Sr5Fe3F19 crystallizes in the triclinic P1 space group. There are ten inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one F(11), one F(13), one F(24), one F(29), one F(30), one F(34), one F(4), one F(5), and one F(6) atom. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one F(1), one F(10), one F(14), one F(15), one F(2), one F(28), one F(4), one F(5), and one F(8) atom. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to one F(10), one F(17), one F(18), one F(19), one F(20), one F(3), one F(34), and one F(4) atom. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one F(16), one F(17), one F(18), one F(22), one F(25), one F(27), one F(37), one F(38), and one F(9) atom. In the fifth Sr site, Sr(5) is bonded in a 9-coordinate geometry to one F(11), one F(13), one F(16), one F(18), one F(2), one F(24), one F(29), one F(30), and one F(6) atom. In the sixth Sr site, Sr(6) is bonded in a 8-coordinate geometry to one F(12), one F(19), one F(21), one F(23), one F(26), one F(31), one F(7), and one F(8) atom. In the seventh Sr site, Sr(7) is bonded in a 8-coordinate geometry to one F(1), one F(10), one F(14), one F(15), one F(19), one F(20), one F(21), and one F(28) atom. In the eighth Sr site, Sr(8) is bonded in a 9-coordinate geometry to one F(17), one F(18), one F(19), one F(20), one F(23), one F(27), one F(3), one F(33), and one F(34) atom. In the ninth Sr site, Sr(9) is bonded in a 7-coordinate geometry to one F(22), one F(27), one F(32), one F(33), one F(36), one F(37), and one F(9) atom. In the tenth Sr site, Sr(10) is bonded in a 8-coordinate geometry to one F(12), one F(23), one F(26), one F(3), one F(31), one F(32), one F(33), and one F(7) atom. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one F(11), one F(2), one F(25), one F(35), one F(36), and one F(8) atom to form corner-sharing FeF6 octahedra. The corner-sharing octahedral tilt angles range from 44-45°. In the second Fe site, Fe(2) is bonded in an octahedral geometry to one F(1), one F(10), one F(16), one F(3), one F(31), and one F(7) atom. In the third Fe site, Fe(3) is bonded to one F(14), one F(26), one F(29), one F(35), one F(36), and one F(38) atom to form corner-sharing FeF6 octahedra. The corner-sharing octahedral tilt angles range from 44-45°. In the fourth Fe site, Fe(4) is bonded in an octahedral geometry to one F(12), one F(17), one F(22), one F(23), one F(5), and one F(9) atom. In the fifth Fe site, Fe(5) is bonded in an octahedral geometry to one F(13), one F(15), one F(20), one F(24), one F(28), and one F(32) atom. In the sixth Fe site, Fe(6) is bonded in an octahedral geometry to one F(21), one F(27), one F(30), one F(34), one F(37), and one F(6) atom. There are thirty-eight inequivalent F sites. In the first F site, F(1) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(7), and one Fe(2) atom. In the second F site, F(2) is bonded in a distorted trigonal non-coplanar geometry to one Sr(2), one Sr(5), and one Fe(1) atom. In the third F site, F(3) is bonded in a 4-coordinate geometry to one Sr(10), one Sr(3), one Sr(8), and one Fe(2) atom. In the fourth F site, F(4) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), one Sr(2), and one Sr(3) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Sr(1), one Sr(2), and one Fe(4) atom. In the sixth F site, F(6) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(5), and