GdSm3 is Magnesium-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to two equivalent Sm(2); two equivalent Sm(4); four equivalent Sm(1); and four Sm(3,3) atoms to form GdSm12 cuboctahedra that share corners with four equivalent Sm(4)Sm8Gd4 cuboctahedra; corners with six equivalent Gd(1)Sm12 cuboctahedra; corners with eight Sm(3,3)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(4)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(2)Sm8Gd4 cuboctahedra; edges with four Sm(3,3)Sm8Gd4 cuboctahedra; edges with eight Sm(1,1)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four equivalent Sm(1)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with six equivalent Gd(2)Sm12 cuboctahedra. In the second Gd site, Gd(2) is bonded to two equivalent Sm(2); two equivalent Sm(4); four Sm(1,1); and four Sm(3,3) atoms to form GdSm12 cuboctahedra that share corners with four equivalent Sm(2)Sm8Gd4 cuboctahedra; corners with six equivalent Gd(2)Sm12 cuboctahedra; corners with eight Sm(1,1)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(2)Sm8Gd4 cuboctahedra; edges with four Sm(1,1)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(4)Sm8Gd4 cuboctahedra; edges with eight Sm(3,3)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four Sm(1,1)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with six equivalent Gd(1)Sm12 cuboctahedra. There are six inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to two equivalent Gd(1), two equivalent Gd(2), two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(3), and two equivalent Sm(4) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(2)Sm12 cuboctahedra; corners with four equivalent Sm(2)Sm8Gd4 cuboctahedra; corners with ten Sm(1,1)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(2)Sm12 cuboctahedra; edges with two equivalent Sm(1)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(2)Sm8Gd4 cuboctahedra; edges with four equivalent Gd(1)Sm12 cuboctahedra; edges with four equivalent Sm(3)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four equivalent Sm(1)Sm8Gd4 cuboctahedra; and faces with eight Sm(3,3)Sm8Gd4 cuboctahedra. In the second Sm site, Sm(2) is bonded to two equivalent Gd(1); two equivalent Gd(2); four Sm(1,1); and four Sm(3,3) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(2)Sm12 cuboctahedra; corners with six equivalent Sm(2)Sm8Gd4 cuboctahedra; corners with eight Sm(1,1)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(2)Sm12 cuboctahedra; edges with four equivalent Gd(1)Sm12 cuboctahedra; edges with four Sm(1,1)Sm8Gd4 cuboctahedra; edges with eight Sm(3,3)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with four Sm(1,1)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with six equivalent Sm(4)Sm8Gd4 cuboctahedra. In the third Sm site, Sm(3) is bonded to two equivalent Gd(1), two equivalent Gd(2), two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(3), and two equivalent Sm(4) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(1)Sm12 cuboctahedra; corners with four equivalent Sm(4)Sm8Gd4 cuboctahedra; corners with ten Sm(3,3)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(1)Sm12 cuboctahedra; edges with two equivalent Sm(3)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(4)Sm8Gd4 cuboctahedra; edges with four equivalent Gd(2)Sm12 cuboctahedra; edges with four equivalent Sm(1)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with eight Sm(1,1)Sm8Gd4 cuboctahedra. In the fourth Sm site, Sm(4) is bonded to two equivalent Gd(1); two equivalent Gd(2); four Sm(1,1); and four Sm(3,3) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(1)Sm12 cuboctahedra; corners with six equivalent Sm(4)Sm8Gd4 cuboctahedra; corners with eight Sm(3,3)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(1)Sm12 cuboctahedra; edges with four equivalent Gd(2)Sm12 cuboctahedra; edges with four Sm(3,3)Sm8Gd4 cuboctahedra; edges with eight Sm(1,1)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four Sm(1,1)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with six equivalent Sm(2)Sm8Gd4 cuboctahedra. In the fifth Sm site, Sm(3) is bonded to two