MgPt2 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded in a 9-coordinate geometry to four equivalent Pt(1) and five equivalent Pt(2) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 4-coordinate geometry to four equivalent Mg(1) atoms. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to five equivalent Mg(1) atoms.
MgPt2 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded in a 9-coordinate geometry to four equivalent Pt(1) and five equivalent Pt(2) atoms. There are two shorter (2.75 Å) and two longer (2.84 Å) Mg(1)-Pt(1) bond lengths. There are a spread of Mg(1)-Pt(2) bond distances ranging from 2.78-2.82 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 4-coordinate geometry to four equivalent Mg(1) atoms. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to five equivalent Mg(1) atoms.