作者:T. C. Swinney、D. F. Kelley
DOI:10.1021/j100159a058
日期:1991.3
The effect of deuteration on the spectroscopy and proton-transfer dynamics of 10 K matrix-isolated alpha- and beta-naphthol.(NH3)n (n = 0, 1, 2, 3) complexes has been studied. Large changes in the cis:trans rotamer ratio of beta-naphthol are observed upon deuteration. These observations can be explained in terms of the energetics and relaxation dynamics of both forms. The deuteron-transfer times in the alpha-naphthol (-OD).(ND3)3 and beta-naphthol(-OD).(ND3)3 complexes were determined to be longer than several nanoseconds. Comparison with the corresponding proton-transfer rates indicates a kinetic isotope effect of greater-than-or-equal-to 200. These results can be understood in terms of a simple two-dimensional tunneling model.