equivalent Gd(1), two equivalent Gd(2), two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(3), and two equivalent Sm(4) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(1)Sm12 cuboctahedra; corners with four equivalent Sm(4)Sm8Gd4 cuboctahedra; corners with ten Sm(3,3)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(1)Sm12 cuboctahedra; edges with two equivalent Sm(3)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(4)Sm8Gd4 cuboctahedra; edges with four equivalent Gd(2)Sm12 cuboctahedra; edges with four equivalent Sm(1)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with eight equivalent Sm(1)Sm8Gd4 cuboctahedra. In the sixth Sm site, Sm(1) is bonded to two equivalent Gd(1), two equivalent Gd(2), two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(3), and two equivalent Sm(4) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(2)Sm12 cuboctahedra; corners with four equivalent Sm(2)Sm8Gd4 cuboctahedra; corners with ten Sm(1,1)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(2)Sm12 cuboctahedra; edges with two equivalent Sm(1)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(2)Sm8Gd4 cuboctahedra; edges with four equivalent Gd(1)Sm12 cuboctahedra; edges with four equivalent Sm(3)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four Sm(1,1)Sm8Gd4 cuboctahedra; and faces with eight Sm(3,3)Sm8Gd4 cuboctahedra.
GdSm3 is Magnesium-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to two equivalent Sm(2); two equivalent Sm(4); four equivalent Sm(1); and four Sm(3,3) atoms to form GdSm12 cuboctahedra that share corners with four equivalent Sm(4)Sm8Gd4 cuboctahedra; corners with six equivalent Gd(1)Sm12 cuboctahedra; corners with eight Sm(3,3)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(4)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(2)Sm8Gd4 cuboctahedra; edges with four Sm(3,3)Sm8Gd4 cuboctahedra; edges with eight Sm(1,1)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four equivalent Sm(1)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with six equivalent Gd(2)Sm12 cuboctahedra. Both Gd(1)-Sm(2) bond lengths are 3.63 Å. Both Gd(1)-Sm(4) bond lengths are 3.68 Å. All Gd(1)-Sm(1) bond lengths are 3.62 Å. There are two shorter (3.67 Å) and two longer (3.68 Å) Gd(1)-Sm(3,3) bond lengths. In the second Gd site, Gd(2) is bonded to two equivalent Sm(2); two equivalent Sm(4); four Sm(1,1); and four Sm(3,3) atoms to form GdSm12 cuboctahedra that share corners with four equivalent Sm(2)Sm8Gd4 cuboctahedra; corners with six equivalent Gd(2)Sm12 cuboctahedra; corners with eight Sm(1,1)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(2)Sm8Gd4 cuboctahedra; edges with four Sm(1,1)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(4)Sm8Gd4 cuboctahedra; edges with eight Sm(3,3)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four Sm(1,1)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with six equivalent Gd(1)Sm12 cuboctahedra. Both Gd(2)-Sm(2) bond lengths are 3.68 Å. Both Gd(2)-Sm(4) bond lengths are 3.61 Å. All Gd(2)-Sm(1,1) bond lengths are 3.67 Å. All Gd(2)-Sm(3,3) bond lengths are 3.61 Å. There are six inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to two equivalent Gd(1), two equivalent Gd(2), two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(3), and two equivalent Sm(4) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(2)Sm12 cuboctahedra; corners with four equivalent Sm(2)Sm8Gd4 cuboctahedra; corners with ten Sm(1,1)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(2)Sm12 cuboctahedra; edges with two equivalent Sm(1)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(2)Sm8Gd4 cuboctahedra; edges with four equivalent Gd(1)Sm12 cuboctahedra; edges with four equivalent Sm(3)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four equivalent Sm(1)Sm8Gd4 cuboctahedra; and faces with eight Sm(3,3)Sm8Gd4 cuboctahedra. Both Sm(1)-Sm(1) bond lengths are 3.68 Å. Both Sm(1)-Sm(2) bond lengths are 3.67 Å. Both Sm(1)-Sm(3) bond lengths are 3.63 Å. Both Sm(1)-Sm(4) bond lengths are 3.63 Å. In the second Sm site, Sm(2) is bonded to two equivalent Gd(1); two equivalent