This compound exhibited 2 coexistent crystallographic structures, which were ordered and disordered variants of the ThSi2 structure. The former structure resulted from the ordering of Ge vacancies.

B.Lambert-Andron, J.Pierre, B.Chenevier, R.Madar, N.Boutarek, J.Rodriguez-Carvajal: Journal of Physics - Condensed Matter, 1994, 6[42], 8725-32