or between IsA and IA (-9.8 kcal mol -1 ), where the binding free energy between two IA (-5.8 kcal mol -1 ) is significantly smaller at 298.15 K. In the "iodine oxide" nucleation path, we see that the outgrowing clusters at low temperatures are primarily the "oxyacid-assisted" clusters, mainly IP with either oxyacid (∼ 12-54%),