CNEO-TST, which does not use any scaling, exhibits roughly the same level of overestimation (about a factor of 2 to 3) as observed in the protium-atom-transfer reaction, presumably with reasons analogous to the hydrogen-atom-transfer case. As with the pro- tium case, we again observe similarities in transition structure geometries between CNEO-TST and conventional CVT/SCT (Figure ), although at temperatures at and below room temperature, CNEO-TST has better agreement than CVT/SCT with the experimental rate constants.