Subvalente Galliumtriflate – mögliche Ausgangsverbindungen für Clusterverbindungen des Galliums

Subvalent Gallium Triflates – Potentially Useful Starting Materials for Gallium Cluster Compounds By reaction of GaCp* with trifluormethanesulfonic acid in hexane a mixture of gallium trifluormethanesulfonates (triflates, OTf) is obtained. This mixture reacts readily with lithiumsilanides [Li(thf) 3 Si(SiMe 3 ) 2 R] (R = Me, SiMe 3 ) to afford the cluster compounds [Ga 6 {Si(SiMe 3 )Me} 6 ], [Ga 2 {Si(SiMe 3 ) 3 } 4 ] and [Ga 10 {Si(SiMe 3 ) 3 } 6 ]. By crystallization from various solvents the gallium triflates [Ga(OTf) 3 (thf) 3 ], [HGa(OTf)(thf) 4 ] + [Ga(OTf) 4 (thf) 3 ] − , [Cp*GaGa(OTf) 2 ] 2 and [Ga(toluene) 2 ] + [Ga 5 (OTf) 6 (Cp*) 2 ] − were isolated and characterized by single crystal X ray structure analysis.