Mg2Sr crystallizes in the monoclinic C2/m space group. Sr(1) is bonded in a 9-coordinate geometry to four equivalent Mg(2) and five equivalent Mg(1) atoms. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 7-coordinate geometry to five equivalent Sr(1) and two equivalent Mg(2) atoms. In the second Mg site, Mg(2) is bonded in a distorted body-centered cubic geometry to four equivalent Sr(1), two equivalent Mg(1), and two equivalent Mg(2) atoms.
Mg2Sr crystallizes in the monoclinic C2/m space group. Sr(1) is bonded in a 9-coordinate geometry to four equivalent Mg(2) and five equivalent Mg(1) atoms. There are two shorter (3.57 Å) and two longer (3.65 Å) Sr(1)-Mg(2) bond lengths. There are a spread of Sr(1)-Mg(1) bond distances ranging from 3.58-3.72 Å. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 7-coordinate geometry to five equivalent Sr(1) and two equivalent Mg(2) atoms. Both Mg(1)-Mg(2) bond lengths are 3.16 Å. In the second Mg site, Mg(2) is bonded in a distorted body-centered cubic geometry to four equivalent Sr(1), two equivalent Mg(1), and two equivalent Mg(2) atoms. Both Mg(2)-Mg(2) bond lengths are 3.05 Å.