Sr2SnFeO6 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Fmm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(3), one O(4), two equivalent O(1), two equivalent O(11), two equivalent O(6), two equivalent O(8), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(1)O12 cuboctahedra, corners with two equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Fe(3)O6 octahedra,  a faceface with one Fe(4)O6 octahedra, and faces with four equivalent Sn(1)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(3), one O(4), two equivalent O(10), two equivalent O(12), two equivalent O(2), two equivalent O(5), and two equivalent O(7) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(1)O12 cuboctahedra, corners with two equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Fe(3)O6 octahedra,  a faceface with one Fe(4)O6 octahedra, and faces with four equivalent Sn(2)O6 octahedra. In the third Sr site, Sr(3) is bonded to one O(1), one O(2), two equivalent O(11), two equivalent O(3), two equivalent O(5), two equivalent O(7), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(3)O12 cuboctahedra, corners with two equivalent Sr(4)O12 cuboctahedra, corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(3)O6 octahedra, faces with two equivalent Sn(1)O6 octahedra, and faces with two equivalent Sn(2)O6 octahedra. In the fourth Sr site, Sr(4) is bonded to one O(1), one O(2), two equivalent O(10), two equivalent O(12), two equivalent O(4), two equivalent O(6), and two equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(3)O12 cuboctahedra, corners with two equivalent Sr(4)O12 cuboctahedra, corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Fe(2)O6 octahedra, faces with two equivalent Fe(4)O6 octahedra, faces with two equivalent Sn(1)O6 octahedra, and faces with two equivalent Sn(2)O6 octahedra. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(11), two equivalent O(3), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with four equivalent Sr(3)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Fe site, Fe(2) is bonded to two equivalent O(12), two equivalent O(4), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent Fe(4)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with four equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the third Fe site, Fe(3) is bonded to two equivalent O(3), two equivalent O(7), and two equivalent O(9) atoms to form FeO6 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, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with four equivalent Sr(3)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the fourth Fe site, Fe(4) is bonded to two equivalent O(10), two equivalent O(4), and two equivalent O(8) atoms to form FeO6 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, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with four equivalent Sr(4)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 one O(11), one O(6), one O(8), one O(9), and two equivalent O(1) atoms to form SnO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Sn site, Sn(2) is bonded to one O(10), one O(12), one O(5), one O(7), and two equivalent O(2) atoms to form SnO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Sr(3), one Sr(4), two equivalent Sr(1), and two equivalent Sn(1) atoms to form distorted OSr4Sn2 octahedra that share corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with four equivalent O(1)Sr4Sn2 octahedra, edges with two equivalent O(3)Sr4Fe2 octahedra, edges with two equivalent O(4)Sr4Fe2 octahedra, faces with two equivalent O(11)Sr4FeSn octahedra, faces with two equivalent O(8)Sr4FeSn octahedra, and faces with two equivalent O(9)Sr4FeSn octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the second O site, O(2) is bonded to one Sr(3), one Sr(4), two equivalent Sr(2), and two equivalent Sn(2) atoms to form distorted OSr4Sn2 octahedra that share corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with four equivalent O(2)Sr4Sn2 octahedra, edges with two equivalent O(3)Sr4Fe2 octahedra, edges with two equivalent O(4)Sr4Fe2 octahedra, faces with two equivalent O(10)Sr4FeSn octahedra, faces with two equivalent O(12)Sr4FeSn octahedra, faces with two equivalent O(5)Sr4FeSn octahedra, and faces with two equivalent O(7)Sr4FeSn octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), two equivalent Sr(3), one Fe(1), and one Fe(3) atom to form distorted OSr4Fe2 octahedra that share corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with four equivalent O(3)Sr4Fe2 octahedra, edges with two