S1 Supplementary Materials for Thermodynamics of reactions of ClHg• and BrHg• radicals with atmospherically abundant free radicals T. S. Dibble, M. J. Zelie, and H. Mao {Chemistry Department, State University of New York-Environmental Science and Forestry, Syracuse, NY, USA} Correspondence to: T. S. Dibble (tsdibble@esf.edu) Table of Contents: Table S1. Absolute Energies (Hartree), zero point energies (ZPE, in kJ/mol), and values of the T 1 diagnostic for all neutral species. 1 Hartree = 2625.5 kJ/mol. Table S2. Absolute Energies (Hartree), zero point energies (ZPE, in kJ/mol), and values of the T 1 diagnostic for all anionic species. 1 Hartree = 2625.5 kJ/mol. Table S3. Cartesian coordinates (Å) of all species. Table S4. Harmonic vibrational frequencies (cm -1 ) for all species and mode assignments for all species. Table S5. Inputs for thermodynamic analysis.