Mg2Sr is Tungsten Carbide-like structured and crystallizes in the hexagonal P-6m2 space group. Sr(1) is bonded in a 6-coordinate geometry to three equivalent Mg(2) and three equivalent Mg(3) atoms. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to six equivalent Mg(2) atoms to form distorted edge-sharing MgMg6 pentagonal pyramids. In the second Mg site, Mg(2) is bonded to three equivalent Sr(1) and three equivalent Mg(1) atoms to form a mixture of distorted edge, face, and corner-sharing MgSr3Mg3 pentagonal pyramids. In the third Mg site, Mg(3) is bonded in a 6-coordinate geometry to six equivalent Sr(1) atoms.
Mg2Sr is Tungsten Carbide-like structured and crystallizes in the hexagonal P-6m2 space group. Sr(1) is bonded in a 6-coordinate geometry to three equivalent Mg(2) and three equivalent Mg(3) atoms. All Sr(1)-Mg(2) bond lengths are 3.62 Å. All Sr(1)-Mg(3) bond lengths are 3.59 Å. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to six equivalent Mg(2) atoms to form distorted edge-sharing MgMg6 pentagonal pyramids. All Mg(1)-Mg(2) bond lengths are 3.07 Å. In the second Mg site, Mg(2) is bonded to three equivalent Sr(1) and three equivalent Mg(1) atoms to form a mixture of distorted edge, face, and corner-sharing MgSr3Mg3 pentagonal pyramids. In the third Mg site, Mg(3) is bonded in a 6-coordinate geometry to six equivalent Sr(1) atoms.