Cp* - Migration – an Approach to Novel Group 13 Element Complexes

Abstract

The reaction of Cp*GaCl2 with Na2W2(CO)10 yield [Cp*GaW(CO)5], whereas the reactions with KCo(CO)4 lead to the ionic complexes [{Co2(CO)6(μ-CO)}2(μ4-Ga)]− and [{Co2(CO)6(μ-CO)}(μ-Ga(Cl){Co(CO)4}]. In contrast, Cp*2GaCl reacts with KCo(CO)4 to give [Co2(CO)6(μ-GaCp*)2]−. With K[(CO)2CpFe] the complex [{CpFe(CO)}2(μ-CO)(μGaCp*)] is formed. The results show, that both starting materials offer an alternative synthetic route to subvalent Ga(I) compounds via reductive dehalogenation.