one Fe(6) atom. In the seventh F site, F(7) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(6), and one Fe(2) atom. In the eighth F site, F(8) is bonded in a distorted trigonal non-coplanar geometry to one Sr(2), one Sr(6), and one Fe(1) atom. In the ninth F site, F(9) is bonded in a 3-coordinate geometry to one Sr(4), one Sr(9), and one Fe(4) atom. In the tenth F site, F(10) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(3), one Sr(7), and one Fe(2) atom. In the eleventh F site, F(11) is bonded in a 1-coordinate geometry to one Sr(1), one Sr(5), and one Fe(1) atom. In the twelfth F site, F(12) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(6), and one Fe(4) atom. In the thirteenth F site, F(13) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(5), and one Fe(5) atom. In the fourteenth F site, F(14) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(7), and one Fe(3) atom. In the fifteenth F site, F(15) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(7), and one Fe(5) atom. In the sixteenth F site, F(16) is bonded in a distorted trigonal planar geometry to one Sr(4), one Sr(5), and one Fe(2) atom. In the seventeenth F site, F(17) is bonded to one Sr(3), one Sr(4), one Sr(8), and one Fe(4) atom to form distorted FSr3Fe tetrahedra that share  an edgeedge with one F(20)Sr3Fe tetrahedra,  an edgeedge with one F(19)Sr4 tetrahedra, and  a faceface with one F(18)Sr4 tetrahedra. In the eighteenth F site, F(18) is bonded to one Sr(3), one Sr(4), one Sr(5), and one Sr(8) atom to form distorted FSr4 tetrahedra that share  an edgeedge with one F(20)Sr3Fe tetrahedra,  an edgeedge with one F(19)Sr4 tetrahedra, and  a faceface with one F(17)Sr3Fe tetrahedra. In the nineteenth F site, F(19) is bonded to one Sr(3), one Sr(6), one Sr(7), and one Sr(8) atom to form distorted FSr4 tetrahedra that share  an edgeedge with one F(17)Sr3Fe tetrahedra,  an edgeedge with one F(18)Sr4 tetrahedra, and  a faceface with one F(20)Sr3Fe tetrahedra. In the twentieth F site, F(20) is bonded to one Sr(3), one Sr(7), one Sr(8), and one Fe(5) atom to form distorted FSr3Fe tetrahedra that share  an edgeedge with one F(17)Sr3Fe tetrahedra,  an edgeedge with one F(18)Sr4 tetrahedra, and  a faceface with one F(19)Sr4 tetrahedra. In the twenty-first F site, F(21) is bonded in a distorted trigonal planar geometry to one Sr(6), one Sr(7), and one Fe(6) atom. In the twenty-second F site, F(22) is bonded in a 3-coordinate geometry to one Sr(4), one Sr(9), and one Fe(4) atom. In the twenty-third F site, F(23) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(6), one Sr(8), and one Fe(4) atom. In the twenty-fourth F site, F(24) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(5), and one Fe(5) atom. In the twenty-fifth F site, F(25) is bonded in a 2-coordinate geometry to one Sr(4) and one Fe(1) atom. In the twenty-sixth F site, F(26) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(6), and one Fe(3) atom. In the twenty-seventh F site, F(27) is bonded in a 4-coordinate geometry to one Sr(4), one Sr(8), one Sr(9), and one Fe(6) atom. In the twenty-eighth F site, F(28) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(7), and one Fe(5) atom. In the twenty-ninth F site, F(29) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(5), and one Fe(3) atom. In the thirtieth F site, F(30) is bonded in a distorted