Sr4Fe4PbBi5O18 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(10), two equivalent O(3), two equivalent O(4), and four equivalent O(8) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(9), two equivalent O(3), two equivalent O(4), and four equivalent O(8) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(12), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(11), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(5), and four equivalent O(7) atoms to form FeO6 octahedra that share  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Bi(1)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, faces with two equivalent Bi(4)O12 cuboctahedra, and faces with two equivalent Bi(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the second Fe site, Fe(2) is bonded to one O(2), one O(6), and four equivalent O(7) atoms to form FeO6 octahedra that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Pb(1)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra, faces with two equivalent Bi(4)O12 cuboctahedra, and faces with two equivalent Bi(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the third Fe site, Fe(3) is bonded to one O(3), one O(6), and four equivalent O(8) atoms to form FeO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Bi(3)O6 octahedra, corners with four equivalent Fe(4)O6 octahedra, faces with two equivalent Bi(4)O12 cuboctahedra, and faces with two equivalent Bi(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the fourth Fe site, Fe(4) is bonded to one O(4), one O(5), and four equivalent O(8) atoms to form FeO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra, corners with four equivalent Fe(3)O6 octahedra, faces with two equivalent Bi(4)O12 cuboctahedra, and faces with two equivalent Bi(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. Pb(1) is bonded to one O(10), one O(2), two equivalent O(11), and two equivalent O(12) atoms to form distorted PbO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with four equivalent Pb(1)O6 octahedra, edges with two equivalent Bi(2)O6 octahedra, edges with two equivalent Bi(3)O6 octahedra, and edges with four equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. There are five inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(9), two equivalent O(11), and two equivalent O(12) atoms to form BiO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with four equivalent Bi(1)O6 octahedra, edges with two equivalent Bi(2)O6 octahedra, edges with two equivalent Bi(3)O6 octahedra, and edges with four equivalent Pb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second Bi site, Bi(2) is bonded to one O(12), one O(4), two equivalent O(10), and two equivalent O(9) atoms to form distorted BiO6 octahedra that share  a cornercorner with one Fe(4)O6 octahedra, corners with four equivalent Bi(2)O6 octahedra, edges with two equivalent Pb(1)O6 octahedra, edges with two equivalent Bi(1)O6 octahedra, and edges with four equivalent Bi(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the third Bi site, Bi(3) is bonded to one O(11), one O(3), two equivalent O(10), and two equivalent O(9) atoms to form distorted BiO6 octahedra that share  a cornercorner with one Fe(3)O6 octahedra, corners with four equivalent Bi(3)O6 octahedra, edges with two equivalent Pb(1)O6 octahedra, edges with two equivalent Bi(1)O6 octahedra, and edges with four equivalent Bi(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the fourth Bi site, Bi(4) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form BiO12 cuboctahedra that share corners with four equivalent Bi(4)O12 cuboctahedra, faces with four equivalent Bi(5)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(2)O6 octahedra, faces with two equivalent Fe(3)O6 octahedra, and faces with two equivalent Fe(4)O6 octahedra. In the fifth Bi site, Bi(5) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form distorted BiO12 cuboctahedra that