SrMg6Ga crystallizes in the orthorhombic Amm2 space group. Sr(1) is bonded in a 10-coordinate geometry to two equivalent Mg(1), two equivalent Mg(3), four equivalent Mg(2), and two equivalent Ga(1) atoms. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 1-coordinate geometry to one Sr(1), two equivalent Mg(2), two equivalent Mg(3), and one Ga(1) atom. In the second Mg site, Mg(2) is bonded in a 10-coordinate geometry to two equivalent Sr(1), one Mg(3), one Mg(4), two equivalent Mg(1), two equivalent Mg(2), and two equivalent Ga(1) atoms. In the third Mg site, Mg(3) is bonded in a 10-coordinate geometry to two equivalent Sr(1), two equivalent Mg(2), two equivalent Mg(4), and four equivalent Mg(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Mg(2) and two equivalent Mg(3) atoms. Ga(1) is bonded in a 8-coordinate geometry to two equivalent Sr(1), two equivalent Mg(1), and four equivalent Mg(2) atoms.
SrMg6Ga crystallizes in the orthorhombic Amm2 space group. Sr(1) is bonded in a 10-coordinate geometry to two equivalent Mg(1), two equivalent Mg(3), four equivalent Mg(2), and two equivalent Ga(1) atoms. Both Sr(1)-Mg(1) bond lengths are 3.56 Å. Both Sr(1)-Mg(3) bond lengths are 3.38 Å. All Sr(1)-Mg(2) bond lengths are 3.40 Å. Both Sr(1)-Ga(1) bond lengths are 3.28 Å. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 1-coordinate geometry to one Sr(1), two equivalent Mg(2), two equivalent Mg(3), and one Ga(1) atom. Both Mg(1)-Mg(2) bond lengths are 3.11 Å. Both Mg(1)-Mg(3) bond lengths are 3.09 Å. The Mg(1)-Ga(1) bond length is 2.93 Å. In the second Mg site, Mg(2) is bonded in a 10-coordinate geometry to two equivalent Sr(1), one Mg(3), one Mg(4), two equivalent Mg(1), two equivalent Mg(2), and two equivalent Ga(1) atoms. The Mg(2)-Mg(3) bond length is 3.14 Å. The Mg(2)-Mg(4) bond length is 3.37 Å. There is one shorter (3.03 Å) and one longer (3.14 Å) Mg(2)-Mg(2) bond length. Both Mg(2)-Ga(1) bond lengths are 2.98 Å. In the third Mg site, Mg(3) is bonded in a 10-coordinate geometry to two equivalent Sr(1), two equivalent Mg(2), two equivalent Mg(4), and four equivalent Mg(1) atoms. Both Mg(3)-Mg(4) bond lengths are 3.24 Å. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Mg(2) and two equivalent Mg(3) atoms. Ga(1) is bonded in a 8-coordinate geometry to two equivalent Sr(1), two equivalent Mg(1), and four equivalent Mg(2) atoms.