Gd(2); four Sm(1,1); and four Sm(3,3) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(2)Sm12 cuboctahedra; corners with six equivalent Sm(2)Sm8Gd4 cuboctahedra; corners with eight Sm(1,1)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(2)Sm12 cuboctahedra; edges with four equivalent Gd(1)Sm12 cuboctahedra; edges with four Sm(1,1)Sm8Gd4 cuboctahedra; edges with eight Sm(3,3)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with four Sm(1,1)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with six equivalent Sm(4)Sm8Gd4 cuboctahedra. The Sm(2)-Sm(1) bond length is 3.67 Å. All Sm(2)-Sm(3,3) bond lengths are 3.63 Å. In the third Sm site, Sm(3) is bonded to two equivalent Gd(1), two equivalent Gd(2), two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(3), and two equivalent Sm(4) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(1)Sm12 cuboctahedra; corners with four equivalent Sm(4)Sm8Gd4 cuboctahedra; corners with ten Sm(3,3)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(1)Sm12 cuboctahedra; edges with two equivalent Sm(3)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(4)Sm8Gd4 cuboctahedra; edges with four equivalent Gd(2)Sm12 cuboctahedra; edges with four equivalent Sm(1)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with eight Sm(1,1)Sm8Gd4 cuboctahedra. Both Sm(3)-Sm(1) bond lengths are 3.63 Å. There is one shorter (3.64 Å) and one longer (3.72 Å) Sm(3)-Sm(3) bond length. There is one shorter (3.63 Å) and one longer (3.71 Å) Sm(3)-Sm(4) bond length. In the fourth Sm site, Sm(4) is bonded to two equivalent Gd(1); two equivalent Gd(2); four Sm(1,1); and four Sm(3,3) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(1)Sm12 cuboctahedra; corners with six equivalent Sm(4)Sm8Gd4 cuboctahedra; corners with eight Sm(3,3)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(1)Sm12 cuboctahedra; edges with four equivalent Gd(2)Sm12 cuboctahedra; edges with four Sm(3,3)Sm8Gd4 cuboctahedra; edges with eight Sm(1,1)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four Sm(1,1)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with six equivalent Sm(2)Sm8Gd4 cuboctahedra. Both Sm(4)-Sm(1) bond lengths are 3.63 Å. There is one shorter (3.63 Å) and one longer (3.71 Å) Sm(4)-Sm(3) bond length. In the fifth Sm site, Sm(3) is bonded to two equivalent Gd(1), two equivalent Gd(2), two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(3), and two equivalent Sm(4) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(1)Sm12 cuboctahedra; corners with four equivalent Sm(4)Sm8Gd4 cuboctahedra; corners with ten Sm(3,3)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(1)Sm12 cuboctahedra; edges with two equivalent Sm(3)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(4)Sm8Gd4 cuboctahedra; edges with four equivalent Gd(2)Sm12 cuboctahedra; edges with four equivalent Sm(1)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four Sm(3,3)Sm8Gd4 cuboctahedra; and faces with eight equivalent Sm(1)Sm8Gd4 cuboctahedra. In the sixth Sm site, Sm(1) is bonded to two equivalent Gd(1), two equivalent Gd(2), two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(3), and two equivalent Sm(4) atoms to form SmSm8Gd4 cuboctahedra that share corners with four equivalent Gd(2)Sm12 cuboctahedra; corners with four equivalent Sm(2)Sm8Gd4 cuboctahedra; corners with ten Sm(1,1)Sm8Gd4 cuboctahedra; edges with two equivalent Gd(2)Sm12 cuboctahedra; edges with two equivalent Sm(1)Sm8Gd4 cuboctahedra; edges with two equivalent Sm(2)Sm8Gd4 cuboctahedra; edges with four equivalent Gd(1)Sm12 cuboctahedra; edges with four equivalent Sm(3)Sm8Gd4 cuboctahedra; edges with four equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with two equivalent Gd(1)Sm12 cuboctahedra; faces with two equivalent Gd(2)Sm12 cuboctahedra; faces with two equivalent Sm(2)Sm8Gd4 cuboctahedra; faces with two equivalent Sm(4)Sm8Gd4 cuboctahedra; faces with four Sm(1,1)Sm8Gd4 cuboctahedra; and faces with eight Sm(3,3)Sm8Gd4 cuboctahedra. Both Sm(1)-Gd(1) bond lengths are 3.62 Å. Both Sm(1)-Sm(1) bond lengths are 3.68 Å. Both Sm(1)-Sm(3) bond lengths are 3.63 Å.