Substitution of Hyp (Hyp = Si(SiMe3)3) at metalloid [Ge9(Hyp)3]− clusters using phosphine stabilized Au(i)Cl

Abstract

We present two new intermetalloid cluster compounds [(nBu₃P)AuGe₉(Hyp)₂Au(PnBu₃)]₂ (1) and [Au(iPr₂POC₆H₄OPiPr₂)AuGe₉(Hyp)₂]₂ (2) which are obtained from the reaction of KGe₉(Hyp)₃ (Hyp = Si(SiMe₃)₃) with the respective Au(I) phosphine precursors. The products are characterized via X-ray crystal structure analysis and the reaction course is analysed via NMR spectroscopy. We also show that in the resulting compound 1 the hypersilyl substituents can be reintroduced via the reaction with Hyp–Cl to obtain nBu₃PAuGe₉(Hyp)₃.