Mg2PtSi crystallizes in the hexagonal P6_3/mmc space group. Mg(1) is bonded in a 11-coordinate geometry to four equivalent Mg(1), four equivalent Pt(1), and three equivalent Si(1) atoms. Pt(1) is bonded in a 11-coordinate geometry to eight equivalent Mg(1) and three equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to six equivalent Mg(1) and three equivalent Pt(1) atoms.
Mg2PtSi crystallizes in the hexagonal P6_3/mmc space group. Mg(1) is bonded in a 11-coordinate geometry to four equivalent Mg(1), four equivalent Pt(1), and three equivalent Si(1) atoms. There is one shorter (2.79 Å) and three longer (2.87 Å) Mg(1)-Mg(1) bond lengths. There are three shorter (2.83 Å) and one longer (2.86 Å) Mg(1)-Pt(1) bond length. All Mg(1)-Si(1) bond lengths are 2.83 Å. Pt(1) is bonded in a 11-coordinate geometry to eight equivalent Mg(1) and three equivalent Si(1) atoms. All Pt(1)-Si(1) bond lengths are 2.46 Å. Si(1) is bonded in a 9-coordinate geometry to six equivalent Mg(1) and three equivalent Pt(1) atoms.