“…[ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ] Due to their increased Lewis acidity, B III cations, usually classified as boronium, borenium or borinium ions in dependence of their coordination number (four, three or two, respectively), [12] are especially attractive for a variety of applications. [ 13 , 14 , 15 , 16 , 17 ] However, their high Lewis acidity could lead to undesired side reactions, for example restricted functional group tolerance and vulnerability to moisture, that limit their use. Intense studies in the last decades even succeeded in the isolation of some B III dications.…”