Data within is to support the manuscript titled "Ruthenium-Rhenium and Ruthenium-Palladium Supramolecular Photocatalysts for Photoelectrocatalytic CO2 and H+ Reduction"

Included are current density traces obtained from the compounds used in this study, optical spectroscopy raw data (steady-state and transient absorption/transient infrared), results from isotopic labelling GC-MS experiments, tabulated gas chromatography results for photocatalytic experiments and characterization of photocatalysts before and after exposure to photocatalytic conditions determined by x-ray photoelectron spectroscopy (XPS). Please refer to separate notes for XPS data, which is necessarily in a proprietary data format, but can be interrogated with freely available software such as CasaXPS (free demo version at http://www.casaxps.com/).

For transient absorption and transient infrared raw data raw data is in ASCII format in Excel files with file names denoting whether the sample was on a thin film of NiO onr in acetonitrile solution MeCN. We recommend either using the freely available Surface Explorer software (available from Ultrafast Systems https://ultrafast.systems/products/spectrometers-accessories/surface-xplorer/) or the freely available "OPTIMUS" software packages for data processing (https://optimusfit.org/).

All other data is in text format and required no special software to access.