SrMg crystallizes in the monoclinic Cm space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to three equivalent Sr(2), one Mg(3), two equivalent Mg(1), and two equivalent Mg(2) atoms. In the second Sr site, Sr(2) is bonded in a 13-coordinate geometry to two equivalent Sr(2), two equivalent Sr(3), three equivalent Sr(1), two equivalent Mg(1), two equivalent Mg(2), and two equivalent Mg(3) atoms. In the third Sr site, Sr(3) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Mg(1), two equivalent Mg(2), and two equivalent Mg(3) atoms. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 9-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), two equivalent Sr(3), one Mg(2), and two equivalent Mg(3) atoms. In the second Mg site, Mg(2) is bonded in a 9-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), two equivalent Sr(3), one Mg(1), and two equivalent Mg(3) atoms. In the third Mg site, Mg(3) is bonded in a distorted q6 geometry to one Sr(1), two equivalent Sr(2), two equivalent Sr(3), two equivalent Mg(1), and two equivalent Mg(2) atoms.
SrMg crystallizes in the monoclinic Cm space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to three equivalent Sr(2), one Mg(3), two equivalent Mg(1), and two equivalent Mg(2) atoms. There is one shorter (3.93 Å) and two longer (4.10 Å) Sr(1)-Sr(2) bond lengths. The Sr(1)-Mg(3) bond length is 3.67 Å. Both Sr(1)-Mg(1) bond lengths are 3.55 Å. Both Sr(1)-Mg(2) bond lengths are 3.56 Å. In the second Sr site, Sr(2) is bonded in a 13-coordinate geometry to two equivalent Sr(2), two equivalent Sr(3), three equivalent Sr(1), two equivalent Mg(1), two equivalent Mg(2), and two equivalent Mg(3) atoms. Both Sr(2)-Sr(2) bond lengths are 4.00 Å. There is one shorter (3.91 Å) and one longer (4.08 Å) Sr(2)-Sr(3) bond length. Both Sr(2)-Mg(1) bond lengths are 4.04 Å. Both Sr(2)-Mg(2) bond lengths are 3.69 Å. Both Sr(2)-Mg(3) bond lengths are 3.92 Å. In the third Sr site, Sr(3) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Mg(1), two equivalent Mg(2), and two equivalent Mg(3) atoms. Both Sr(3)-Mg(1) bond lengths are 3.74 Å. Both Sr(3)-Mg(2) bond lengths are 3.64 Å. Both Sr(3)-Mg(3) bond lengths are 3.67 Å. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 9-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), two equivalent Sr(3), one Mg(2), and two equivalent Mg(3) atoms. The Mg(1)-Mg(2) bond length is 3.13 Å. Both Mg(1)-Mg(3) bond lengths are 3.30 Å. In the second Mg site, Mg(2) is bonded in a 9-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), two equivalent Sr(3), one Mg(1), and two equivalent Mg(3) atoms. Both Mg(2)-Mg(3) bond lengths are 3.21 Å. In the third Mg site, Mg(3) is bonded in a distorted q6 geometry to one Sr(1), two equivalent Sr(2), two equivalent Sr(3), two equivalent Mg(1), and two equivalent Mg(2) atoms.