Sr2FeWO6 crystallizes in the triclinic P-1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 12-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. In the second Sr site, Sr(2) is bonded in a 12-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(6) atoms to form WO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra and corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-20°. In the second W site, W(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form WO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra and corners with four equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-18°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent W(2)O6 octahedra and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-20°. In the second Fe site, Fe(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with two equivalent W(1)O6 octahedra and corners with four equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-20°. There are six inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Sr(2), one W(1), and one Fe(1) atom to form a mixture of distorted edge and corner-sharing OSr4FeW octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent Sr(2), one W(2), and one Fe(2) atom to form a mixture of distorted edge and corner-sharing OSr4FeW octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one W(2), and one Fe(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one W(1), and one Fe(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one W(2), and one Fe(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one W(1), and one Fe(1) atom.
Sr2FeWO6 crystallizes in the triclinic P-1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 12-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. There is one shorter (2.87 Å) and one longer (2.88 Å) Sr(1)-O(1) bond length. There is one shorter (2.79 Å) and one longer (2.80 Å) Sr(1)-O(2) bond length. There is one shorter (2.63 Å) and one longer (3.10 Å) Sr(1)-O(3) bond length. There is one shorter (2.62 Å) and one longer (3.12 Å) Sr(1)-O(4) bond length. There is one shorter (2.60 Å) and one longer (3.03 Å) Sr(1)-O(5) bond length. There is one shorter (2.67 Å) and one longer (3.17 Å) Sr(1)-O(6) bond length. In the second Sr site, Sr(2) is bonded in a 12-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. Both Sr(2)-O(1) bond lengths are 2.89 Å. There is one shorter (2.77 Å) and one longer (2.78 Å) Sr(2)-O(2) bond length. There is one shorter (2.63 Å) and one longer (3.10 Å) Sr(2)-O(3) bond length. There is one shorter (2.62 Å) and one longer (3.12 Å) Sr(2)-O(4) bond length. There is one shorter (2.62 Å) and one longer (3.04 Å) Sr(2)-O(5) bond length. There is one shorter (2.67 Å) and one longer (3.16 Å) Sr(2)-O(6) bond length. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(6) atoms to form WO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra and corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-20°. Both W(1)-O(1) bond lengths are 1.97 Å. Both W(1)-O(4) bond lengths are 1.92 Å. Both W(1)-O(6) bond lengths are 1.98 Å. In the second W site, W(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form WO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra and corners with four equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-18°. Both W(2)-O(2) bond lengths are 2.03 Å. Both W(2)-O(3) bond lengths are 2.07 Å. Both W(2)-O(5) bond lengths are 1.93 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent W(2)O6 octahedra and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-20°. Both Fe(1)-O(1) bond lengths are 2.10 Å. Both Fe(1)-O(3) bond lengths are 2.00 Å. Both Fe(1)-O(6) bond lengths are 2.09 Å. In the second Fe site, Fe(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with two equivalent W(1)O6 octahedra and corners with four equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-20°. Both Fe(2)-O(2) bond lengths are 2.04 Å. Both Fe(2)-O(4) bond lengths are 2.16 Å. Both Fe(2)-O(5) bond lengths are 2.12 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Sr(2), one W(1), and one Fe(1) atom to form a mixture of distorted edge and corner-sharing OSr4FeW octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent Sr(2), one W(2), and one Fe(2) atom to form a mixture of distorted edge and corner-sharing OSr4FeW octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one W(2), and one Fe(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one W(1), and one Fe(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one W(2), and one Fe(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one W(1), and one Fe(1) atom.