MgY3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Mg(1) is bonded to twelve equivalent Y(1) atoms to form MgY12 cuboctahedra that share corners with twelve equivalent Mg(1)Y12 cuboctahedra, edges with twenty-four equivalent Y(1)Y8Mg4 cuboctahedra, faces with six equivalent Mg(1)Y12 cuboctahedra, and faces with twelve equivalent Y(1)Y8Mg4 cuboctahedra. Y(1) is bonded to four equivalent Mg(1) and eight equivalent Y(1) atoms to form YY8Mg4 cuboctahedra that share corners with twelve equivalent Y(1)Y8Mg4 cuboctahedra, edges with eight equivalent Mg(1)Y12 cuboctahedra, edges with sixteen equivalent Y(1)Y8Mg4 cuboctahedra, faces with four equivalent Mg(1)Y12 cuboctahedra, and faces with fourteen equivalent Y(1)Y8Mg4 cuboctahedra.
MgY3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Mg(1) is bonded to twelve equivalent Y(1) atoms to form MgY12 cuboctahedra that share corners with twelve equivalent Mg(1)Y12 cuboctahedra, edges with twenty-four equivalent Y(1)Y8Mg4 cuboctahedra, faces with six equivalent Mg(1)Y12 cuboctahedra, and faces with twelve equivalent Y(1)Y8Mg4 cuboctahedra. All Mg(1)-Y(1) bond lengths are 3.50 Å. Y(1) is bonded to four equivalent Mg(1) and eight equivalent Y(1) atoms to form YY8Mg4 cuboctahedra that share corners with twelve equivalent Y(1)Y8Mg4 cuboctahedra, edges with eight equivalent Mg(1)Y12 cuboctahedra, edges with sixteen equivalent Y(1)Y8Mg4 cuboctahedra, faces with four equivalent Mg(1)Y12 cuboctahedra, and faces with fourteen equivalent Y(1)Y8Mg4 cuboctahedra. All Y(1)-Y(1) bond lengths are 3.50 Å.