share corners with four equivalent Bi(5)O12 cuboctahedra, faces with four equivalent Bi(4)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(2)O6 octahedra, faces with two equivalent Fe(3)O6 octahedra, and faces with two equivalent Fe(4)O6 octahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(3), two equivalent Sr(4), one Fe(1), and one Bi(1) atom to form distorted OSr4FeBi octahedra that share  a cornercorner with one O(9)SrBi5 octahedra, corners with four equivalent O(1)Sr4FeBi octahedra, edges with two equivalent O(11)SrBi3Pb2 octahedra, edges with two equivalent O(12)SrBi3Pb2 octahedra, and edges with four equivalent O(2)Sr4FePb octahedra. The corner-sharing octahedral tilt angles range from 0-20°. In the second O site, O(2) is bonded to two equivalent Sr(3), two equivalent Sr(4), one Fe(2), and one Pb(1) atom to form distorted OSr4FePb octahedra that share  a cornercorner with one O(10)SrBi4Pb octahedra, corners with four equivalent O(2)Sr4FePb octahedra, edges with two equivalent O(11)SrBi3Pb2 octahedra, edges with two equivalent O(12)SrBi3Pb2 octahedra, and edges with four equivalent O(1)Sr4FeBi octahedra. The corner-sharing octahedral tilt angles range from 0-14°. In the third O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Fe(3), and one Bi(3) atom to form distorted OSr4FeBi octahedra that share  a cornercorner with one O(11)SrBi3Pb2 octahedra, corners with four equivalent O(3)Sr4FeBi octahedra, edges with two equivalent O(10)SrBi4Pb octahedra, edges with two equivalent O(9)SrBi5 octahedra, and edges with four equivalent O(4)Sr4FeBi octahedra. The corner-sharing octahedral tilt angles range from 0-22°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Fe(4), and one Bi(2) atom to form distorted OSr4FeBi octahedra that share  a cornercorner with one O(12)SrBi3Pb2 octahedra, corners with four equivalent O(4)Sr4FeBi octahedra, edges with two equivalent O(10)SrBi4Pb octahedra, edges with two equivalent O(9)SrBi5 octahedra, and edges with four equivalent O(3)Sr4FeBi octahedra. The corner-sharing octahedral tilt angles range from 0-22°. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Fe(1), one Fe(4), two equivalent Bi(4), and two equivalent Bi(5) atoms. In the sixth O site, O(6) is bonded in a distorted linear geometry to one Fe(2), one Fe(3), two equivalent Bi(4), and two equivalent Bi(5) atoms. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), one Fe(1), one Fe(2), one Bi(4), and one Bi(5) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Fe(3), one Fe(4), one Bi(4), and one Bi(5) atom. In the ninth O site, O(9) is bonded to one Sr(2), one Bi(1), two equivalent Bi(2), and two equivalent Bi(3) atoms to form OSrBi5 octahedra that share  a cornercorner with one O(1)Sr4FeBi octahedra, corners with four equivalent O(9)SrBi5 octahedra, edges with two equivalent O(3)Sr4FeBi octahedra, edges with two equivalent O(4)Sr4FeBi octahedra, edges with two equivalent O(11)SrBi3Pb2 octahedra, edges with two equivalent O(12)SrBi3Pb2 octahedra, and edges with four equivalent O(10)SrBi4Pb octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the tenth O site, O(10) is bonded to one Sr(1), one Pb(1), two equivalent Bi(2), and two equivalent Bi(3) atoms to form distorted OSrBi4Pb octahedra that share  a cornercorner with one O(2)Sr4FePb octahedra, corners with four equivalent O(10)SrBi4Pb octahedra, edges with two equivalent O(3)Sr4FeBi octahedra, edges with two equivalent O(4)Sr4FeBi octahedra, edges with two equivalent O(11)SrBi3Pb2 octahedra, edges with two equivalent O(12)SrBi3Pb2 octahedra, and edges with four equivalent O(9)SrBi5 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the eleventh O site, O(11) is bonded to one Sr(4), two equivalent Pb(1), one Bi(3), and two equivalent Bi(1) atoms to form OSrBi3Pb2 octahedra that share  a cornercorner with one O(3)Sr4FeBi octahedra, corners with four equivalent O(11)SrBi3Pb2 octahedra, edges