Y(PtSi)2 crystallizes in the tetragonal I4/mmm space group. Y(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 Y(1) and four equivalent Si(1) atoms to form a mixture of distorted face, corner, and edge-sharing PtY4Si4 tetrahedra. Si(1) is bonded in a 9-coordinate geometry to four equivalent Y(1), four equivalent Pt(1), and one Si(1) atom.
Y(PtSi)2 crystallizes in the tetragonal I4/mmm space group. Y(1) is bonded in a 16-coordinate geometry to eight equivalent Pt(1) and eight equivalent Si(1) atoms. All Y(1)-Pt(1) bond lengths are 3.25 Å. All Y(1)-Si(1) bond lengths are 3.18 Å. Pt(1) is bonded to four equivalent Y(1) and four equivalent Si(1) atoms to form a mixture of distorted face, corner, and edge-sharing PtY4Si4 tetrahedra. All Pt(1)-Si(1) bond lengths are 2.47 Å. Si(1) is bonded in a 9-coordinate geometry to four equivalent Y(1), four equivalent Pt(1), and one Si(1) atom. The Si(1)-Si(1) bond length is 2.33 Å.