bent 150 degrees geometry to one Sr(1), one Sr(5), and one Fe(6) atom. In the thirty-first F site, F(31) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(6), and one Fe(2) atom. In the thirty-second F site, F(32) is bonded in a distorted trigonal planar geometry to one Sr(10), one Sr(9), and one Fe(5) atom. In the thirty-third F site, F(33) is bonded in a distorted trigonal non-coplanar geometry to one Sr(10), one Sr(8), and one Sr(9) atom. In the thirty-fourth F site, F(34) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(3), one Sr(8), and one Fe(6) atom. In the thirty-fifth F site, F(35) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one Fe(3) atom. In the thirty-sixth F site, F(36) is bonded in a distorted trigonal planar geometry to one Sr(9), one Fe(1), and one Fe(3) atom. In the thirty-seventh F site, F(37) is bonded in a 3-coordinate geometry to one Sr(4), one Sr(9), and one Fe(6) atom. In the thirty-eighth F site, F(38) is bonded in a distorted bent 150 degrees geometry to one Sr(4) and one Fe(3) atom.
Sr5Fe3F19 crystallizes in the triclinic P1 space group. There are ten inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one F(11), one F(13), one F(24), one F(29), one F(30), one F(34), one F(4), one F(5), and one F(6) atom. The Sr(1)-F(11) bond length is 2.58 Å. The Sr(1)-F(13) bond length is 2.53 Å. The Sr(1)-F(24) bond length is 2.44 Å. The Sr(1)-F(29) bond length is 2.57 Å. The Sr(1)-F(30) bond length is 2.94 Å. The Sr(1)-F(34) bond length is 2.79 Å. The Sr(1)-F(4) bond length is 2.53 Å. The Sr(1)-F(5) bond length is 2.60 Å. The Sr(1)-F(6) bond length is 2.72 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one F(1), one F(10), one F(14), one F(15), one F(2), one F(28), one F(4), one F(5), and one F(8) atom. The Sr(2)-F(1) bond length is 2.78 Å. The Sr(2)-F(10) bond length is 2.74 Å. The Sr(2)-F(14) bond length is 2.76 Å. The Sr(2)-F(15) bond length is 2.48 Å. The Sr(2)-F(2) bond length is 2.57 Å. The Sr(2)-F(28) bond length is 2.52 Å. The Sr(2)-F(4) bond length is 2.39 Å. The Sr(2)-F(5) bond length is 2.63 Å. The Sr(2)-F(8) bond length is 2.73 Å. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to one F(10), one F(17), one F(18), one F(19), one F(20), one F(3), one F(34), and one F(4) atom. The Sr(3)-F(10) bond length is 3.09 Å. The Sr(3)-F(17) bond length is 2.56 Å. The Sr(3)-F(18) bond length is 2.66 Å. The Sr(3)-F(19) bond length is 2.73 Å. The Sr(3)-F(20) bond length is 2.50 Å. The Sr(3)-F(3) bond length is 2.51 Å. The Sr(3)-F(34) bond length is 2.52 Å. The Sr(3)-F(4) bond length is 2.48 Å. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one F(16), one F(17), one F(18), one F(22), one F(25), one F(27), one F(37), one F(38), and one F(9) atom. The Sr(4)-F(16) bond length is 2.57 Å. The Sr(4)-F(17) bond length is 2.64 Å. The Sr(4)-F(18) bond length is 2.65 Å. The Sr(4)-F(22) bond length is 2.76 Å. The Sr(4)-F(25) bond length is 2.55 Å. The Sr(4)-F(27) bond length is 2.48 Å. The Sr(4)-F(37) bond length is 2.50 Å. The Sr(4)-F(38) bond length is 2.45 Å. The Sr(4)-F(9) bond length is 2.82 Å. In the fifth Sr site, Sr(5) is bonded in a 9-coordinate geometry to one F(11), one F(13), one F(16), one F(18), one F(2), one F(24), one F(29), one F(30), and one F(6) atom. The Sr(5)-F(11) bond length is 2.94 Å. The Sr(5)-F(13) bond length is 2.66 Å. The Sr(5)-F(16) bond length is 