Sm3(Pd10Ge3)2 crystallizes in the cubic Fm-3m space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to four equivalent Pd(1) and twelve equivalent Pd(2) atoms to form distorted SmPd16 tetrahedra that share edges with six equivalent Sm(1)Pd16 tetrahedra, edges with twelve equivalent Pd(1)SmGe3Pd6 tetrahedra, faces with four equivalent Sm(2)Pd12 cuboctahedra, and faces with four equivalent Pd(1)SmGe3Pd6 tetrahedra. In the second Sm site, Sm(2) is bonded to twelve equivalent Pd(2) atoms to form distorted SmPd12 cuboctahedra that share edges with twenty-four equivalent Pd(1)SmGe3Pd6 tetrahedra and faces with eight equivalent Sm(1)Pd16 tetrahedra. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded to one Sm(1), six equivalent Pd(2), and three equivalent Ge(1) atoms to form PdSmGe3Pd6 tetrahedra that share corners with three equivalent Pd(1)SmGe3Pd6 tetrahedra, edges with three equivalent Sm(2)Pd12 cuboctahedra, edges with three equivalent Sm(1)Pd16 tetrahedra, edges with three equivalent Pd(1)SmGe3Pd6 tetrahedra,  a faceface with one Sm(1)Pd16 tetrahedra, and faces with six equivalent Pd(1)SmGe3Pd6 tetrahedra. In the second Pd site, Pd(2) is bonded in a 14-coordinate geometry to one Sm(2), two equivalent Sm(1), four equivalent Pd(1), five equivalent Pd(2), and two equivalent Ge(1) atoms. Ge(1) is bonded in a 8-coordinate geometry to four equivalent Pd(1) and four equivalent Pd(2) atoms.
Sm3(Pd10Ge3)2 crystallizes in the cubic Fm-3m space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to four equivalent Pd(1) and twelve equivalent Pd(2) atoms to form distorted SmPd16 tetrahedra that share edges with six equivalent Sm(1)Pd16 tetrahedra, edges with twelve equivalent Pd(1)SmGe3Pd6 tetrahedra, faces with four equivalent Sm(2)Pd12 cuboctahedra, and faces with four equivalent Pd(1)SmGe3Pd6 tetrahedra. All Sm(1)-Pd(1) bond lengths are 2.87 Å. All Sm(1)-Pd(2) bond lengths are 3.39 Å. In the second Sm site, Sm(2) is bonded to twelve equivalent Pd(2) atoms to form distorted SmPd12 cuboctahedra that share edges with twenty-four equivalent Pd(1)SmGe3Pd6 tetrahedra and faces with eight equivalent Sm(1)Pd16 tetrahedra. All Sm(2)-Pd(2) bond lengths are 3.07 Å. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded to one Sm(1), six equivalent Pd(2), and three equivalent Ge(1) atoms to form PdSmGe3Pd6 tetrahedra that share corners with three equivalent Pd(1)SmGe3Pd6 tetrahedra, edges with three equivalent Sm(2)Pd12 cuboctahedra, edges with three equivalent Sm(1)Pd16 tetrahedra, edges with three equivalent Pd(1)SmGe3Pd6 tetrahedra,  a faceface with one Sm(1)Pd16 tetrahedra, and faces with six equivalent Pd(1)SmGe3Pd6 tetrahedra. All Pd(1)-Pd(2) bond lengths are 3.07 Å. All Pd(1)-Ge(1) bond lengths are 2.52 Å. In the second Pd site, Pd(2) is bonded in a 14-coordinate geometry to one Sm(2), two equivalent Sm(1), four equivalent Pd(1), five equivalent Pd(2), and two equivalent Ge(1) atoms. There is one shorter (2.67 Å) and four longer (3.07 Å) Pd(2)-Pd(2) bond lengths. Both Pd(2)-Ge(1) bond lengths are 2.46 Å. Ge(1) is bonded in a 8-coordinate geometry to four equivalent Pd(1) and four equivalent Pd(2) atoms.