with two equivalent O(1)Sr4FeBi octahedra, edges with two equivalent O(2)Sr4FePb octahedra, edges with two equivalent O(10)SrBi4Pb octahedra, edges with two equivalent O(9)SrBi5 octahedra, and edges with four equivalent O(12)SrBi3Pb2 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the twelfth O site, O(12) is bonded to one Sr(3), two equivalent Pb(1), one Bi(2), and two equivalent Bi(1) atoms to form OSrBi3Pb2 octahedra that share  a cornercorner with one O(4)Sr4FeBi octahedra, corners with four equivalent O(12)SrBi3Pb2 octahedra, edges with two equivalent O(1)Sr4FeBi octahedra, edges with two equivalent O(2)Sr4FePb octahedra, edges with two equivalent O(10)SrBi4Pb octahedra, edges with two equivalent O(9)SrBi5 octahedra, and edges with four equivalent O(11)SrBi3Pb2 octahedra. The corner-sharing octahedral tilt angles range from 0-3°.
Sr4Fe4PbBi5O18 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(10), two equivalent O(3), two equivalent O(4), and four equivalent O(8) atoms. The Sr(1)-O(10) bond length is 2.59 Å. Both Sr(1)-O(3) bond lengths are 2.79 Å. Both Sr(1)-O(4) bond lengths are 2.79 Å. All Sr(1)-O(8) bond lengths are 2.61 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(9), two equivalent O(3), two equivalent O(4), and four equivalent O(8) atoms. The Sr(2)-O(9) bond length is 2.65 Å. Both Sr(2)-O(3) bond lengths are 2.79 Å. Both Sr(2)-O(4) bond lengths are 2.78 Å. All Sr(2)-O(8) bond lengths are 2.61 Å. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(12), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. The Sr(3)-O(12) bond length is 2.57 Å. Both Sr(3)-O(1) bond lengths are 2.78 Å. Both Sr(3)-O(2) bond lengths are 2.76 Å. All Sr(3)-O(7) bond lengths are 2.68 Å. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(11), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. The Sr(4)-O(11) bond length is 2.56 Å. Both Sr(4)-O(1) bond lengths are 2.78 Å. Both Sr(4)-O(2) bond lengths are 2.76 Å. All Sr(4)-O(7) bond lengths are 2.68 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(5), and four equivalent O(7) atoms to form FeO6 octahedra that share  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Bi(1)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, faces with two equivalent Bi(4)O12 cuboctahedra, and faces with two equivalent Bi(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. The Fe(1)-O(1) bond length is 2.31 Å. The Fe(1)-O(5) bond length is 1.99 Å. All Fe(1)-O(7) bond lengths are 1.93 Å. In the second Fe site, Fe(2) is bonded to one O(2), one O(6), and four equivalent O(7) atoms to form FeO6 octahedra that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Pb(1)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra, faces with two equivalent Bi(4)O12 cuboctahedra, and faces with two equivalent Bi(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. The Fe(2)-O(2) bond length is 2.06 Å. The Fe(2)-O(6) bond length is 2.05 Å. All Fe(2)-O(7) bond lengths are 1.95 Å. In the third Fe site, Fe(3) is bonded to one O(3), one O(6), and four equivalent O(8) atoms to form FeO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Bi(3)O6 octahedra, corners with four equivalent Fe(4)O6 octahedra, faces with two equivalent Bi(4)O12 cuboctahedra, and faces with two equivalent Bi(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. The Fe(3)-O(3) bond length is 2.35 Å. The Fe(3)-O(6) bond length is 1.98 Å. All Fe(3)-O(8) bond lengths are 1.94 Å. In the fourth Fe site, Fe(4) is bonded to one O(4), one O(5), and four equivalent O(8) atoms to form FeO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra, corners with four equivalent Fe(3)O6 octahedra, faces with two equivalent Bi(4)O12 cuboctahedra, and faces with two equivalent Bi(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. The Fe(4)-O(4) bond length is 2.31 Å. The Fe(4)-O(5) bond length is 1.98 Å. All Fe(4)-O(8) bond lengths are 1.94 Å. Pb(1) is bonded to