Sr2SnFeO6 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Pmmm space group. Sr(1) is bonded to one O(4), one O(5), one O(7), one O(8), two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form SrO12 cuboctahedra that share corners with twelve equivalent Sr(1)O12 cuboctahedra, faces with six equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(2)O6 octahedra, faces with two equivalent Sn(1)O6 octahedra, and faces with two equivalent Sn(2)O6 octahedra. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(2), two equivalent O(6), and two equivalent O(8) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Fe site, Fe(2) is bonded to two equivalent O(1), two equivalent O(6), and two equivalent O(7) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form SnO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Sn site, Sn(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form SnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to four equivalent Sr(1), one Fe(2), and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to four equivalent Sr(1), one Fe(1), and one Sn(2) atom. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent Sr(1), one Sn(1), and one Sn(2) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to four equivalent Sr(1) and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded in a distorted linear geometry to four equivalent Sr(1) and two equivalent Sn(2) atoms. In the sixth O site, O(6) is bonded to four equivalent Sr(1), one Fe(1), and one Fe(2) atom to form a mixture of distorted corner, face, and edge-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the seventh O site, O(7) is bonded to four equivalent Sr(1) and two equivalent Fe(2) atoms to form a mixture of distorted corner, face, and edge-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the eighth O site, O(8) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form a mixture of distorted corner, face, and edge-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted.
Sr2SnFeO6 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Pmmm space group. Sr(1) is bonded to one O(4), one O(5), one O(7), one O(8), two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form SrO12 cuboctahedra that share corners with twelve equivalent Sr(1)O12 cuboctahedra, faces with six equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(2)O6 octahedra, faces with two equivalent Sn(1)O6 octahedra, and faces with two equivalent Sn(2)O6 octahedra. The Sr(1)-O(4) bond length is 2.94 Å. The Sr(1)-O(5) bond length is 2.94 Å. The Sr(1)-O(7) bond length is 2.76 Å. The Sr(1)-O(8) bond length is 2.76 Å. Both Sr(1)-O(1) bond lengths are 2.86 Å. Both Sr(1)-O(2) bond lengths are 2.85 Å. Both Sr(1)-O(3) bond lengths are 2.93 Å. Both Sr(1)-O(6) bond lengths are 2.75 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(2), two equivalent O(6), and two equivalent O(8) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Both Fe(1)-O(2) bond lengths are 1.93 Å. Both Fe(1)-O(6) bond lengths are 1.97 Å. Both Fe(1)-O(8) bond lengths are 2.01 Å. In the second Fe site, Fe(2) is bonded to two equivalent O(1), two equivalent O(6), and two equivalent O(7) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Both Fe(2)-O(1) bond lengths are 1.93 Å. Both Fe(2)-O(6) bond lengths are 2.08 Å. Both Fe(2)-O(7) bond lengths are 2.01 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form SnO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Both Sn(1)-O(1) bond lengths are 2.08 Å. Both Sn(1)-O(3) bond lengths are 2.03 Å. Both Sn(1)-O(4) bond lengths are 2.01 Å. In the second Sn site, Sn(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form SnO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, and faces with eight equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Both Sn(2)-O(2) bond lengths are 2.08 Å. Both Sn(2)-O(3) bond lengths are 2.02 Å. Both Sn(2)-O(5) bond lengths are 2.01 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to four equivalent Sr(1), one Fe(2), and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to four equivalent Sr(1), one Fe(1), and one Sn(2) atom. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent Sr(1), one Sn(1), and one Sn(2) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to four equivalent Sr(1) and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded in a distorted linear geometry to four equivalent Sr(1) and two equivalent Sn(2) atoms. In the sixth O site, O(6) is bonded to four equivalent Sr(1), one Fe(1), and one Fe(2) atom to form a mixture of distorted corner, face, and edge-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the seventh O site, O(7) is bonded to four equivalent Sr(1) and two equivalent Fe(2) atoms to form a mixture of distorted corner, face, and edge-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the eighth O site, O(8) is bonded to four equivalent Sr(1) and two equivalent Fe(1) atoms to form a mixture of distorted corner, face, and edge-sharing OSr4Fe2 octahedra. The corner-sharing octahedra are not tilted.