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1H NMR spectra (recorded in CD2Cl2) of [Au11(PPh3)8Cl2]Cl (A) and Au11(PPh3)7Cl3 (B) under ligand exchange reaction conditions that examine the relative thermal stability of the two forms. The lower spectra, obtained after keeping the undecagold starting materials in CHCl3 solutions at elevated temperature for the time required for ligand exchange, show that [Au11(PPh3)8Cl2]Cl is more stable at elevated temperature.
