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(17), one F(24), one F(29), one F(30), one F(34), one F(35), one F(36), one F(5), and one F(9) atom. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one F(14), one F(2), one F(23), one F(25), one F(26), one F(4), one F(5), and one F(8) atom. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one F(10), one F(12), one F(13), one F(15), one F(19), one F(20), one F(3), one F(38), and one F(4) atom. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one F(16), one F(18), one F(20), one F(31), one F(37), one F(38), one F(7), 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(14), one F(16), one F(18), one F(2), one F(24), one F(38), and one F(6) atom. In the sixth Sr site, Sr(6) is bonded in a 8-coordinate geometry to one F(10), one F(12), one F(19), one F(21), one F(23), one F(25), 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(15), one F(19), one F(2), one F(21), one F(28), one F(30), and one F(6) atom. In the eighth Sr site, Sr(8) is bonded in a 8-coordinate geometry to one F(1), one F(17), one F(18), one F(19), one F(20), one F(27), one F(33), and one F(34) atom. In the ninth Sr site, Sr(9) is bonded in a 9-coordinate geometry to one F(11), one F(22), one F(24), one F(25), one F(27), one F(32), one F(33), one F(36), and one F(37) atom. In the tenth Sr site, Sr(10) is bonded in a 9-coordinate geometry to one F(12), one F(26), one F(28), one F(29), one F(3), one F(31), one F(32), one F(33), and one F(8) atom. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 7-coordinate geometry to one F(11), one F(2), one F(25), one F(28), one F(35), one F(7), and one F(8) atom. 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(4) atom. In the third Fe site, Fe(3) is bonded in a 6-coordinate geometry to one F(14), one F(26), one F(28), one F(30), one F(35), and one F(36) atom. In the fourth Fe site, Fe(4) is bonded in an octahedral geometry to one F(12), one F(20), 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(17), one F(24), one F(29), and one F(32) atom. In the sixth Fe site, Fe(6) is bonded in a distorted pentagonal pyramidal geometry to one F(21), one F(27), one F(34), one F(37), one F(38), and one F(6) atom. There are thirty-eight inequivalent F sites. In the first F site, F(1) is bonded in a 2-coordinate geometry to one Sr(7), one Sr(8), and one Fe(2) atom. In the second F site, F(2) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(5), one Sr(7), and one Fe(1) atom. In the third F site, F(3) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(3), and one Fe(2) atom. In the fourth F site, F(4) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(3), and one Fe(2) atom. In the fifth F site, F(5) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), one Sr(2), and one Fe(4) atom. In the sixth F site, F(6) is bonded in a distorted trigonal non-coplanar geometry to one Sr(5), one Sr(7), and one Fe(6) atom. In the seventh F site, F(7) is bonded in a distorted trigonal planar geometry to one Sr(4), one Sr(6), and one Fe(1) atom. In the eighth F site, F(8) is bonded in a distorted single-bond geometry to one Sr(10), 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(1), one Sr(4), and one Fe(4) atom. In the tenth F site, F(10) is bonded in a distorted T-shaped geometry to one Sr(3), one Sr(6), and one Fe(2) atom. In the eleventh F site, F(11) is bonded in a trigonal non-coplanar geometry to one Sr(5), one Sr(9), and one Fe(1) atom. In the twelfth F site, F(12) is bonded in a 4-coordinate geometry to one Sr(10), one Sr(3), one Sr(6), and one Fe(4) atom. In the thirteenth