Dy(PtSi)2 crystallizes in the tetragonal I4/mmm space group. Dy(1) is bonded in a 16-coordinate geometry to eight equivalent Pt(1) and eight equivalent Si(1) atoms. Pt(1) is bonded to four equivalent Dy(1) and four equivalent Si(1) atoms to form a mixture of distorted edge, face, and corner-sharing PtDy4Si4 tetrahedra. Si(1) is bonded in a 9-coordinate geometry to four equivalent Dy(1), four equivalent Pt(1), and one Si(1) atom.
Dy(PtSi)2 crystallizes in the tetragonal I4/mmm space group. Dy(1) is bonded in a 16-coordinate geometry to eight equivalent Pt(1) and eight equivalent Si(1) atoms. All Dy(1)-Pt(1) bond lengths are 3.24 Å. All Dy(1)-Si(1) bond lengths are 3.19 Å. Pt(1) is bonded to four equivalent Dy(1) and four equivalent Si(1) atoms to form a mixture of distorted edge, face, and corner-sharing PtDy4Si4 tetrahedra. All Pt(1)-Si(1) bond lengths are 2.47 Å. Si(1) is bonded in a 9-coordinate geometry to four equivalent Dy(1), four equivalent Pt(1), and one Si(1) atom. The Si(1)-Si(1) bond length is 2.32 Å.