BaPt5 crystallizes in the hexagonal P6/mmm space group. Ba(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 Ba(1) and six equivalent Pt(2) atoms. In the second Pt site, Pt(2) is bonded to four equivalent Ba(1), four equivalent Pt(1), and four equivalent Pt(2) atoms to form a mixture of corner, edge, and face-sharing PtBa4Pt8 cuboctahedra.
BaPt5 crystallizes in the hexagonal P6/mmm space group. Ba(1) is bonded in a 18-coordinate geometry to six equivalent Pt(1) and twelve equivalent Pt(2) atoms. All Ba(1)-Pt(1) bond lengths are 3.23 Å. All Ba(1)-Pt(2) bond lengths are 3.53 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to three equivalent Ba(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 Ba(1), four equivalent Pt(1), and four equivalent Pt(2) atoms to form a mixture of corner, edge, and face-sharing PtBa4Pt8 cuboctahedra. All Pt(2)-Pt(2) bond lengths are 2.80 Å.