Ba2SrMgWO6 crystallizes in the monoclinic Cm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. In the second Ba site, Ba(2) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Sr(1) is bonded in a 4-coordinate geometry to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms. Mg(1) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. W(1) is bonded in a distorted octahedral geometry to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Ba(2), two equivalent Ba(1), one Sr(1), one Mg(1), and one W(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Sr(1), one Mg(1), and one W(1) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Ba(2), two equivalent Ba(1), one Sr(1), one Mg(1), and one W(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Ba(1), two equivalent Ba(2), one Sr(1), and one W(1) atom.
Ba2SrMgWO6 crystallizes in the monoclinic Cm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. The Ba(1)-O(4) bond length is 2.77 Å. Both Ba(1)-O(2) bond lengths are 2.72 Å. Both Ba(1)-O(3) bond lengths are 3.03 Å. There are two shorter (2.83 Å) and two longer (3.28 Å) Ba(1)-O(1) bond lengths. In the second Ba site, Ba(2) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. The Ba(2)-O(3) bond length is 2.48 Å. Both Ba(2)-O(1) bond lengths are 2.71 Å. Both Ba(2)-O(2) bond lengths are 2.97 Å. Both Ba(2)-O(4) bond lengths are 3.18 Å. Sr(1) is bonded in a 4-coordinate geometry to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms. The Sr(1)-O(3) bond length is 2.50 Å. The Sr(1)-O(4) bond length is 2.37 Å. Both Sr(1)-O(1) bond lengths are 3.09 Å. Both Sr(1)-O(2) bond lengths are 2.33 Å. Mg(1) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. The Mg(1)-O(3) bond length is 1.98 Å. Both Mg(1)-O(1) bond lengths are 2.06 Å. Both Mg(1)-O(2) bond lengths are 2.21 Å. W(1) is bonded in a distorted octahedral geometry to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms. The W(1)-O(3) bond length is 2.26 Å. The W(1)-O(4) bond length is 2.01 Å. Both W(1)-O(1) bond lengths are 2.18 Å. Both W(1)-O(2) bond lengths are 2.11 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Ba(2), two equivalent Ba(1), one Sr(1), one Mg(1), and one W(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Sr(1), one Mg(1), and one W(1) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Ba(2), two equivalent Ba(1), one Sr(1), one Mg(1), and one W(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Ba(1), two equivalent Ba(2), one Sr(1), and one W(1) atom.