2.67 Å. The Sr(5)-F(18) bond length is 2.39 Å. The Sr(5)-F(2) bond length is 2.60 Å. The Sr(5)-F(24) bond length is 2.83 Å. The Sr(5)-F(29) bond length is 2.93 Å. The Sr(5)-F(30) bond length is 2.45 Å. The Sr(5)-F(6) bond length is 2.57 Å. In the sixth Sr site, Sr(6) is bonded in a 8-coordinate geometry to one F(12), one F(19), one F(21), one F(23), one F(26), one F(31), one F(7), and one F(8) atom. The Sr(6)-F(12) bond length is 2.73 Å. The Sr(6)-F(19) bond length is 2.38 Å. The Sr(6)-F(21) bond length is 2.66 Å. The Sr(6)-F(23) bond length is 2.61 Å. The Sr(6)-F(26) bond length is 2.76 Å. The Sr(6)-F(31) bond length is 2.51 Å. The Sr(6)-F(7) bond length is 2.50 Å. The Sr(6)-F(8) bond length is 2.58 Å. In the seventh Sr site, Sr(7) is bonded in a 8-coordinate geometry to one F(1), one F(10), one F(14), one F(15), one F(19), one F(20), one F(21), and one F(28) atom. The Sr(7)-F(1) bond length is 2.46 Å. The Sr(7)-F(10) bond length is 2.46 Å. The Sr(7)-F(14) bond length is 2.60 Å. The Sr(7)-F(15) bond length is 2.72 Å. The Sr(7)-F(19) bond length is 2.59 Å. The Sr(7)-F(20) bond length is 2.65 Å. The Sr(7)-F(21) bond length is 2.62 Å. The Sr(7)-F(28) bond length is 2.76 Å. In the eighth Sr site, Sr(8) is bonded in a 9-coordinate geometry to one F(17), one F(18), one F(19), one F(20), one F(23), one F(27), one F(3), one F(33), and one F(34) atom. The Sr(8)-F(17) bond length is 2.48 Å. The Sr(8)-F(18) bond length is 2.77 Å. The Sr(8)-F(19) bond length is 2.71 Å. The Sr(8)-F(20) bond length is 2.56 Å. The Sr(8)-F(23) bond length is 3.11 Å. The Sr(8)-F(27) bond length is 2.99 Å. The Sr(8)-F(3) bond length is 2.51 Å. The Sr(8)-F(33) bond length is 2.53 Å. The Sr(8)-F(34) bond length is 2.51 Å. In the ninth Sr site, Sr(9) is bonded in a 7-coordinate geometry to one F(22), one F(27), one F(32), one F(33), one F(36), one F(37), and one F(9) atom. The Sr(9)-F(22) bond length is 2.48 Å. The Sr(9)-F(27) bond length is 2.71 Å. The Sr(9)-F(32) bond length is 2.63 Å. The Sr(9)-F(33) bond length is 2.35 Å. The Sr(9)-F(36) bond length is 2.65 Å. The Sr(9)-F(37) bond length is 2.64 Å. The Sr(9)-F(9) bond length is 2.47 Å. In the tenth Sr site, Sr(10) is bonded in a 8-coordinate geometry to one F(12), one F(23), one F(26), one F(3), one F(31), one F(32), one F(33), and one F(7) atom. The Sr(10)-F(12) bond length is 2.46 Å. The Sr(10)-F(23) bond length is 2.50 Å. The Sr(10)-F(26) bond length is 2.62 Å. The Sr(10)-F(3) bond length is 2.78 Å. The Sr(10)-F(31) bond length is 2.67 Å. The Sr(10)-F(32) bond length is 2.58 Å. The Sr(10)-F(33) bond length is 2.50 Å. The Sr(10)-F(7) bond length is 2.70 Å. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one F(11), one F(2), one F(25), one F(35), one F(36), and one F(8) atom to form corner-sharing FeF6 octahedra. The corner-sharing octahedral tilt angles range from 44-45°. The Fe(1)-F(11) bond length is 1.92 Å. The Fe(1)-F(2) bond length is 1.94 Å. The Fe(1)-F(25) bond length is 1.92 Å. The Fe(1)-F(35) bond length is 1.96 Å. The Fe(1)-F(36) bond length is 2.03 Å. The Fe(1)-F(8) bond length is 1.94 Å. In the second Fe site, Fe(2) is bonded in an octahedral geometry to one F(1), one F(10), one F(16), one F(3), one F(31), and one F(7) atom. The Fe(2)-F(1) bond length is 1.95 Å. The Fe(2)-F(10) bond length is 1.97 Å. The Fe(2)-F(16) bond length is 1.94 Å. The Fe(2)-F(3) bond length is 