Mg2Sn crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 6-coordinate geometry to six equivalent Sn(1) atoms. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to four equivalent Sn(1) atoms. Sn(1) is bonded in a 10-coordinate geometry to four equivalent Mg(2) and six equivalent Mg(1) atoms.
Mg2Sn crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 6-coordinate geometry to six equivalent Sn(1) atoms. There are two shorter (3.19 Å) and four longer (3.22 Å) Mg(1)-Sn(1) bond lengths. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to four equivalent Sn(1) atoms. All Mg(2)-Sn(1) bond lengths are 3.13 Å. Sn(1) is bonded in a 10-coordinate geometry to four equivalent Mg(2) and six equivalent Mg(1) atoms.