Sm8Ru11Ga21 crystallizes in the orthorhombic C222 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 13-coordinate geometry to one Ru(5), two equivalent Ru(1), one Ga(1), one Ga(2), one Ga(3), one Ga(4), one Ga(5), one Ga(6), one Ga(9), and three equivalent Ga(7) atoms. In the second Sm site, Sm(2) is bonded in a 13-coordinate geometry to one Ru(3), one Ru(4), two equivalent Ru(2), one Ga(1), one Ga(2), one Ga(3), one Ga(4), one Ga(5), one Ga(6), and three equivalent Ga(8) atoms. There are five inequivalent Ru sites. In the first Ru site, Ru(3) is bonded in a 6-coordinate geometry to four equivalent Sm(2), two equivalent Ga(4), and four equivalent Ga(8) atoms. In the second Ru site, Ru(1) is bonded in a 8-coordinate geometry to two equivalent Sm(1), one Ga(1), one Ga(2), one Ga(4), one Ga(5), one Ga(7), and one Ga(8) atom. In the third Ru site, Ru(4) is bonded in a 6-coordinate geometry to four equivalent Sm(2), two equivalent Ga(5), and four equivalent Ga(8) atoms. In the fourth Ru site, Ru(5) is bonded in a 8-coordinate geometry to four equivalent Sm(1), two equivalent Ga(6), two equivalent Ga(9), and four equivalent Ga(7) atoms. In the fifth Ru site, Ru(2) is bonded in a 8-coordinate geometry to two equivalent Sm(2), one Ga(1), one Ga(2), one Ga(3), one Ga(6), one Ga(7), and one Ga(8) atom. There are nine inequivalent Ga sites. In the first Ga site, Ga(9) is bonded to four equivalent Sm(1), two equivalent Ru(5), two equivalent Ga(3), and four equivalent Ga(7) atoms to form distorted corner-sharing GaSm4Ga6Ru2 cuboctahedra. In the second Ga site, Ga(1) is bonded in a 4-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Ru(1), two equivalent Ru(2), and two equivalent Ga(2) atoms. In the third Ga site, Ga(2) is bonded in a 10-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Ru(1), two equivalent Ru(2), and two equivalent Ga(1) atoms. In the fourth Ga site, Ga(3) is bonded in a 11-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Ru(2), one Ga(9), two equivalent Ga(6), and two equivalent Ga(7) atoms. In the fifth Ga site, Ga(4) is bonded in a 11-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), one Ru(3), two equivalent Ru(1), two equivalent Ga(5), and two equivalent Ga(8) atoms. In the sixth Ga site, Ga(5) is bonded in a 11-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), one Ru(4), two equivalent Ru(1), two equivalent Ga(4), and two equivalent Ga(8) atoms. In the seventh Ga site, Ga(6) is bonded in a 11-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), one Ru(5), two equivalent Ru(2), two equivalent Ga(3), and two equivalent Ga(7) atoms. In the eighth Ga site, Ga(7) is bonded in a 9-coordinate geometry to three equivalent Sm(1), one Ru(1), one Ru(2), one Ru(5), one Ga(3), one Ga(6), and one Ga(9) atom. In the ninth Ga site, Ga(8) is bonded in a 9-coordinate geometry to three equivalent Sm(2), one Ru(1), one Ru(2), one Ru(3), one Ru(4), one Ga(4), and one Ga(5) atom.
Sm8Ru11Ga21 crystallizes in the orthorhombic C222 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 13-coordinate geometry to one Ru(5), two equivalent Ru(1), one Ga(1), one Ga(2), one Ga(3), one Ga(4), one Ga(5), one Ga(6), one Ga(9), and three equivalent Ga(7) atoms. The Sm(1)-Ru(5) bond length is 3.42 Å. There is one shorter (3.14 Å) and one longer (3.21 Å) Sm(1)-Ru(1) bond length. The Sm(1)-Ga(1) bond length is 3.14 Å. The Sm(1)-Ga(2) bond length is 3.17 Å. The Sm(1)-Ga(3) bond length is 3.40 Å. The Sm(1)-Ga(4) bond length is 3.19 Å. The Sm(1)-Ga(5) bond length is 3.19 Å. The Sm(1)-Ga(6) bond length is 3.36 Å. The Sm(1)-Ga(9) bond length is 3.40 Å. There are a spread of Sm(1)-Ga(7) bond distances ranging from 2.93-3.03 Å. In the second Sm site, Sm(2) is bonded in a 13-coordinate geometry to one Ru(3), one Ru(4), two equivalent Ru(2), one Ga(1), one Ga(2), one Ga(3), one Ga(4), one Ga(5), one Ga(6), and three equivalent Ga(8) atoms. The Sm(2)-Ru(3) bond length is 3.42 Å. The Sm(2)-Ru(4) bond length is 3.44 Å. There is one shorter (3.15 Å) and one longer (3.17 Å) Sm(2)-Ru(2) bond length. The Sm(2)-Ga(1) bond length is 3.14 Å. The Sm(2)-Ga(2) bond length is 3.12 Å. The Sm(2)-Ga(3) bond length is 3.09 Å. The Sm(2)-Ga(4) bond length is 3.35 Å. The Sm(2)-Ga(5) bond length is 3.36 Å. The Sm(2)-Ga(6) bond length is 3.20 Å. There are a spread of Sm(2)-Ga(8) bond distances ranging from 2.96-3.00 Å. There are five inequivalent Ru sites. In the first Ru site, Ru(3) is bonded in a 6-coordinate geometry to four equivalent Sm(2), two equivalent Ga(4), and four equivalent Ga(8) atoms. Both Ru(3)-Ga(4) bond lengths are 2.83 Å. All Ru(3)-Ga(8) bond lengths are 2.55 Å. In the second Ru site, Ru(1) is bonded in a 8-coordinate geometry to two equivalent Sm(1), one Ga(1), one Ga(2), one Ga(4), one Ga(5), one Ga(7), and one Ga(8) atom. The Ru(1)-Ga(1) bond length is 2.57 Å. The Ru(1)-Ga(2) bond length is 2.57 Å. The Ru(1)-Ga(4) bond length is 2.54 Å. The Ru(1)-Ga(5) bond length is 2.54 Å. The Ru(1)-Ga(7) bond length is 2.53 Å. The Ru(1)-Ga(8) bond length is 2.54 Å. In the third Ru site, Ru(4) is bonded in a 6-coordinate geometry to four equivalent Sm(2), two equivalent Ga(5), and four equivalent Ga(8) atoms. Both Ru(4)-Ga(5) bond lengths are 2.79 Å. All Ru(4)-Ga(8) bond lengths are 2.54 Å. In the fourth Ru site, Ru(5) is bonded in a 8-coordinate geometry to four equivalent Sm(1), two equivalent Ga(6), two equivalent Ga(9), and four equivalent Ga(7) atoms. Both Ru(5)-Ga(6) bond lengths are 2.81 Å. Both Ru(5)-Ga(9) bond lengths are 2.79 Å. All Ru(5)-Ga(7) bond lengths are 2.54 Å. In the fifth Ru site, Ru(2) is bonded in a 8-coordinate geometry to two equivalent Sm(2), one Ga(1), one Ga(2), one Ga(3), one Ga(6), one Ga(7), and one Ga(8) atom. The Ru(2)-Ga(1) bond length is 2.55 Å. The Ru(2)-Ga(2) bond length is 2.56 Å. The Ru(2)-Ga(3) bond length is 2.49 Å. The Ru(2)-Ga(6) bond length is 2.56 Å. The Ru(2)-Ga(7) bond length is 2.53 Å. The Ru(2)-Ga(8) bond length is 2.55 Å. There are nine inequivalent Ga sites. In the first Ga site, Ga(9) is bonded to four equivalent Sm(1), two equivalent Ru(5), two equivalent Ga(3), and four equivalent Ga(7) atoms to form distorted corner-sharing GaSm4Ga6Ru2 cuboctahedra. Both Ga(9)-Ga(3) bond lengths are 2.97 Å. All Ga(9)-Ga(7) bond lengths are 2.62 Å. In the second Ga site, Ga(1) is bonded in a 4-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Ru(1), two equivalent Ru(2), and two equivalent Ga(2) atoms. There is one shorter (2.78 Å) and one longer (2.81 Å) Ga(1)-Ga(2) bond length. In the third Ga site, Ga(2) is bonded in a 10-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Ru(1), two equivalent Ru(2), and two equivalent Ga(1) atoms. In the fourth Ga site, Ga(3) is bonded in a 11-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Ru(2), one Ga(9), two equivalent Ga(6), and two equivalent Ga(7) atoms. Both Ga(3)-Ga(6) bond lengths are 2.80 Å. Both Ga(3)-Ga(7) bond lengths are 2.80 Å. In the fifth Ga site, Ga(4) is bonded in a 11-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), one Ru(3), two equivalent Ru(1), two equivalent Ga(5), and two equivalent Ga(8) atoms. Both Ga(4)-Ga(5) bond lengths are 2.79 Å. Both Ga(4)-Ga(8) bond lengths are 2.70 Å. In the sixth Ga site, Ga(5) is bonded in a 11-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), one Ru(4), two equivalent Ru(1), two equivalent Ga(4), and two equivalent Ga(8) atoms. Both Ga(5)-Ga(8) bond lengths are 2.67 Å. In the seventh Ga site, Ga(6) is bonded in a 11-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), one Ru(5), two equivalent Ru(2), two equivalent Ga(3), and two equivalent Ga(7) atoms. Both Ga(6)-Ga(7) bond lengths are 2.62 Å. In the eighth Ga site, Ga(7) is bonded in a 9-coordinate geometry to three equivalent Sm(1), one Ru(1), one Ru(2), one Ru(5), one Ga(3), one Ga(6), and one Ga(9) atom. In the ninth Ga site, Ga(8) is bonded in a 9-coordinate geometry to three equivalent Sm(2), one Ru(1), one Ru(2), one Ru(3), one Ru(4), one Ga(4), and one Ga(5) atom.