Dibromoindium(<scp>iii</scp>) cations as a π-Lewis acid: characterization of [IPr·InBr<sub>2</sub>][SbF<sub>6</sub>] and its catalytic activity towards alkynes and alkenes
[IPr[middle dot]InBr2][SbF6] (2) (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) has been synthesized, characterized in the solid state, and used as catalyst.
Ga‐neration X: Well‐defined neutral and cationicgallium(III) halidecomplexes have been synthesized and evaluated in catalysis. Both the (NHC)GaX3/AgSbF6 catalytic mixture and isolated (NHC)GaX2+ species function as exquisite π‐Lewis acids in typical GaX3‐catalyzed reactions (see scheme). The cationiccomplexes are more active than GaX3 and yet more resistant to hydrolysis, which allows lower catalytic