The material structure described by Ti9Fe11O30 is Ilmenite-like structured and crystallizes in the triclinic P1 space group. There are nine inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(26), one O(28), one O(3), one O(5), and one O(7) atom to form distorted TiO6 octahedra that share  a cornercorner with one Ti(9)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with three equivalent Ti(3)O6 octahedra, corners with three equivalent Fe(10)O6 octahedra,  an edgeedge with one Fe(4)O6 octahedra, edges with two equivalent Fe(11)O6 octahedra, and  a faceface with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-62°. In the second Ti site, Ti(2) is bonded to one O(11), one O(13), one O(2), one O(4), one O(6), and one O(9) atom to form distorted TiO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with three equivalent Ti(3)O6 octahedra, corners with three equivalent Ti(5)O6 octahedra,  an edgeedge with one Fe(6)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, and  a faceface with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-59°. In the third Ti site, Ti(3) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form distorted TiO6 octahedra that share  a cornercorner with one Fe(11)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra, corners with three equivalent Ti(1)O6 octahedra, corners with three equivalent Ti(2)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and  a faceface with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-62°. In the fourth Ti site, Ti(4) is bonded to one O(10), one O(12), one O(14), one O(15), one O(17), and one O(19) atom to form distorted TiO6 octahedra that share  a cornercorner with one Fe(5)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, corners with three equivalent Fe(6)O6 octahedra, corners with three equivalent Fe(7)O6 octahedra,  an edgeedge with one Ti(5)O6 octahedra, edges with two equivalent Ti(7)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-62°. In the fifth Ti site, Ti(5) is bonded to one O(10), one O(11), one O(13), one O(15), one O(6), and one O(8) atom to form distorted TiO6 octahedra that share  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(6)O6 octahedra, corners with three equivalent Ti(2)O6 octahedra, corners with three equivalent Fe(3)O6 octahedra,  an edgeedge with one Ti(4)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and  a faceface with one Fe(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-64°. In the sixth Ti site, Ti(6) is bonded to one O(16), one O(18), one O(20), one O(21), one O(23), and one O(25) atom to form TiO6 octahedra that share  a cornercorner with one Ti(8)O6 octahedra, corners with two equivalent Fe(5)O6 octahedra, corners with three equivalent Fe(7)O6 octahedra, corners with three equivalent Fe(9)O6 octahedra,  an edgeedge with one Ti(7)O6 octahedra, edges with two equivalent Fe(8)O6 octahedra, and  a faceface with one Fe(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. In the seventh Ti site, Ti(7) is bonded to one O(12), one O(14), one O(16), one O(17), one O(19), and one O(21) atom to form distorted TiO6 octahedra that share  a cornercorner with one Fe(6)O6 octahedra, corners with two equivalent Fe(7)O6 octahedra, corners with three equivalent Fe(3)O6 octahedra, corners with three equivalent Fe(5)O6 octahedra,  an edgeedge with one Ti(6)O6 octahedra, edges with two equivalent Ti(4)O6 octahedra, and  a faceface with one Fe(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-63°. In the eighth Ti site, Ti(8) is bonded to one O(20), one O(22), one O(24), one O(27), one O(29), and one O(30) atom to form distorted TiO6 octahedra that share  a cornercorner with one Ti(6)O6 octahedra, corners with two equivalent Ti(9)O6 octahedra, corners with three equivalent Fe(10)O6 octahedra, corners with three equivalent Fe(8)O6 octahedra,  an edgeedge with one Fe(11)O6 octahedra, edges with two equivalent Fe(9)O6 octahedra, and  a faceface with one Ti(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-54°. In the ninth Ti site, Ti(9) is bonded to one O(22), one O(24), one O(26), one O(27), one O(29), and one O(30) atom to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra, corners