equivalent O(1)Sr4Sn2 octahedra, edges with two equivalent O(2)Sr4Sn2 octahedra, faces with two equivalent O(11)Sr4FeSn octahedra, faces with two equivalent O(5)Sr4FeSn octahedra, faces with two equivalent O(7)Sr4FeSn octahedra, and faces with two equivalent O(9)Sr4FeSn octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(2), two equivalent Sr(4), one Fe(2), and one Fe(4) atom to form distorted OSr4Fe2 octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with four equivalent O(4)Sr4Fe2 octahedra, edges with two equivalent O(1)Sr4Sn2 octahedra, edges with two equivalent O(2)Sr4Sn2 octahedra, faces with two equivalent O(10)Sr4FeSn octahedra, faces with two equivalent O(12)Sr4FeSn octahedra, and faces with two equivalent O(8)Sr4FeSn octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the fifth O site, O(5) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Fe(1), and one Sn(2) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(11)Sr4FeSn octahedra, corners with five equivalent O(10)Sr4FeSn octahedra,  an edgeedge with one O(12)Sr4FeSn octahedra,  an edgeedge with one O(9)Sr4FeSn octahedra, edges with two equivalent O(7)Sr4FeSn octahedra,  a faceface with one O(11)Sr4FeSn octahedra,  a faceface with one O(12)Sr4FeSn octahedra,  a faceface with one O(5)Sr4FeSn octahedra,  a faceface with one O(7)Sr4FeSn octahedra, faces with two equivalent O(3)Sr4Fe2 octahedra, and faces with two equivalent O(2)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the sixth O site, O(6) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(4), one Fe(2), and one Sn(1) atom. In the seventh O site, O(7) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Fe(3), and one Sn(2) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(9)Sr4FeSn octahedra, corners with five equivalent O(12)Sr4FeSn octahedra,  an edgeedge with one O(10)Sr4FeSn octahedra,  an edgeedge with one O(11)Sr4FeSn octahedra, edges with two equivalent O(5)Sr4FeSn octahedra,  a faceface with one O(10)Sr4FeSn octahedra,  a faceface with one O(5)Sr4FeSn octahedra,  a faceface with one O(7)Sr4FeSn octahedra,  a faceface with one O(9)Sr4FeSn octahedra, faces with two equivalent O(3)Sr4Fe2 octahedra, and faces with two equivalent O(2)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the eighth O site, O(8) is bonded to two equivalent Sr(1), two equivalent Sr(4), one Fe(4), and one Sn(1) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(10)Sr4FeSn octahedra, corners with five equivalent O(9)Sr4FeSn octahedra,  an edgeedge with one O(11)Sr4FeSn octahedra,  an edgeedge with one O(12)Sr4FeSn octahedra,  a faceface with one O(10)Sr4FeSn octahedra,  a faceface with one O(11)Sr4FeSn octahedra,  a faceface with one O(8)Sr4FeSn octahedra, faces with two equivalent O(4)Sr4Fe2 octahedra, and faces with two equivalent O(1)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the ninth O site, O(9) is bonded to two equivalent Sr(1), two equivalent Sr(3), one Fe(3), and one Sn(1) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(7)Sr4FeSn octahedra, corners with five equivalent O(8)Sr4FeSn octahedra,  an edgeedge with one O(5)Sr4FeSn octahedra, edges with two equivalent O(11)Sr4FeSn octahedra,  a faceface with one O(11)Sr4FeSn octahedra,  a faceface with one O(7)Sr4FeSn octahedra,  a faceface with one O(9)Sr4FeSn octahedra, faces with two equivalent O(3)Sr4Fe2 octahedra, and faces with two equivalent O(1)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the tenth O site, O(10) is bonded to two equivalent Sr(2), two equivalent Sr(4), one Fe(4), and one Sn(2) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(8)Sr4FeSn octahedra, corners with five equivalent O(5)Sr4FeSn octahedra,  an edgeedge with one O(7)Sr4FeSn octahedra, edges with two equivalent O(12)Sr4FeSn octahedra,  a faceface with one O(10)Sr4FeSn octahedra,  a faceface with one O(12)Sr4FeSn octahedra,  a faceface with one O(7)Sr4FeSn octahedra,  a faceface with one O(8)Sr4FeSn octahedra, faces with two equivalent O(4)Sr4Fe2 octahedra, and faces with two equivalent O(2)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the eleventh O site, O(11) is bonded to two equivalent Sr(1), two equivalent Sr(3), one Fe(1), and one Sn(1) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(5)Sr4FeSn octahedra,  an edgeedge with one O(7)Sr4FeSn octahedra,  an edgeedge with one O(8)Sr4FeSn octahedra, edges with two equivalent O(9)Sr4FeSn octahedra,  a faceface with one O(11)Sr4FeSn octahedra,  a faceface with one O(5)Sr4FeSn octahedra,  a faceface with one