1.99 Å. The Fe(2)-F(31) bond length is 1.96 Å. The Fe(2)-F(7) bond length is 1.97 Å. In the third Fe site, Fe(3) is bonded to one F(14), one F(26), one F(29), one F(35), one F(36), and one F(38) atom to form corner-sharing FeF6 octahedra. The corner-sharing octahedral tilt angles range from 44-45°. The Fe(3)-F(14) bond length is 1.94 Å. The Fe(3)-F(26) bond length is 1.94 Å. The Fe(3)-F(29) bond length is 1.93 Å. The Fe(3)-F(35) bond length is 1.99 Å. The Fe(3)-F(36) bond length is 2.03 Å. The Fe(3)-F(38) bond length is 1.90 Å. In the fourth Fe site, Fe(4) is bonded in an octahedral geometry to one F(12), one F(17), one F(22), one F(23), one F(5), and one F(9) atom. The Fe(4)-F(12) bond length is 1.94 Å. The Fe(4)-F(17) bond length is 1.99 Å. The Fe(4)-F(22) bond length is 1.95 Å. The Fe(4)-F(23) bond length is 1.99 Å. The Fe(4)-F(5) bond length is 1.92 Å. The Fe(4)-F(9) bond length is 1.95 Å. In the fifth Fe site, Fe(5) is bonded in an octahedral geometry to one F(13), one F(15), one F(20), one F(24), one F(28), and one F(32) atom. The Fe(5)-F(13) bond length is 1.98 Å. The Fe(5)-F(15) bond length is 1.94 Å. The Fe(5)-F(20) bond length is 1.98 Å. The Fe(5)-F(24) bond length is 1.94 Å. The Fe(5)-F(28) bond length is 1.98 Å. The Fe(5)-F(32) bond length is 1.93 Å. In the sixth Fe site, Fe(6) is bonded in an octahedral geometry to one F(21), one F(27), one F(30), one F(34), one F(37), and one F(6) atom. The Fe(6)-F(21) bond length is 1.94 Å. The Fe(6)-F(27) bond length is 2.00 Å. The Fe(6)-F(30) bond length is 1.92 Å. The Fe(6)-F(34) bond length is 1.99 Å. The Fe(6)-F(37) bond length is 1.95 Å. The Fe(6)-F(6) bond length is 1.97 Å. There are thirty-eight inequivalent F sites. In the first F site, F(1) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(7), and one Fe(2) atom. In the second F site, F(2) is bonded in a distorted trigonal non-coplanar geometry to one Sr(2), one Sr(5), and one Fe(1) atom. In the third F site, F(3) is bonded in a 4-coordinate geometry to one Sr(10), one Sr(3), one Sr(8), and one Fe(2) atom. In the fourth F site, F(4) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), one Sr(2), and one Sr(3) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Sr(1), one Sr(2), and one Fe(4) atom. In the sixth F site, F(6) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(5), and one Fe(6) atom. In the seventh F site, F(7) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(6), and one Fe(2) atom. In the eighth F site, F(8) is bonded in a distorted trigonal non-coplanar geometry to one Sr(2), one Sr(6), and one Fe(1) atom. In the ninth F site, F(9) is bonded in a 3-coordinate geometry to one Sr(4), one Sr(9), and one Fe(4) atom. In the tenth F site, F(10) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(3), one Sr(7), and one Fe(2) atom. In the eleventh F site, F(11) is bonded in a 1-coordinate geometry to one Sr(1), one Sr(5), and one Fe(1) atom. In the twelfth F site, F(12) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(6), and one Fe(4) atom. In the thirteenth F site, F(13) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(5), and one Fe(5) atom. In the fourteenth F site, F(14) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(7), and one Fe(3) atom. In the fifteenth F site, F(15) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(7), and one Fe(5) atom. In the sixteenth