with two equivalent Ti(8)O6 octahedra, corners with three equivalent Fe(11)O6 octahedra, corners with three equivalent Fe(9)O6 octahedra,  an edgeedge with one Fe(8)O6 octahedra, edges with two equivalent Fe(10)O6 octahedra, and  a faceface with one Ti(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-57°. There are eleven inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(2), one O(28), one O(3), one O(5), and one O(7) atom to form distorted FeO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with three equivalent Fe(11)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra,  an edgeedge with one Fe(10)O6 octahedra, edges with two equivalent Ti(3)O6 octahedra, and  a faceface with one Ti(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the second Fe site, Fe(2) is bonded to one O(11), one O(13), one O(4), one O(6), one O(8), and one O(9) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra, corners with three equivalent Fe(6)O6 octahedra,  an edgeedge with one Ti(3)O6 octahedra, edges with two equivalent Ti(5)O6 octahedra, and  a faceface with one Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-63°. In the third Fe site, Fe(3) is bonded to one O(10), one O(12), one O(15), one O(17), one O(19), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Ti(4)O6 octahedra, corners with three equivalent Ti(5)O6 octahedra, corners with three equivalent Ti(7)O6 octahedra,  an edgeedge with one Fe(7)O6 octahedra, edges with two equivalent Fe(6)O6 octahedra, and  a faceface with one Ti(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-63°. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(11), one O(2), one O(4), one O(7), and one O(9) atom to form distorted FeO6 octahedra that share  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, and  a faceface with one Ti(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-62°. In the fifth Fe site, Fe(5) is bonded to one O(14), one O(16), one O(18), one O(21), one O(23), and one O(25) atom to form distorted FeO6 octahedra that share  a cornercorner with one Ti(4)O6 octahedra, corners with two equivalent Ti(6)O6 octahedra, corners with three equivalent Ti(7)O6 octahedra, corners with three equivalent Fe(8)O6 octahedra,  an edgeedge with one Fe(9)O6 octahedra, edges with two equivalent Fe(7)O6 octahedra, and  a faceface with one Ti(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-62°. In the sixth Fe site, Fe(6) is bonded to one O(10), one O(13), one O(15), one O(17), one O(6), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one Ti(7)O6 octahedra, corners with two equivalent Ti(5)O6 octahedra, corners with three equivalent Ti(4)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and  a faceface with one Ti(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-64°. In the seventh Fe site, Fe(7) is bonded to one O(12), one O(14), one O(16), one O(19), one O(21), and one O(23) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(8)O6 octahedra, corners with two equivalent Ti(7)O6 octahedra, corners with three equivalent Ti(4)O6 octahedra, corners with three equivalent Ti(6)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and  a faceface with one Ti(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-65°. In the eighth Fe site, Fe(8) is bonded to one O(18), one O(20), one O(22), one O(23), one O(25), and one O(27) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(7)O6 octahedra, corners with two equivalent Fe(9)O6 octahedra, corners with three equivalent Ti(8)O6 octahedra, corners with three equivalent Fe(5)O6 octahedra,  an edgeedge with one Ti(9)O6 octahedra, edges with two equivalent Ti(6)O6 octahedra, and  a faceface with one Fe(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-65°. In the ninth Fe site, Fe(9) is bonded to one O(18), one O(20), one O(22), one O(25), one O(27), and one O(29) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(10)O6 octahedra, corners with two equivalent Fe(8)O6 octahedra, corners with three equivalent Ti(6)O6 octahedra, corners with three equivalent Ti(9)O6 octahedra,  an edgeedge with one Fe(5)O6 octahedra, edges with two equivalent Ti(8)O6 octahedra, and  