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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on UGa3 by Materials Project

UGa3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. U is bonded to twelve equivalent Ga atoms to form UGa12 cuboctahedra that share corners with twelve equivalent UGa12 cuboctahedra, edges with twenty-four equivalent GaU4Ga8 cuboctahedra, faces with six equivalent UGa12 cuboctahedra, and faces with twelve equivalent GaU4Ga8 cuboctahedra. All U–Ga bond lengths are 3.00 Å. Ga is bonded to four equivalent U and eight equivalent Ga atoms to form distorted GaU4Ga8 cuboctahedra that share corners with twelve equivalent GaU4Ga8 cuboctahedra, edges with eight equivalent UGa12 cuboctahedra, edges with sixteen equivalent GaU4Ga8 cuboctahedra, faces with four equivalent UGa12 cuboctahedra, and faces with fourteen equivalent GaU4Ga8 cuboctahedra. All Ga–Ga bond lengths are 3.00 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on UGa2 by Materials Project

UGa2 is hexagonal omega structure structured and crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. U is bonded to twelve equivalent Ga atoms to form a mixture of edge and face-sharing UGa12 cuboctahedra. All U–Ga bond lengths are 3.16 Å. Ga is bonded in a 9-coordinate geometry to six equivalent U and three equivalent Ga atoms. All Ga–Ga bond lengths are 2.45 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U3Ga5 by Materials Project

U3Ga5 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent U sites. In the first U site, U is bonded in a 9-coordinate geometry to nine Ga atoms. There are a spread of U–Ga bond distances ranging from 2.92–3.29 Å. In the second U site, U is bonded in a 10-coordinate geometry to ten Ga atoms. There are a spread of U–Ga bond distances ranging from 2.98–3.17 Å. There are three inequivalent Ga sites. In the first Ga site, Ga is bonded in a 5-coordinate geometry to five U and four Ga atoms. There are two shorter (2.78 Å) and two longer (2.82 Å) Ga–Ga bond lengths. In the second Ga site, Ga is bonded in a 9-coordinate geometry to six U and three Ga atoms. Both Ga–Ga bond lengths are 2.65 Å. In the third Ga site, Ga is bonded in a 9-coordinate geometry to six U and three Ga atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on UGa by Materials Project

U(Ga) crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. U is bonded to six equivalent U and six equivalent Ga atoms to form UU6Ga6 cuboctahedra that share corners with eighteen equivalent UU6Ga6 cuboctahedra, edges with six equivalent UU6Ga6 cuboctahedra, edges with twelve equivalent GaU6Ga6 cuboctahedra, faces with eight equivalent UU6Ga6 cuboctahedra, and faces with twelve equivalent GaU6Ga6 cuboctahedra. All U–U bond lengths are 2.93 Å. All U–Ga bond lengths are 3.13 Å. Ga is bonded to six equivalent U and six equivalent Ga atoms to form GaU6Ga6 cuboctahedra that share corners with eighteen equivalent GaU6Ga6 cuboctahedra, edges with six equivalent GaU6Ga6 cuboctahedra, edges with twelve equivalent UU6Ga6 cuboctahedra, faces with eight equivalent GaU6Ga6 cuboctahedra, and faces with twelve equivalent UU6Ga6 cuboctahedra. All Ga–Ga bond lengths are 2.93 Å.

36 MATERIALS SCIENCE↗