Be5Pt crystallizes in the cubic F-43m space group. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded to twelve equivalent Be(2) and four equivalent Pt(1) atoms to form distorted BeBe12Pt4 tetrahedra that share corners with twelve equivalent Be(2)Be9Pt3 cuboctahedra, faces with twenty-eight equivalent Be(2)Be9Pt3 cuboctahedra, and faces with twelve equivalent Be(1)Be12Pt4 tetrahedra. In the second Be site, Be(2) is bonded to three equivalent Be(1), six equivalent Be(2), and three equivalent Pt(1) atoms to form distorted BeBe9Pt3 cuboctahedra that share corners with eighteen equivalent Be(2)Be9Pt3 cuboctahedra, corners with three equivalent Be(1)Be12Pt4 tetrahedra, edges with six equivalent Be(2)Be9Pt3 cuboctahedra, faces with eighteen equivalent Be(2)Be9Pt3 cuboctahedra, and faces with seven equivalent Be(1)Be12Pt4 tetrahedra. Pt(1) is bonded in a 16-coordinate geometry to four equivalent Be(1) and twelve equivalent Be(2) atoms.
Be5Pt crystallizes in the cubic F-43m space group. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded to twelve equivalent Be(2) and four equivalent Pt(1) atoms to form distorted BeBe12Pt4 tetrahedra that share corners with twelve equivalent Be(2)Be9Pt3 cuboctahedra, faces with twenty-eight equivalent Be(2)Be9Pt3 cuboctahedra, and faces with twelve equivalent Be(1)Be12Pt4 tetrahedra. All Be(1)-Be(2) bond lengths are 2.47 Å. All Be(1)-Pt(1) bond lengths are 2.58 Å. In the second Be site, Be(2) is bonded to three equivalent Be(1), six equivalent Be(2), and three equivalent Pt(1) atoms to form distorted BeBe9Pt3 cuboctahedra that share corners with eighteen equivalent Be(2)Be9Pt3 cuboctahedra, corners with three equivalent Be(1)Be12Pt4 tetrahedra, edges with six equivalent Be(2)Be9Pt3 cuboctahedra, faces with eighteen equivalent Be(2)Be9Pt3 cuboctahedra, and faces with seven equivalent Be(1)Be12Pt4 tetrahedra. There are three shorter (2.10 Å) and three longer (2.12 Å) Be(2)-Be(2) bond lengths. All Be(2)-Pt(1) bond lengths are 2.47 Å. Pt(1) is bonded in a 16-coordinate geometry to four equivalent Be(1) and twelve equivalent Be(2) atoms.