Supporting Information: Hydride, Chloride, and Bromide Show Similar Electronic Effects in the Au 9 (PPh 3 ) 3+ 8 Nanocluster Anthony Cirri, Hanna Morales Hern´ andez, and Christopher J. Johnson * Department of Chemistry, Stony Brook University, Stony Brook, NY 11790 E-mail: chris.johnson@stonybrook.edu Contents 1. Materials and methods 2. Characterization 3. Comparison with Au 9 (P(p-OCH 3 -Ph) 3 ) 3+ 8 4. Comparison between gas- and solution-phase Au 9 (PPh 3 ) 3+ 8 and Au 9 (PPh 3 ) 8 H 2+ 5. References S-1 Electronic Supplementary Material (ESI) for ChemComm. This journal is © The Royal Society of Chemistry 2019