F site, F(13) is bonded in a trigonal non-coplanar geometry to one Sr(3), one Sr(5), and one Fe(5) atom. In the fourteenth F site, F(14) is bonded in a distorted trigonal planar geometry to one Sr(2), one Sr(5), and one Fe(3) atom. In the fifteenth F site, F(15) is bonded in a 1-coordinate geometry to one Sr(3), one Sr(7), and one Fe(5) atom. In the sixteenth F site, F(16) is bonded in a 3-coordinate geometry to one Sr(4), one Sr(5), and one Fe(2) atom. In the seventeenth F site, F(17) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(8), and one Fe(5) atom. In the eighteenth F site, F(18) is bonded in a distorted trigonal non-coplanar geometry to one Sr(4), one Sr(5), and one Sr(8) atom. 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 edge-sharing FSr4 tetrahedra. In the twentieth F site, F(20) is bonded to one Sr(3), one Sr(4), one Sr(8), and one Fe(4) atom to form distorted edge-sharing FSr3Fe tetrahedra. In the twenty-first F site, F(21) is bonded in a 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 distorted bent 150 degrees geometry to one Sr(9) and one Fe(4) atom. In the twenty-third F site, F(23) is bonded in a distorted trigonal non-coplanar geometry to one Sr(2), one Sr(6), and one Fe(4) atom. In the twenty-fourth F site, F(24) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(5), one Sr(9), and one Fe(5) atom. In the twenty-fifth F site, F(25) is bonded in a distorted rectangular see-saw-like geometry to one Sr(2), one Sr(6), one Sr(9), and one Fe(1) atom. In the twenty-sixth F site, F(26) is bonded in a distorted trigonal planar geometry to one Sr(10), one Sr(2), and one Fe(3) atom. In the twenty-seventh F site, F(27) is bonded in a trigonal non-coplanar geometry to one Sr(8), one Sr(9), and one Fe(6) atom. In the twenty-eighth F site, F(28) is bonded in a 4-coordinate geometry to one Sr(10), one Sr(7), one Fe(1), and one Fe(3) atom. In the twenty-ninth F site, F(29) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(10), and one Fe(5) atom. In the thirtieth F site, F(30) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(7), and one Fe(3) atom. In the thirty-first F site, F(31) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(4), and one Fe(2) atom. In the thirty-second F site, F(32) is bonded in a distorted single-bond 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 trigonal planar 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 distorted trigonal non-coplanar geometry to one Sr(1), one Sr(8), and one Fe(6) atom. In the thirty-fifth F site, F(35) is bonded in a 3-coordinate geometry to one Sr(1), one Fe(1), and one Fe(3) atom. In the thirty-sixth F site, F(36) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(9), and one Fe(3) atom. In the thirty-seventh F site, F(37) is bonded in a distorted trigonal non-coplanar 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 4-coordinate geometry to one Sr(3), one Sr(4), one Sr(5), and one Fe(6) 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(17), one F(24), one F(29), one F(30), one F(34), one F(35), one F(36), one F(5), and one F(9) atom. The Sr(1)-F(17) bond length is 2.87 Å. The Sr(1)-F(24) bond length is 2.56 Å. The Sr(1)-F(29) bond length is 2.69 Å. The Sr(1)-F(30) bond length is 2.59 Å. The Sr(1)-F(34) bond length is 2.62 Å. The Sr(1)-F(35) bond length is 2.61 Å. The Sr(1)-F(36) bond length is 2.87 Å. The Sr(1)-F(5) bond length is 2.51 Å. The Sr(1)-F(9) bond length is 2.63 Å. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one F(14), one F(2), one F(23), one F(25), one F(26), one F(4), one F(5), and one F(8) atom. The Sr(2)-F(14) bond length is 2.43 Å. The Sr(2)-F(2) bond length is 2.66 Å. The Sr(2)-F(23) bond length is 2.64 Å. The Sr(2)-F(25) bond length is 2.84 Å. The Sr(2)-F(26) bond length is 2.57 Å. The Sr(2)-F(4) bond length is 2.53 Å. The Sr(2)-F(5) bond length is 2.49 Å. The Sr(2)-F(8) bond length is 2.66 Å. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one F(10), one F(12), one F(13), one F(15), one F(19), one F(20), one F(3), one F(38), and one F(4) atom. The Sr(3)-F(10) bond length is 2.65 Å. The Sr(3)-F(12) bond length is 2.88 Å. The Sr(3)-F(13) bond length is 2.42 Å. The Sr(3)-F(15) bond length is 2.94 Å. The Sr(3)-F(19) bond length is 2.46 Å. The Sr(3)-F(20) bond length is 2.48 Å. The Sr(3)-F(3) bond length is 2.38 Å. The Sr(3)-F(38) bond length is 2.60 Å. The Sr(3)-F(4) bond length is 2.70 Å. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one F(16), one F(18), one F(20), one F(31), one F(37), one F(38), one F(7), and one F(9) atom. The Sr(4)-F(16) bond length is 2.59 Å. The Sr(4)-F(18) bond length is 2.57 Å. The Sr(4)-F(20) bond length is 2.61 Å. The Sr(4)-F(31) bond length is 2.83 Å. The Sr(4)-F(37) bond length is 2.53 Å. The Sr(4)-F(38) bond length is 2.67 Å. The Sr(4)-F(7) bond length is 2.50 Å. The Sr(4)-F(9) bond length is 2.63 Å. In the fifth Sr site, Sr(5) is bonded in a 9-coordinate geometry to one F(11), one F(13), one F(14), one F(16), one F(18), one F(2), one F(24), one F(38), and one F(6) atom. The Sr(5)-F(11) bond length is 2.50 Å. The Sr(5)-F(13) bond length is 2.55 Å. The Sr(5)-F(14) bond length is 2.73 Å. The Sr(5)-F(16) bond length is 2.40 Å. The Sr(5)-F(18) bond length is 2.43 Å. The Sr(5)-F(2) bond length is 2.84 Å. The Sr(5)-F(24) bond length is 2.56 Å. The Sr(5)-F(38) bond length is 2.96 Å. The Sr(5)-F(6) bond length is 2.62 Å. In the sixth Sr site, Sr(6) is bonded in a 8-coordinate geometry to one F(10), one F(12), one F(19), one F(21), one F(23), one F(25), one F(7), and one F(8) atom. The Sr(6)-F(10) bond length is 2.42 Å. The Sr(6)-F(12) bond length is 2.71 Å. The Sr(6)-F(19) bond length is 2.52 Å. The Sr(6)-F(21) bond length is 2.49 Å. The Sr(6)-F(23) bond length is 2.51 Å. The Sr(6)-F(25) bond length is 2.51 Å. The Sr(6)-F(7) bond length is 2.59 Å. The Sr(6)-F(8) bond length is 2.71 Å. In the seventh Sr site, Sr(7) is bonded in a 8-coordinate geometry to one F(1), one F(15), one F(19), one F(2), one F(21), one F(28), one F(30), and one F(6) atom. The Sr(7)-F(1) bond length is 2.39 Å. The Sr(7)-F(15) bond length is 2.60 Å. The Sr(7)-F(19) bond length is 2.66 Å. The Sr(7)-F(2) bond length is 2.75 Å. The Sr(7)-F(21) bond length is 2.42 Å. The Sr(7)-F(28) bond length is 2.53 Å. The Sr(7)-F(30) bond length is 2.71 Å. The Sr(7)-F(6) bond length is 2.66 Å. In the eighth Sr site, Sr(8) is bonded in a 8-coordinate geometry to one F(1), one F(17), one F(18), one F(19), one F(20), one F(27), one F(33), and one F(34) atom. The Sr(8)-F(1) bond length is 3.03 Å. The Sr(8)-F(17) bond length is 2.49 Å. The Sr(8)-F(18) bond length is 2.71 Å. The Sr(8)-F(19) bond length is 2.67 Å. The Sr(8)-F(20) bond length is 2.52 Å. The Sr(8)-F(27) bond length is 2.49 Å. The Sr(8)-F(33) bond length is 2.49 Å. The Sr(8)-F(34) bond length is 2.54 Å. In the ninth Sr site, Sr(9) is bonded in a 9-coordinate geometry to one F(11), one F(22), one F(24), one F(25), one F(27), one F(32), one F(33), one F(36), and one F(37) atom. The Sr(9)-F(11) bond length is 2.55 Å. The Sr(9)-F(22) bond length is 2.56 Å. The Sr(9)-F(24) bond length is 2.87 Å. The Sr(9)-F(25) bond length is 2.58 Å. The Sr(9)-F(27) bond length is 2.58 Å. The Sr(9)-F(32) bond length is 