one O(10), one O(2), two equivalent O(11), and two equivalent O(12) atoms to form distorted PbO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with four equivalent Pb(1)O6 octahedra, edges with two equivalent Bi(2)O6 octahedra, edges with two equivalent Bi(3)O6 octahedra, and edges with four equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. The Pb(1)-O(10) bond length is 2.82 Å. The Pb(1)-O(2) bond length is 2.32 Å. Both Pb(1)-O(11) bond lengths are 2.74 Å. Both Pb(1)-O(12) bond lengths are 2.74 Å. There are five inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(9), two equivalent O(11), and two equivalent O(12) atoms to form BiO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with four equivalent Bi(1)O6 octahedra, edges with two equivalent Bi(2)O6 octahedra, edges with two equivalent Bi(3)O6 octahedra, and edges with four equivalent Pb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. The Bi(1)-O(1) bond length is 2.17 Å. The Bi(1)-O(9) bond length is 2.75 Å. Both Bi(1)-O(11) bond lengths are 2.74 Å. Both Bi(1)-O(12) bond lengths are 2.74 Å. In the second Bi site, Bi(2) is bonded to one O(12), one O(4), two equivalent O(10), and two equivalent O(9) atoms to form distorted BiO6 octahedra that share  a cornercorner with one Fe(4)O6 octahedra, corners with four equivalent Bi(2)O6 octahedra, edges with two equivalent Pb(1)O6 octahedra, edges with two equivalent Bi(1)O6 octahedra, and edges with four equivalent Bi(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. The Bi(2)-O(12) bond length is 2.81 Å. The Bi(2)-O(4) bond length is 2.15 Å. Both Bi(2)-O(10) bond lengths are 2.74 Å. Both Bi(2)-O(9) bond lengths are 2.74 Å. In the third Bi site, Bi(3) is bonded to one O(11), one O(3), two equivalent O(10), and two equivalent O(9) atoms to form distorted BiO6 octahedra that share  a cornercorner with one Fe(3)O6 octahedra, corners with four equivalent Bi(3)O6 octahedra, edges with two equivalent Pb(1)O6 octahedra, edges with two equivalent Bi(1)O6 octahedra, and edges with four equivalent Bi(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. The Bi(3)-O(11) bond length is 2.81 Å. The Bi(3)-O(3) bond length is 2.14 Å. Both Bi(3)-O(10) bond lengths are 2.74 Å. Both Bi(3)-O(9) bond lengths are 2.74 Å. In the fourth Bi site, Bi(4) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form BiO12 cuboctahedra that share corners with four equivalent Bi(4)O12 cuboctahedra, faces with four equivalent Bi(5)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(2)O6 octahedra, faces with two equivalent Fe(3)O6 octahedra, and faces with two equivalent Fe(4)O6 octahedra. Both Bi(4)-O(5) bond lengths are 2.74 Å. Both Bi(4)-O(6) bond lengths are 2.74 Å. All Bi(4)-O(7) bond lengths are 2.74 Å. All Bi(4)-O(8) bond lengths are 2.82 Å. In the fifth Bi site, Bi(5) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form distorted BiO12 cuboctahedra that share corners with four equivalent Bi(5)O12 cuboctahedra, faces with four equivalent Bi(4)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(2)O6 octahedra, faces with two equivalent Fe(3)O6 octahedra, and faces with two equivalent Fe(4)O6 octahedra. Both Bi(5)-O(5) bond lengths are 2.74 Å. Both Bi(5)-O(6) bond lengths are 2.74 Å. All Bi(5)-O(7) bond lengths are 2.69 Å. All Bi(5)-O(8) bond lengths are 2.87 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(3), two equivalent Sr(4), one Fe(1), and one Bi(1) atom to form distorted OSr4FeBi octahedra that share  a cornercorner with one O(9)SrBi5 octahedra, corners with four equivalent O(1)Sr4FeBi octahedra, edges with two equivalent O(11)SrBi3Pb2 octahedra, edges with two equivalent O(12)SrBi3Pb2 octahedra, and edges with four equivalent O(2)Sr4FePb octahedra. The corner-sharing octahedral tilt angles range from 0-20°. In the second O site, O(2) is bonded to two equivalent Sr(3), two equivalent Sr(4), one Fe(2), and one Pb(1) atom to form distorted