Mg2Sr is Hexagonal Laves structured and crystallizes in the hexagonal P6_3/mmc space group. Sr(1) is bonded in a 16-coordinate geometry to four equivalent Sr(1), three equivalent Mg(2), and nine equivalent Mg(1) atoms. There are two inequivalent Mg sites. In the first Mg site, Mg(2) is bonded to six equivalent Sr(1) and six equivalent Mg(1) atoms to form a mixture of face, corner, and edge-sharing MgSr6Mg6 cuboctahedra. In the second Mg site, Mg(1) is bonded to six equivalent Sr(1), two equivalent Mg(2), and four equivalent Mg(1) atoms to form a mixture of face, corner, and edge-sharing MgSr6Mg6 cuboctahedra.
Mg2Sr is Hexagonal Laves structured and crystallizes in the hexagonal P6_3/mmc space group. Sr(1) is bonded in a 16-coordinate geometry to four equivalent Sr(1), three equivalent Mg(2), and nine equivalent Mg(1) atoms. There is one shorter (3.88 Å) and three longer (3.96 Å) Sr(1)-Sr(1) bond lengths. All Sr(1)-Mg(2) bond lengths are 3.81 Å. There are three shorter (3.69 Å) and six longer (3.79 Å) Sr(1)-Mg(1) bond lengths. There are two inequivalent Mg sites. In the first Mg site, Mg(2) is bonded to six equivalent Sr(1) and six equivalent Mg(1) atoms to form a mixture of face, corner, and edge-sharing MgSr6Mg6 cuboctahedra. All Mg(2)-Mg(1) bond lengths are 3.17 Å. In the second Mg site, Mg(1) is bonded to six equivalent Sr(1), two equivalent Mg(2), and four equivalent Mg(1) atoms to form a mixture of face, corner, and edge-sharing MgSr6Mg6 cuboctahedra. There are two shorter (3.24 Å) and two longer (3.26 Å) Mg(1)-Mg(1) bond lengths.