2.84 Å. The Sr(9)-F(33) bond length is 2.41 Å. The Sr(9)-F(36) bond length is 2.63 Å. The Sr(9)-F(37) bond length is 2.70 Å. In the tenth Sr site, Sr(10) is bonded in a 9-coordinate geometry to one F(12), one F(26), one F(28), one F(29), one F(3), one F(31), one F(32), one F(33), and one F(8) atom. The Sr(10)-F(12) bond length is 2.58 Å. The Sr(10)-F(26) bond length is 2.62 Å. The Sr(10)-F(28) bond length is 2.96 Å. The Sr(10)-F(29) bond length is 2.48 Å. The Sr(10)-F(3) bond length is 2.60 Å. The Sr(10)-F(31) bond length is 2.45 Å. The Sr(10)-F(32) bond length is 2.63 Å. The Sr(10)-F(33) bond length is 2.41 Å. The Sr(10)-F(8) bond length is 3.10 Å. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 7-coordinate geometry to one F(11), one F(2), one F(25), one F(28), one F(35), one F(7), and one F(8) atom. The Fe(1)-F(11) bond length is 1.97 Å. The Fe(1)-F(2) bond length is 2.00 Å. The Fe(1)-F(25) bond length is 2.12 Å. The Fe(1)-F(28) bond length is 2.52 Å. The Fe(1)-F(35) bond length is 1.98 Å. The Fe(1)-F(7) bond length is 2.00 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(4) atom. The Fe(2)-F(1) bond length is 1.92 Å. The Fe(2)-F(10) bond length is 1.97 Å. The Fe(2)-F(16) bond length is 1.92 Å. The Fe(2)-F(3) bond length is 1.94 Å. The Fe(2)-F(31) bond length is 1.98 Å. The Fe(2)-F(4) bond length is 2.00 Å. In the third Fe site, Fe(3) is bonded in a 6-coordinate geometry to one F(14), one F(26), one F(28), one F(30), one F(35), and one F(36) atom. The Fe(3)-F(14) bond length is 1.97 Å. The Fe(3)-F(26) bond length is 1.93 Å. The Fe(3)-F(28) bond length is 1.97 Å. The Fe(3)-F(30) bond length is 1.93 Å. The Fe(3)-F(35) bond length is 2.31 Å. The Fe(3)-F(36) bond length is 1.87 Å. In the fourth Fe site, Fe(4) is bonded in an octahedral geometry to one F(12), one F(20), one F(22), one F(23), one F(5), and one F(9) atom. The Fe(4)-F(12) bond length is 1.99 Å. The Fe(4)-F(20) bond length is 2.00 Å. The Fe(4)-F(22) bond length is 1.92 Å. The Fe(4)-F(23) bond length is 1.96 Å. The Fe(4)-F(5) bond length is 1.99 Å. The Fe(4)-F(9) bond length is 1.92 Å. In the fifth Fe site, Fe(5) is bonded in an octahedral geometry to one F(13), one F(15), one F(17), one F(24), one F(29), and one F(32) atom. The Fe(5)-F(13) bond length is 1.96 Å. The Fe(5)-F(15) bond length is 1.94 Å. The Fe(5)-F(17) bond length is 1.97 Å. The Fe(5)-F(24) bond length is 1.99 Å. The Fe(5)-F(29) bond length is 1.96 Å. The Fe(5)-F(32) bond length is 1.91 Å. In the sixth Fe site, Fe(6) is bonded in a distorted pentagonal pyramidal geometry to one F(21), one F(27), one F(34), one F(37), one F(38), and one F(6) atom. The Fe(6)-F(21) bond length is 2.01 Å. The Fe(6)-F(27) bond length is 1.98 Å. The Fe(6)-F(34) bond length is 2.00 Å. The Fe(6)-F(37) bond length is 1.97 Å. The Fe(6)-F(38) bond length is 2.01 Å. The Fe(6)-F(6) bond length is 1.94 Å. There are thirty-eight inequivalent F sites. In the first F site, F(1) is bonded in a 2-coordinate geometry to one Sr(7), one Sr(8), and one Fe(2) atom. In the second F site, F(2) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(5), one Sr(7), and one Fe(1) atom. In the third F site, F(3) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(3), and one Fe(2) atom. In the fourth F site, F(4) is bonded in a 3-coordinate geometry to one Sr(2), one Sr(3), and one Fe(2) atom. In the fifth F site, F(5) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), one Sr(2), and one Fe(4) atom. In the sixth F site, F(6) is bonded in a distorted trigonal non-coplanar geometry to one Sr(5), one Sr(7), and one Fe(6) atom. In the seventh F site, F(7) is