O(8)Sr4FeSn octahedra,  a faceface with one O(9)Sr4FeSn octahedra, faces with two equivalent O(3)Sr4Fe2 octahedra, and faces with two equivalent O(1)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the twelfth O site, O(12) is bonded to two equivalent Sr(2), two equivalent Sr(4), one Fe(2), and one Sn(2) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with five equivalent O(7)Sr4FeSn octahedra,  an edgeedge with one O(5)Sr4FeSn octahedra,  an edgeedge with one O(8)Sr4FeSn octahedra, edges with two equivalent O(10)Sr4FeSn octahedra,  a faceface with one O(10)Sr4FeSn octahedra,  a faceface with one O(12)Sr4FeSn octahedra,  a faceface with one O(5)Sr4FeSn octahedra, faces with two equivalent O(4)Sr4Fe2 octahedra, and faces with two equivalent O(2)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°.
Sr2SnFeO6 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Fmm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(3), one O(4), two equivalent O(1), two equivalent O(11), two equivalent O(6), two equivalent O(8), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(1)O12 cuboctahedra, corners with two equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Fe(3)O6 octahedra,  a faceface with one Fe(4)O6 octahedra, and faces with four equivalent Sn(1)O6 octahedra. The Sr(1)-O(3) bond length is 2.84 Å. The Sr(1)-O(4) bond length is 2.86 Å. Both Sr(1)-O(1) bond lengths are 2.86 Å. Both Sr(1)-O(11) bond lengths are 2.86 Å. Both Sr(1)-O(6) bond lengths are 2.87 Å. Both Sr(1)-O(8) bond lengths are 2.87 Å. Both Sr(1)-O(9) bond lengths are 2.86 Å. In the second Sr site, Sr(2) is bonded to one O(3), one O(4), two equivalent O(10), two equivalent O(12), two equivalent O(2), two equivalent O(5), and two equivalent O(7) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(1)O12 cuboctahedra, corners with two equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Fe(3)O6 octahedra,  a faceface with one Fe(4)O6 octahedra, and faces with four equivalent Sn(2)O6 octahedra. The Sr(2)-O(3) bond length is 2.84 Å. The Sr(2)-O(4) bond length is 2.86 Å. Both Sr(2)-O(10) bond lengths are 2.87 Å. Both Sr(2)-O(12) bond lengths are 2.86 Å. Both Sr(2)-O(2) bond lengths are 2.86 Å. Both Sr(2)-O(5) bond lengths are 2.85 Å. Both Sr(2)-O(7) bond lengths are 2.86 Å. In the third Sr site, Sr(3) is bonded to one O(1), one O(2), two equivalent O(11), two equivalent O(3), two equivalent O(5), two equivalent O(7), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(3)O12 cuboctahedra, corners with two equivalent Sr(4)O12 cuboctahedra, corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(3)O6 octahedra, faces with two equivalent Sn(1)O6 octahedra, and faces with two equivalent Sn(2)O6 octahedra. The Sr(3)-O(1) bond length is 2.85 Å. The Sr(3)-O(2) bond length is 2.85 Å. Both Sr(3)-O(11) bond lengths are 2.86 Å. Both Sr(3)-O(3) bond lengths are 2.86 Å. Both Sr(3)-O(5) bond lengths are 2.87 Å. Both Sr(3)-O(7) bond lengths are 2.86 Å. Both Sr(3)-O(9) bond lengths are 2.86 Å. In the fourth Sr site, Sr(4) is bonded to one O(1), one O(2), two equivalent O(10), two equivalent O(12), two equivalent O(4), two equivalent O(6), and two equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(3)O12 cuboctahedra, corners with two equivalent Sr(4)O12 cuboctahedra, corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Fe(2)O6 octahedra, faces with two equivalent Fe(4)O6 octahedra, faces with two equivalent Sn(1)O6 octahedra, and faces with two equivalent Sn(2)O6 octahedra. The Sr(4)-O(1) bond length is 2.85 Å. The Sr(4)-O(2) bond length is 2.85 Å. Both Sr(4)-O(10) bond lengths are 2.86 Å. Both Sr(4)-O(12) bond lengths are 2.87 Å. Both Sr(4)-O(4) bond lengths are 2.86 Å. Both Sr(4)-O(6) bond lengths are 2.86 Å. Both Sr(4)-O(8) bond lengths are 2.86 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(11), two equivalent O(3), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with two equivalent Fe(3)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with four equivalent Sr(3)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Both Fe(1)-O(11) bond lengths are 1.97 Å. Both Fe(1)-O(3) bond lengths are 1.98 Å. Both Fe(1)-O(5) bond lengths are 1.98 Å. In the second Fe site, Fe(2) is bonded to two equivalent O(12), two equivalent O(4), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent Fe(4)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with four equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Both Fe(2)-O(12) bond lengths are 1.98 Å. Both Fe(2)-O(4) bond lengths are 