U2CoNiGa10 crystallizes in the tetragonal P4/mmm space group. U(1) is bonded to four Ga(1,1); four Ga(2,2); and four equivalent Ga(3) atoms to form UGa12 cuboctahedra that share corners with four equivalent U(1)Ga12 cuboctahedra, faces with four equivalent U(1)Ga12 cuboctahedra, and faces with four equivalent Ga(3)U4Ga8 cuboctahedra. Co(1) is bonded in a body-centered cubic geometry to eight Ga(1,1,1) atoms. Ni(1) is bonded in a body-centered cubic geometry to eight Ga(2,2,2,2) atoms. There are eight inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Co(1); two equivalent Ga(3); and five Ga(1,1) atoms. In the second Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Ni(1); two equivalent Ga(3); and five Ga(2,2) atoms. In the third Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Co(1); two equivalent Ga(3); and five Ga(1,1) atoms. In the fourth Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Ni(1); two equivalent Ga(3); and five Ga(2,2) atoms. In the fifth Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Ni(1); two equivalent Ga(3); and five Ga(2,2) atoms. In the sixth Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Co(1); two equivalent Ga(3); and five Ga(1,1) atoms. In the seventh Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Ni(1); two equivalent Ga(3); and five Ga(2,2) atoms. In the eighth Ga site, Ga(3) is bonded to four equivalent U(1); four Ga(1,1); and four Ga(2,2) atoms to form GaU4Ga8 cuboctahedra that share corners with four equivalent Ga(3)U4Ga8 cuboctahedra, faces with four equivalent U(1)Ga12 cuboctahedra, and faces with four equivalent Ga(3)U4Ga8 cuboctahedra.
U2CoNiGa10 crystallizes in the tetragonal P4/mmm space group. U(1) is bonded to four Ga(1,1); four Ga(2,2); and four equivalent Ga(3) atoms to form UGa12 cuboctahedra that share corners with four equivalent U(1)Ga12 cuboctahedra, faces with four equivalent U(1)Ga12 cuboctahedra, and faces with four equivalent Ga(3)U4Ga8 cuboctahedra. All U(1)-Ga(1,1) bond lengths are 2.97 Å. All U(1)-Ga(2,2) bond lengths are 2.98 Å. All U(1)-Ga(3) bond lengths are 3.00 Å. Co(1) is bonded in a body-centered cubic geometry to eight Ga(1,1,1) atoms. All Co(1)-Ga(1,1,1) bond lengths are 2.49 Å. Ni(1) is bonded in a body-centered cubic geometry to eight Ga(2,2,2,2) atoms. All Ni(1)-Ga(2,2,2,2) bond lengths are 2.51 Å. There are eight inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Co(1); two equivalent Ga(3); and five Ga(1,1) atoms. Both Ga(1)-Ga(3) bond lengths are 2.98 Å. There is one shorter (2.62 Å) and four longer (3.00 Å) Ga(1)-Ga(1,1) bond lengths. In the second Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Ni(1); two equivalent Ga(3); and five Ga(2,2) atoms. Both Ga(2)-Ga(3) bond lengths are 2.97 Å. There is one shorter (2.66 Å) and four longer (3.00 Å) Ga(2)-Ga(2,2) bond lengths. In the third Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Co(1); two equivalent Ga(3); and five Ga(1,1) atoms. Both Ga(1)-U(1) bond lengths are 2.97 Å. Both Ga(1)-Ga(3) bond lengths are 2.98 Å. The Ga(1)-Ga(1) bond length is 2.62 Å. In the fourth Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Ni(1); two equivalent Ga(3); and five Ga(2,2) atoms. Both Ga(2)-Ga(3) bond lengths are 2.97 Å. The Ga(2)-Ga(2) bond length is 2.66 Å. In the fifth Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Ni(1); two equivalent Ga(3); and five Ga(2,2) atoms. Both Ga(2)-U(1) bond lengths are 2.98 Å. Both Ga(2)-Ga(3) bond lengths are 2.97 Å. All Ga(2)-Ga(2) bond lengths are 3.00 Å. In the sixth Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Co(1); two equivalent Ga(3); and five Ga(1,1) atoms. Both Ga(1)-Ga(3) bond lengths are 2.98 Å. All Ga(1)-Ga(1) bond lengths are 3.00 Å. In the seventh Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Ni(1); two equivalent Ga(3); and five Ga(2,2) atoms. Both Ga(2)-U(1) bond lengths are 2.98 Å. Both Ga(2)-Ga(3) bond lengths are 2.97 Å. In the eighth Ga site, Ga(3) is bonded to four equivalent U(1); four Ga(1,1); and four Ga(2,2) atoms to form GaU4Ga8 cuboctahedra that share corners with four equivalent Ga(3)U4Ga8 cuboctahedra, faces with four equivalent U(1)Ga12 cuboctahedra, and faces with four equivalent Ga(3)U4Ga8 cuboctahedra.