The hexagonally crystallizing compounds MgFe6Ge6 and LiCo6Ge6 were prepared and structurally characterized by single crystal investigations. The lattice constants are a = 506.7 pm, c = 804.5 pm, c/a= 1.58s for MgFe6Ge6 and a = 504.8 pm, c = 772.9 pm, c/a = 1.531 for LiCo6Ge6. The structures (space group P6/mmm) are closely related to the structure of LiFe6Ge6 and the B 35-type structure of FeGe.