1.98 Å. Both Fe(2)-O(6) bond lengths are 1.97 Å. In the third Fe site, Fe(3) is bonded to two equivalent O(3), two equivalent O(7), and two equivalent O(9) atoms to form FeO6 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, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with four equivalent Sr(3)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Both Fe(3)-O(3) bond lengths are 2.09 Å. Both Fe(3)-O(7) bond lengths are 1.99 Å. Both Fe(3)-O(9) bond lengths are 1.99 Å. In the fourth Fe site, Fe(4) is bonded to two equivalent O(10), two equivalent O(4), and two equivalent O(8) atoms to form FeO6 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, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with four equivalent Sr(4)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Both Fe(4)-O(10) bond lengths are 1.99 Å. Both Fe(4)-O(4) bond lengths are 2.09 Å. Both Fe(4)-O(8) bond lengths are 1.99 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(11), one O(6), one O(8), one O(9), and two equivalent O(1) atoms to form SnO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Sn(1)O6 octahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. The Sn(1)-O(11) bond length is 2.06 Å. The Sn(1)-O(6) bond length is 2.06 Å. The Sn(1)-O(8) bond length is 2.04 Å. The Sn(1)-O(9) bond length is 2.05 Å. Both Sn(1)-O(1) bond lengths are 2.03 Å. In the second Sn site, Sn(2) is bonded to one O(10), one O(12), one O(5), one O(7), and two equivalent O(2) atoms to form SnO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. The Sn(2)-O(10) bond length is 2.05 Å. The Sn(2)-O(12) bond length is 2.06 Å. The Sn(2)-O(5) bond length is 2.06 Å. The Sn(2)-O(7) bond length is 2.05 Å. Both Sn(2)-O(2) bond lengths are 2.03 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Sr(3), one Sr(4), two equivalent Sr(1), and two equivalent Sn(1) atoms to form distorted OSr4Sn2 octahedra that share corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with four equivalent O(1)Sr4Sn2 octahedra, edges with two equivalent O(3)Sr4Fe2 octahedra, edges with two equivalent O(4)Sr4Fe2 octahedra, faces with two equivalent O(11)Sr4FeSn octahedra, faces with two equivalent O(8)Sr4FeSn octahedra, and faces with two equivalent O(9)Sr4FeSn octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the second O site, O(2) is bonded to one Sr(3), one Sr(4), two equivalent Sr(2), and two equivalent Sn(2) atoms to form distorted OSr4Sn2 octahedra that share corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with four equivalent O(2)Sr4Sn2 octahedra, edges with two equivalent O(3)Sr4Fe2 octahedra, edges with two equivalent O(4)Sr4Fe2 octahedra, faces with two equivalent O(10)Sr4FeSn octahedra, faces with two equivalent O(12)Sr4FeSn octahedra, faces with two equivalent O(5)Sr4FeSn octahedra, and faces with two equivalent O(7)Sr4FeSn octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), two equivalent Sr(3), one Fe(1), and one Fe(3) atom to form distorted OSr4Fe2 octahedra that share corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with four equivalent O(3)Sr4Fe2 octahedra, edges with two equivalent O(1)Sr4Sn2 octahedra, edges with two equivalent O(2)Sr4Sn2 octahedra, faces with two equivalent O(11)Sr4FeSn octahedra, faces with two equivalent O(5)Sr4FeSn octahedra, faces with two equivalent O(7)Sr4FeSn octahedra, and faces with two equivalent O(9)Sr4FeSn octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(2), two equivalent Sr(4), one Fe(2), and one Fe(4) atom to form distorted OSr4Fe2 octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with four equivalent O(4)Sr4Fe2 octahedra, edges with two equivalent O(1)Sr4Sn2 octahedra, edges with two equivalent O(2)Sr4Sn2 octahedra, faces with two equivalent O(10)Sr4FeSn octahedra, faces with two equivalent O(12)Sr4FeSn octahedra, and faces with two equivalent O(8)Sr4FeSn octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the fifth O site, O(5) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Fe(1), and one Sn(2) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(11)Sr4FeSn octahedra, corners with five equivalent O(10)Sr4FeSn octahedra,  an edgeedge with one O(12)Sr4FeSn octahedra,  an edgeedge with one O(9)Sr4FeSn octahedra, edges with two equivalent O(7)Sr4FeSn octahedra,  a faceface with one O(11)Sr4FeSn octahedra,  a faceface with one O(12)Sr4FeSn octahedra,  a faceface with one O(5)Sr4FeSn octahedra,  a faceface with one O(7)Sr4FeSn octahedra, faces with two equivalent O(3)Sr4Fe2 octahedra, and faces with two equivalent