Sm3Os4Ge13 crystallizes in the cubic Pm-3n space group. Sm(1) is bonded in a 16-coordinate geometry to four equivalent Os(1) and twelve equivalent Ge(2) atoms. Os(1) is bonded in a 9-coordinate geometry to three equivalent Sm(1) and six equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 2-coordinate geometry to three equivalent Sm(1), two equivalent Os(1), and one Ge(1) atom. In the second Ge site, Ge(1) is bonded in a cuboctahedral geometry to twelve equivalent Ge(2) atoms.
Sm3Os4Ge13 crystallizes in the cubic Pm-3n space group. Sm(1) is bonded in a 16-coordinate geometry to four equivalent Os(1) and twelve equivalent Ge(2) atoms. All Sm(1)-Os(1) bond lengths are 3.23 Å. There are eight shorter (3.22 Å) and four longer (3.27 Å) Sm(1)-Ge(2) bond lengths. Os(1) is bonded in a 9-coordinate geometry to three equivalent Sm(1) and six equivalent Ge(2) atoms. All Os(1)-Ge(2) bond lengths are 2.51 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 2-coordinate geometry to three equivalent Sm(1), two equivalent Os(1), and one Ge(1) atom. The Ge(2)-Ge(1) bond length is 3.04 Å. In the second Ge site, Ge(1) is bonded in a cuboctahedral geometry to twelve equivalent Ge(2) atoms.