SmGe5 crystallizes in the orthorhombic Immm space group. Sm(1) is bonded in a 10-coordinate geometry to two equivalent Ge(2) and twelve equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to three equivalent Sm(1), two equivalent Ge(2), and three equivalent Ge(1) atoms. In the second Ge site, Ge(2) is bonded in a 10-coordinate geometry to two equivalent Sm(1) and eight equivalent Ge(1) atoms.
SmGe5 crystallizes in the orthorhombic Immm space group. Sm(1) is bonded in a 10-coordinate geometry to two equivalent Ge(2) and twelve equivalent Ge(1) atoms. Both Sm(1)-Ge(2) bond lengths are 3.10 Å. There are eight shorter (3.19 Å) and four longer (3.53 Å) Sm(1)-Ge(1) bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to three equivalent Sm(1), two equivalent Ge(2), and three equivalent Ge(1) atoms. Both Ge(1)-Ge(2) bond lengths are 2.93 Å. There is one shorter (2.58 Å) and two longer (2.62 Å) Ge(1)-Ge(1) bond lengths. In the second Ge site, Ge(2) is bonded in a 10-coordinate geometry to two equivalent Sm(1) and eight equivalent Ge(1) atoms.