computationally for calculated transition states, we require the calculated normal mode wavenumbers as applied to the Bigeleisen-Meyer equations. These equations are given in the supporting information for the original article, 9 but the code used to evaluate these equations is neither noted nor provided there and the normal mode wavenumbers used as input to the code are also not included. Here we use the Kinisot program, which was based on a much earlier implementation of these equations. The KIEs are computed with the first term of the Bell tunnelling correction and a frequency scaling factor of 0.9806 for the 6-31+G(d,p) basis set. 9