“…The chemistry of 2 , in particular, is undergoing a recent renaissance, being a key reagent in a number of recent publications [12] . These recent reports include the activation of small molecules (CO, C 2 H 4 ), [12c,j] reduction chemistry (including that of benzene), [12b,e,i,k,m] cycloadditions [12a,d,g] and various bond activations including C−H and C−F [12c,f,h,l,n] . The vast majority of the reactions of 1 and 2 are best described as oxidative additions, although some evidence of nucleophilic behaviour has been reported (especially with electropositive metals/Lewis acids) and this has been exploited in the formation of Al‐metal donor/acceptor bonds [11] .…”