OSr4FePb octahedra that share  a cornercorner with one O(10)SrBi4Pb octahedra, corners with four equivalent O(2)Sr4FePb octahedra, edges with two equivalent O(11)SrBi3Pb2 octahedra, edges with two equivalent O(12)SrBi3Pb2 octahedra, and edges with four equivalent O(1)Sr4FeBi octahedra. The corner-sharing octahedral tilt angles range from 0-14°. In the third O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Fe(3), and one Bi(3) atom to form distorted OSr4FeBi octahedra that share  a cornercorner with one O(11)SrBi3Pb2 octahedra, corners with four equivalent O(3)Sr4FeBi octahedra, edges with two equivalent O(10)SrBi4Pb octahedra, edges with two equivalent O(9)SrBi5 octahedra, and edges with four equivalent O(4)Sr4FeBi octahedra. The corner-sharing octahedral tilt angles range from 0-22°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Fe(4), and one Bi(2) atom to form distorted OSr4FeBi octahedra that share  a cornercorner with one O(12)SrBi3Pb2 octahedra, corners with four equivalent O(4)Sr4FeBi octahedra, edges with two equivalent O(10)SrBi4Pb octahedra, edges with two equivalent O(9)SrBi5 octahedra, and edges with four equivalent O(3)Sr4FeBi octahedra. The corner-sharing octahedral tilt angles range from 0-22°. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Fe(1), one Fe(4), two equivalent Bi(4), and two equivalent Bi(5) atoms. In the sixth O site, O(6) is bonded in a distorted linear geometry to one Fe(2), one Fe(3), two equivalent Bi(4), and two equivalent Bi(5) atoms. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), one Fe(1), one Fe(2), one Bi(4), and one Bi(5) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Fe(3), one Fe(4), one Bi(4), and one Bi(5) atom. In the ninth O site, O(9) is bonded to one Sr(2), one Bi(1), two equivalent Bi(2), and two equivalent Bi(3) atoms to form OSrBi5 octahedra that share  a cornercorner with one O(1)Sr4FeBi octahedra, corners with four equivalent O(9)SrBi5 octahedra, edges with two equivalent O(3)Sr4FeBi octahedra, edges with two equivalent O(4)Sr4FeBi octahedra, edges with two equivalent O(11)SrBi3Pb2 octahedra, edges with two equivalent O(12)SrBi3Pb2 octahedra, and edges with four equivalent O(10)SrBi4Pb octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the tenth O site, O(10) is bonded to one Sr(1), one Pb(1), two equivalent Bi(2), and two equivalent Bi(3) atoms to form distorted OSrBi4Pb octahedra that share  a cornercorner with one O(2)Sr4FePb octahedra, corners with four equivalent O(10)SrBi4Pb octahedra, edges with two equivalent O(3)Sr4FeBi octahedra, edges with two equivalent O(4)Sr4FeBi octahedra, edges with two equivalent O(11)SrBi3Pb2 octahedra, edges with two equivalent O(12)SrBi3Pb2 octahedra, and edges with four equivalent O(9)SrBi5 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the eleventh O site, O(11) is bonded to one Sr(4), two equivalent Pb(1), one Bi(3), and two equivalent Bi(1) atoms to form OSrBi3Pb2 octahedra that share  a cornercorner with one O(3)Sr4FeBi octahedra, corners with four equivalent O(11)SrBi3Pb2 octahedra, edges with two equivalent O(1)Sr4FeBi octahedra, edges with two equivalent O(2)Sr4FePb octahedra, edges with two equivalent O(10)SrBi4Pb octahedra, edges with two equivalent O(9)SrBi5 octahedra, and edges with four equivalent O(12)SrBi3Pb2 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the twelfth O site, O(12) is bonded to one Sr(3), two equivalent Pb(1), one Bi(2), and two equivalent Bi(1) atoms to form OSrBi3Pb2 octahedra that share  a cornercorner with one O(4)Sr4FeBi octahedra, corners with four equivalent O(12)SrBi3Pb2 octahedra, edges with two equivalent O(1)Sr4FeBi octahedra, edges with two equivalent O(2)Sr4FePb octahedra, edges with two equivalent O(10)SrBi4Pb octahedra, edges with two equivalent O(9)SrBi5 octahedra, and edges with four equivalent O(11)SrBi3Pb2 octahedra. The corner-sharing octahedral tilt angles range from 0-3°.