O(2)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the sixth O site, O(6) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(4), one Fe(2), and one Sn(1) atom. In the seventh O site, O(7) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Fe(3), and one Sn(2) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(9)Sr4FeSn octahedra, corners with five equivalent O(12)Sr4FeSn octahedra,  an edgeedge with one O(10)Sr4FeSn octahedra,  an edgeedge with one O(11)Sr4FeSn octahedra, edges with two equivalent O(5)Sr4FeSn octahedra,  a faceface with one O(10)Sr4FeSn octahedra,  a faceface with one O(5)Sr4FeSn octahedra,  a faceface with one O(7)Sr4FeSn octahedra,  a faceface with one O(9)Sr4FeSn octahedra, faces with two equivalent O(3)Sr4Fe2 octahedra, and faces with two equivalent O(2)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the eighth O site, O(8) is bonded to two equivalent Sr(1), two equivalent Sr(4), one Fe(4), and one Sn(1) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(10)Sr4FeSn octahedra, corners with five equivalent O(9)Sr4FeSn octahedra,  an edgeedge with one O(11)Sr4FeSn octahedra,  an edgeedge with one O(12)Sr4FeSn octahedra,  a faceface with one O(10)Sr4FeSn octahedra,  a faceface with one O(11)Sr4FeSn octahedra,  a faceface with one O(8)Sr4FeSn octahedra, faces with two equivalent O(4)Sr4Fe2 octahedra, and faces with two equivalent O(1)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the ninth O site, O(9) is bonded to two equivalent Sr(1), two equivalent Sr(3), one Fe(3), and one Sn(1) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(5)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(7)Sr4FeSn octahedra, corners with five equivalent O(8)Sr4FeSn octahedra,  an edgeedge with one O(5)Sr4FeSn octahedra, edges with two equivalent O(11)Sr4FeSn octahedra,  a faceface with one O(11)Sr4FeSn octahedra,  a faceface with one O(7)Sr4FeSn octahedra,  a faceface with one O(9)Sr4FeSn octahedra, faces with two equivalent O(3)Sr4Fe2 octahedra, and faces with two equivalent O(1)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the tenth O site, O(10) is bonded to two equivalent Sr(2), two equivalent Sr(4), one Fe(4), and one Sn(2) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(8)Sr4FeSn octahedra, corners with five equivalent O(5)Sr4FeSn octahedra,  an edgeedge with one O(7)Sr4FeSn octahedra, edges with two equivalent O(12)Sr4FeSn octahedra,  a faceface with one O(10)Sr4FeSn octahedra,  a faceface with one O(12)Sr4FeSn octahedra,  a faceface with one O(7)Sr4FeSn octahedra,  a faceface with one O(8)Sr4FeSn octahedra, faces with two equivalent O(4)Sr4Fe2 octahedra, and faces with two equivalent O(2)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the eleventh O site, O(11) is bonded to two equivalent Sr(1), two equivalent Sr(3), one Fe(1), and one Sn(1) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(11)Sr4FeSn octahedra, corners with two equivalent O(7)Sr4FeSn octahedra, corners with two equivalent O(9)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with three equivalent O(5)Sr4FeSn octahedra,  an edgeedge with one O(7)Sr4FeSn octahedra,  an edgeedge with one O(8)Sr4FeSn octahedra, edges with two equivalent O(9)Sr4FeSn octahedra,  a faceface with one O(11)Sr4FeSn octahedra,  a faceface with one O(5)Sr4FeSn octahedra,  a faceface with one O(8)Sr4FeSn octahedra,  a faceface with one O(9)Sr4FeSn octahedra, faces with two equivalent O(3)Sr4Fe2 octahedra, and faces with two equivalent O(1)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the twelfth O site, O(12) is bonded to two equivalent Sr(2), two equivalent Sr(4), one Fe(2), and one Sn(2) atom to form distorted OSr4FeSn octahedra that share corners with two equivalent O(3)Sr4Fe2 octahedra, corners with two equivalent O(4)Sr4Fe2 octahedra, corners with two equivalent O(10)Sr4FeSn octahedra, corners with two equivalent O(12)Sr4FeSn octahedra, corners with two equivalent O(8)Sr4FeSn octahedra, corners with two equivalent O(1)Sr4Sn2 octahedra, corners with two equivalent O(2)Sr4Sn2 octahedra, corners with five equivalent O(7)Sr4FeSn octahedra,  an edgeedge with one O(5)Sr4FeSn octahedra,  an edgeedge with one O(8)Sr4FeSn octahedra, edges with two equivalent O(10)Sr4FeSn octahedra,  a faceface with one O(10)Sr4FeSn octahedra,  a faceface with one O(12)Sr4FeSn octahedra,  a faceface with one O(5)Sr4FeSn octahedra, faces with two equivalent O(4)Sr4Fe2 octahedra, and faces with two equivalent O(2)Sr4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°.