Lu5Pt4 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 6-coordinate geometry to one Pt(3), two equivalent Pt(2), and three equivalent Pt(1) atoms. In the second Lu site, Lu(2) is bonded in a 7-coordinate geometry to one Pt(2), two equivalent Pt(3), and four equivalent Pt(1) atoms. In the third Lu site, Lu(3) is bonded to two equivalent Pt(1), two equivalent Pt(2), and two equivalent Pt(3) atoms to form distorted corner-sharing LuPt6 octahedra. The corner-sharing octahedral tilt angles range from 47-53°. There are three inequivalent Pt sites. In the first Pt site, Pt(3) is bonded in a 9-coordinate geometry to two equivalent Lu(1), two equivalent Lu(3), four equivalent Lu(2), and one Pt(2) atom. In the second Pt site, Pt(1) is bonded in a 8-coordinate geometry to one Lu(3), three equivalent Lu(1), and four equivalent Lu(2) atoms. In the third Pt site, Pt(2) is bonded in a 9-coordinate geometry to two equivalent Lu(2), two equivalent Lu(3), four equivalent Lu(1), and one Pt(3) atom.
Lu5Pt4 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 6-coordinate geometry to one Pt(3), two equivalent Pt(2), and three equivalent Pt(1) atoms. The Lu(1)-Pt(3) bond length is 2.93 Å. Both Lu(1)-Pt(2) bond lengths are 2.86 Å. There are two shorter (2.77 Å) and one longer (2.91 Å) Lu(1)-Pt(1) bond length. In the second Lu site, Lu(2) is bonded in a 7-coordinate geometry to one Pt(2), two equivalent Pt(3), and four equivalent Pt(1) atoms. The Lu(2)-Pt(2) bond length is 3.12 Å. There is one shorter (2.89 Å) and one longer (3.30 Å) Lu(2)-Pt(3) bond length. There are a spread of Lu(2)-Pt(1) bond distances ranging from 2.89-3.16 Å. In the third Lu site, Lu(3) is bonded to two equivalent Pt(1), two equivalent Pt(2), and two equivalent Pt(3) atoms to form distorted corner-sharing LuPt6 octahedra. The corner-sharing octahedral tilt angles range from 47-53°. Both Lu(3)-Pt(1) bond lengths are 3.00 Å. There is one shorter (2.82 Å) and one longer (3.10 Å) Lu(3)-Pt(2) bond length. There is one shorter (2.74 Å) and one longer (2.81 Å) Lu(3)-Pt(3) bond length. There are three inequivalent Pt sites. In the first Pt site, Pt(3) is bonded in a 9-coordinate geometry to two equivalent Lu(1), two equivalent Lu(3), four equivalent Lu(2), and one Pt(2) atom. The Pt(3)-Pt(2) bond length is 2.76 Å. In the second Pt site, Pt(1) is bonded in a 8-coordinate geometry to one Lu(3), three equivalent Lu(1), and four equivalent Lu(2) atoms. In the third Pt site, Pt(2) is bonded in a 9-coordinate geometry to two equivalent Lu(2), two equivalent Lu(3), four equivalent Lu(1), and one Pt(3) atom.