Pt5La crystallizes in the hexagonal P6/mmm space group. La(1) is bonded in a 18-coordinate geometry to six equivalent Pt(1) and twelve equivalent Pt(2) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to three equivalent La(1) and six equivalent Pt(2) atoms. In the second Pt site, Pt(2) is bonded to four equivalent La(1), four equivalent Pt(1), and four equivalent Pt(2) atoms to form a mixture of edge, face, and corner-sharing PtLa4Pt8 cuboctahedra.
Pt5La crystallizes in the hexagonal P6/mmm space group. La(1) is bonded in a 18-coordinate geometry to six equivalent Pt(1) and twelve equivalent Pt(2) atoms. All La(1)-Pt(1) bond lengths are 3.13 Å. All La(1)-Pt(2) bond lengths are 3.49 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to three equivalent La(1) and six equivalent Pt(2) atoms. All Pt(1)-Pt(2) bond lengths are 2.70 Å. In the second Pt site, Pt(2) is bonded to four equivalent La(1), four equivalent Pt(1), and four equivalent Pt(2) atoms to form a mixture of edge, face, and corner-sharing PtLa4Pt8 cuboctahedra. All Pt(2)-Pt(2) bond lengths are 2.71 Å.