Figure 6.

Microcanonical rate constants for the dissociation of the proton-bound n-acetyl-L-alanine methyl ester calculated by RRKM theory for four different transition-state frequency sets using an E_o of 1.2 eV and A^∞ = 10^17.5 s⁻¹. Frequency sets I and II (overlapping, solid line), III (dashed line), and IV (dotted line) are described in Table 3. Plotted on the same energy scale is a Boltzmann distribution at the middle of the experimental temperature range for dissociation.