The zip file contains txt files with absorbance vs. time data; exp files used for the k(obs) determination; pdf files with results of the k(obs) determination. Folder and file names CGxxx refer to individual experiments and are identical to those in the Supporting Information (docx/rtf/pdf). This Supplemental Material is part of an article published in the Journal of Physical Organic Chemistry (doi.org/10.1002/poc.70061).