PrGeSi is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Imma space group. Pr(1) is bonded to six equivalent Ge(1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing PrSi6Ge6 cuboctahedra. Ge(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1), two equivalent Ge(1), and one Si(1) atom. Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1), one Ge(1), and two equivalent Si(1) atoms.
PrGeSi is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Imma space group. Pr(1) is bonded to six equivalent Ge(1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing PrSi6Ge6 cuboctahedra. There are four shorter (3.23 Å) and two longer (3.45 Å) Pr(1)-Ge(1) bond lengths. There are four shorter (3.21 Å) and two longer (3.22 Å) Pr(1)-Si(1) bond lengths. Ge(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1), two equivalent Ge(1), and one Si(1) atom. Both Ge(1)-Ge(1) bond lengths are 2.58 Å. The Ge(1)-Si(1) bond length is 2.53 Å. Si(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1), one Ge(1), and two equivalent Si(1) atoms. Both Si(1)-Si(1) bond lengths are 2.38 Å.