Sr3W is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent Sr(2) and four equivalent W(1) atoms to form a mixture of distorted corner, edge, and face-sharing SrSr4W4 tetrahedra. In the second Sr site, Sr(2) is bonded in a 14-coordinate geometry to eight equivalent Sr(1) and six equivalent W(1) atoms. W(1) is bonded in a distorted body-centered cubic geometry to six equivalent Sr(2) and eight equivalent Sr(1) atoms.
Sr3W is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent Sr(2) and four equivalent W(1) atoms to form a mixture of distorted corner, edge, and face-sharing SrSr4W4 tetrahedra. All Sr(1)-Sr(2) bond lengths are 3.58 Å. All Sr(1)-W(1) bond lengths are 3.58 Å. In the second Sr site, Sr(2) is bonded in a 14-coordinate geometry to eight equivalent Sr(1) and six equivalent W(1) atoms. All Sr(2)-W(1) bond lengths are 4.13 Å. W(1) is bonded in a distorted body-centered cubic geometry to six equivalent Sr(2) and eight equivalent Sr(1) atoms.