F site, F(16) is bonded in a distorted trigonal planar geometry to one Sr(4), one Sr(5), and one Fe(2) atom. In the seventeenth F site, F(17) is bonded to one Sr(3), one Sr(4), one Sr(8), and one Fe(4) atom to form distorted FSr3Fe tetrahedra that share  an edgeedge with one F(20)Sr3Fe tetrahedra,  an edgeedge with one F(19)Sr4 tetrahedra, and  a faceface with one F(18)Sr4 tetrahedra. In the eighteenth F site, F(18) is bonded to one Sr(3), one Sr(4), one Sr(5), and one Sr(8) atom to form distorted FSr4 tetrahedra that share  an edgeedge with one F(20)Sr3Fe tetrahedra,  an edgeedge with one F(19)Sr4 tetrahedra, and  a faceface with one F(17)Sr3Fe tetrahedra. In the nineteenth F site, F(19) is bonded to one Sr(3), one Sr(6), one Sr(7), and one Sr(8) atom to form distorted FSr4 tetrahedra that share  an edgeedge with one F(17)Sr3Fe tetrahedra,  an edgeedge with one F(18)Sr4 tetrahedra, and  a faceface with one F(20)Sr3Fe tetrahedra. In the twentieth F site, F(20) is bonded to one Sr(3), one Sr(7), one Sr(8), and one Fe(5) atom to form distorted FSr3Fe tetrahedra that share  an edgeedge with one F(17)Sr3Fe tetrahedra,  an edgeedge with one F(18)Sr4 tetrahedra, and  a faceface with one F(19)Sr4 tetrahedra. In the twenty-first F site, F(21) is bonded in a distorted trigonal planar geometry to one Sr(6), one Sr(7), and one Fe(6) atom. In the twenty-second F site, F(22) is bonded in a 3-coordinate geometry to one Sr(4), one Sr(9), and one Fe(4) atom. In the twenty-third F site, F(23) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(6), one Sr(8), and one Fe(4) atom. In the twenty-fourth F site, F(24) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(5), and one Fe(5) atom. In the twenty-fifth F site, F(25) is bonded in a 2-coordinate geometry to one Sr(4) and one Fe(1) atom. In the twenty-sixth F site, F(26) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(6), and one Fe(3) atom. In the twenty-seventh F site, F(27) is bonded in a 4-coordinate geometry to one Sr(4), one Sr(8), one Sr(9), and one Fe(6) atom. In the twenty-eighth F site, F(28) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(7), and one Fe(5) atom. In the twenty-ninth F site, F(29) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(5), and one Fe(3) atom. In the thirtieth F site, F(30) is bonded in a distorted bent 150 degrees geometry to one Sr(1), one Sr(5), and one Fe(6) atom. In the thirty-first F site, F(31) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(6), and one Fe(2) atom. In the thirty-second F site, F(32) is bonded in a distorted trigonal planar geometry to one Sr(10), one Sr(9), and one Fe(5) atom. In the thirty-third F site, F(33) is bonded in a distorted trigonal non-coplanar geometry to one Sr(10), one Sr(8), and one Sr(9) atom. In the thirty-fourth F site, F(34) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(3), one Sr(8), and one Fe(6) atom. In the thirty-fifth F site, F(35) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one Fe(3) atom. In the thirty-sixth F site, F(36) is bonded in a distorted trigonal planar geometry to one Sr(9), one Fe(1), and one Fe(3) atom. In the thirty-seventh F site, F(37) is bonded in a 3-coordinate geometry to one Sr(4), one Sr(9), and one Fe(6) atom. In the thirty-eighth F site, F(38) is bonded in a distorted bent 150 degrees geometry to one Sr(4) and one Fe(3) atom.