bonded in a distorted trigonal planar geometry to one Sr(4), one Sr(6), and one Fe(1) atom. In the eighth F site, F(8) is bonded in a distorted single-bond geometry to one Sr(10), 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(1), one Sr(4), and one Fe(4) atom. In the tenth F site, F(10) is bonded in a distorted T-shaped geometry to one Sr(3), one Sr(6), and one Fe(2) atom. In the eleventh F site, F(11) is bonded in a trigonal non-coplanar geometry to one Sr(5), one Sr(9), and one Fe(1) atom. In the twelfth F site, F(12) is bonded in a 4-coordinate geometry to one Sr(10), one Sr(3), one Sr(6), and one Fe(4) atom. In the thirteenth F site, F(13) is bonded in a trigonal non-coplanar geometry to one Sr(3), one Sr(5), and one Fe(5) atom. In the fourteenth F site, F(14) is bonded in a distorted trigonal planar geometry to one Sr(2), one Sr(5), and one Fe(3) atom. In the fifteenth F site, F(15) is bonded in a 1-coordinate geometry to one Sr(3), one Sr(7), and one Fe(5) atom. In the sixteenth F site, F(16) is bonded in a 3-coordinate geometry to one Sr(4), one Sr(5), and one Fe(2) atom. In the seventeenth F site, F(17) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(8), and one Fe(5) atom. In the eighteenth F site, F(18) is bonded in a distorted trigonal non-coplanar geometry to one Sr(4), one Sr(5), and one Sr(8) atom. 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 edge-sharing FSr4 tetrahedra. In the twentieth F site, F(20) is bonded to one Sr(3), one Sr(4), one Sr(8), and one Fe(4) atom to form distorted edge-sharing FSr3Fe tetrahedra. In the twenty-first F site, F(21) is bonded in a 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 distorted bent 150 degrees geometry to one Sr(9) and one Fe(4) atom. In the twenty-third F site, F(23) is bonded in a distorted trigonal non-coplanar geometry to one Sr(2), one Sr(6), and one Fe(4) atom. In the twenty-fourth F site, F(24) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(5), one Sr(9), and one Fe(5) atom. In the twenty-fifth F site, F(25) is bonded in a distorted rectangular see-saw-like geometry to one Sr(2), one Sr(6), one Sr(9), and one Fe(1) atom. In the twenty-sixth F site, F(26) is bonded in a distorted trigonal planar geometry to one Sr(10), one Sr(2), and one Fe(3) atom. In the twenty-seventh F site, F(27) is bonded in a trigonal non-coplanar geometry to one Sr(8), one Sr(9), and one Fe(6) atom. In the twenty-eighth F site, F(28) is bonded in a 4-coordinate geometry to one Sr(10), one Sr(7), one Fe(1), and one Fe(3) atom. In the twenty-ninth F site, F(29) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(10), and one Fe(5) atom. In the thirtieth F site, F(30) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(7), and one Fe(3) atom. In the thirty-first F site, F(31) is bonded in a 3-coordinate geometry to one Sr(10), one Sr(4), and one Fe(2) atom. In the thirty-second F site, F(32) is bonded in a distorted single-bond 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 trigonal planar 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 distorted trigonal non-coplanar geometry to one Sr(1), one Sr(8), and one Fe(6) atom. In the thirty-fifth F site, F(35) is bonded in a 3-coordinate geometry to one Sr(1), one Fe(1), and one Fe(3) atom. In the thirty-sixth F site, F(36) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(9), and one Fe(3) atom. In the thirty-seventh F site, F(37) is bonded in a distorted trigonal non-coplanar 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 4-coordinate geometry to one Sr(3), one Sr(4), one Sr(5), and one Fe(6) atom.