BaSrEuWO6 crystallizes in the tetragonal P-4n2 space group. Ba(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. Sr(1) is bonded in a distorted body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. Eu(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form EuO6 octahedra that share corners with six equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-29°. W(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form WO6 octahedra that share corners with six equivalent Eu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-29°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ba(1), two equivalent Sr(1), one Eu(1), and one W(1) atom to form a mixture of distorted corner and edge-sharing OBa2Sr2EuW octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(1), one Eu(1), and one W(1) atom.
BaSrEuWO6 crystallizes in the tetragonal P-4n2 space group. Ba(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. All Ba(1)-O(1) bond lengths are 3.01 Å. All Ba(1)-O(2) bond lengths are 2.80 Å. Sr(1) is bonded in a distorted body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. All Sr(1)-O(1) bond lengths are 3.01 Å. All Sr(1)-O(2) bond lengths are 2.64 Å. Eu(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form EuO6 octahedra that share corners with six equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-29°. Both Eu(1)-O(1) bond lengths are 2.38 Å. All Eu(1)-O(2) bond lengths are 2.40 Å. W(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form WO6 octahedra that share corners with six equivalent Eu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-29°. Both W(1)-O(1) bond lengths are 1.99 Å. All W(1)-O(2) bond lengths are 1.97 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ba(1), two equivalent Sr(1), one Eu(1), and one W(1) atom to form a mixture of distorted corner and edge-sharing OBa2Sr2EuW octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(1), one Eu(1), and one W(1) atom.