Raw data for the manuscript entitled “A Porphyrin Iron(III) π-Dication Species and its Relevance in Catalyst Design for the Umpolung of Nucleophiles” is organized into folders that are named following the Figure numbers in which the data is presented in the manuscript or SI. Data associated with the SI that is not presented in a particular figure (such as data associated with synthetic procedures) are in folders according to the relevant section number. Computational data can be found a folder named "Computational Data". In the folders you will also find a scan of the relevant lab journal page or a document titled “Sample Code Explanation” in which the experimental procedure is outlined and/or an explanation of the data labels can be found.