Halogermanides and methods for the preparation thereof

A trichlorogermanide of formula (I): [R 4 N]/[R 4 P]Cl[GeCl 3 ] (I), where R is Me, Et, iPr, nBu, or Ph, tris(trichlorosilyl)germanide of formula (II): [R 4 N]/[R r P][Ge(SiCl 3 ) 3 ] (II), where R is Me, Et, iPr, nBu, or Ph, a tris(trichlorosilyl)germanide adduct of GaCl 3 of formula (III): [Ph 4 P][Ge(SiCl 3 ) 3 *GaCl 3 ], and a tris(trichlorosilyl)germanide adduct of BBr 3 of formula (IV): [Ph 4 P][Ge(SiCl 3 ) 3 *BBr 3 ]. Also, methods for preparing the trichlorogermanides of formula (I), the tris(trichlorosilyl)germanide of formula (II), the tris(trichlorosilyl)germanide adduct of BBr 3 of formula (IV).