The reactions of Ar′GaGaAr′ (Ar′ = C6H3-2,6-(C6H3-2,6-iPr2)2) with alkenes revealed the addition of two olefins per Ar′GaGaAr′ under ambient conditions for ethylene, propene, 1-hexene and styrene but no reactions with more hindered or cyclic olefins.