; Bronstein-Bronte, I.; Hochstrasser, R. M. Opt. Commun. 1983.47, 271. (18) Kakitani, H.; Kakitani, T.; Rodman, H.; Honig, B.; Callender, R. J . Phys. Chem. 1983, 87, 3620. (19) It should be noted that at higher spectral resolution than that used for the data shown in Figure 4, an asymmetric broadening of the C 4 stretching band to lower frequency displacements can be observed. In analogy to the native BR photocycle,2° this lower-frequency broadening may be assignable to RR scattering from vibrationallyexcited BR6.11. The presence of this broadening, however, does not alter the interpretation presented here. (20) Brack, T. L.; Atkinson, G. H. J . Phys. Chem. 1991, 95, 2351. (21) Smith, S.0.; Braiman, M. S.;Myers, A. B.; Pardoen, J. A.; Courtin, J. M. L.; Winkel, C.; Lugtenburg, J.; Mathies, R. A. J. Am. Chem. Sot. 1987, 109, 3108.
ADDITIONS AND CORRECTIONS 1993, Volume 97 Chia-Fu Nien, B. Rajasekhar, and John M. C. Plane': Unusual Kinetic Behavior of the Reactions Mg 0 2 M and Ca 02 M (M = N2, He) over Extended Temperature Ranges
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Page 6455. Two typographical errors occurred in the labeling of subscripts in the middle paragraph. This should read as follows: It is necessary at this point to establish that the experimental measurements of kl(T) are close to the rate coefficient at the low-pressure limit, krec,o. We therefore followed our previous p r o c e d ~ r e ,based ~ ~ * ~on the work of Luther and Troee30 The calculation requires an estimate of the high-pressure rate constant, k,,,,. In this case, we set where the preexponential collision frequency is calculated in terms of the orbiting criteria on the attractive surface due to the longrange dispersion force between Mg and 02.9b
