UFeGa5 crystallizes in the tetragonal P4/mmm space group. U(1) is bonded to four equivalent Ga(1) and eight Ga(2,2) atoms to form distorted 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(1)U4Ga8 cuboctahedra. Fe(1) is bonded in a distorted body-centered cubic geometry to eight Ga(2,2) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to four equivalent U(1) and eight Ga(2,2) atoms to form GaU4Ga8 cuboctahedra that share corners with four equivalent Ga(1)U4Ga8 cuboctahedra, faces with four equivalent U(1)Ga12 cuboctahedra, and faces with four equivalent Ga(1)U4Ga8 cuboctahedra. In the second Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Fe(1); two equivalent Ga(1); and five Ga(2,2) atoms. In the third Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Fe(1); two equivalent Ga(1); and five Ga(2,2) atoms.
UFeGa5 crystallizes in the tetragonal P4/mmm space group. U(1) is bonded to four equivalent Ga(1) and eight Ga(2,2) atoms to form distorted 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(1)U4Ga8 cuboctahedra. All U(1)-Ga(1) bond lengths are 3.04 Å. All U(1)-Ga(2,2) bond lengths are 2.97 Å. Fe(1) is bonded in a distorted body-centered cubic geometry to eight Ga(2,2) atoms. All Fe(1)-Ga(2,2) bond lengths are 2.50 Å. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to four equivalent U(1) and eight Ga(2,2) atoms to form GaU4Ga8 cuboctahedra that share corners with four equivalent Ga(1)U4Ga8 cuboctahedra, faces with four equivalent U(1)Ga12 cuboctahedra, and faces with four equivalent Ga(1)U4Ga8 cuboctahedra. All Ga(1)-Ga(2,2) bond lengths are 2.97 Å. In the second Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Fe(1); two equivalent Ga(1); and five Ga(2,2) atoms. There is one shorter (2.53 Å) and four longer (3.04 Å) Ga(2)-Ga(2,2) bond lengths. In the third Ga site, Ga(2) is bonded in a 11-coordinate geometry to two equivalent U(1); two equivalent Fe(1); two equivalent Ga(1); and five Ga(2,2) atoms. All Ga(2)-Ga(2) bond lengths are 3.04 Å.