a faceface with one Fe(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-65°. In the tenth Fe site, Fe(10) is bonded to one O(24), one O(26), one O(28), one O(29), one O(3), and one O(30) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(9)O6 octahedra, corners with two equivalent Fe(11)O6 octahedra, corners with three equivalent Ti(1)O6 octahedra, corners with three equivalent Ti(8)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Ti(9)O6 octahedra, and  a faceface with one Fe(11)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-66°. In the eleventh Fe site, Fe(11) is bonded to one O(24), one O(26), one O(28), one O(3), one O(30), and one O(5) atom to form FeO6 octahedra that share  a cornercorner with one Ti(3)O6 octahedra, corners with two equivalent Fe(10)O6 octahedra, corners with three equivalent Ti(9)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra,  an edgeedge with one Ti(8)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, and  a faceface with one Fe(10)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-66°. There are thirty inequivalent O sites. In the first O site, O(1) is bonded in a see-saw-like geometry to one Ti(1), one Ti(3), one Fe(1), and one Fe(4) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Ti(2), one Ti(3), one Fe(1), and one Fe(4) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Ti(1), one Fe(1), one Fe(10), and one Fe(11) atom. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Ti(2), one Ti(3), one Fe(2), and one Fe(4) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ti(1), one Ti(3), one Fe(1), and one Fe(11) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ti(2), one Ti(5), one Fe(2), and one Fe(6) atom. In the seventh O site, O(7) is bonded to one Ti(1), one Ti(3), one Fe(1), and one Fe(4) atom to form distorted corner-sharing OTi2Fe2 trigonal pyramids. In the eighth O site, O(8) is bonded to one Ti(5), one Fe(2), one Fe(3), and one Fe(6) atom to form distorted corner-sharing OTiFe3 trigonal pyramids. In the ninth O site, O(9) is bonded to one Ti(2), one Ti(3), one Fe(2), and one Fe(4) atom to form distorted OTi2Fe2 trigonal pyramids that share  a cornercorner with one O(8)TiFe3 trigonal pyramid and corners with two equivalent O(7)Ti2Fe2 trigonal pyramids. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Ti(4), one Ti(5), one Fe(3), and one Fe(6) atom. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one Ti(2), one Ti(5), one Fe(2), and one Fe(4) atom. In the twelfth O site, O(12) is bonded in a distorted see-saw-like geometry to one Ti(4), one Ti(7), one Fe(3), and one Fe(7) atom. In the thirteenth O site, O(13) is bonded in a distorted see-saw-like geometry to one Ti(2), one Ti(5), one Fe(2), and one Fe(6) atom. In the fourteenth O site, O(14) is bonded in a distorted see-saw-like geometry to one Ti(4), one Ti(7), one Fe(5), and one Fe(7) atom. In the fifteenth O site, O(15) is bonded in a distorted see-saw-like geometry to one Ti(4), one Ti(5), one Fe(3), and one Fe(6) atom. In the sixteenth O site, O(16) is bonded in a distorted see-saw-like geometry to one Ti(6), one Ti(7), one Fe(5), and one Fe(7) atom. In the seventeenth O site, O(17) is bonded in a distorted see-saw-like geometry to one Ti(4), one Ti(7), one Fe(3), and one Fe(6) atom. In the eighteenth O site, O(18) is bonded in a distorted see-saw-like geometry to one Ti(6), one Fe(5), one Fe(8), and one Fe(9) atom. In the nineteenth O site, O(19) is bonded in a distorted see-saw-like geometry to one Ti(4), one Ti(7), one Fe(3), and one Fe(7) atom. In the twentieth O site, O(20) is bonded to one Ti(6), one Ti(8), one Fe(8), and one Fe(9) atom to form distorted OTi2Fe2 trigonal pyramids that share  a cornercorner with one O(30)Ti2Fe2 trigonal pyramid, corners with three equivalent O(25)TiFe3 trigonal pyramids,  an edgeedge with one O(29)Ti2Fe2 trigonal pyramid, and  an edgeedge with one O(23)TiFe3 trigonal pyramid. In the twenty-first O site, O(21) is bonded in a distorted see-saw-like geometry to one Ti(6), one Ti(7), one Fe(5), and one Fe(7) atom. In the twenty-second O site, O(22) is bonded in a distorted see-saw-like geometry to one Ti(8), one Ti(9), one Fe(8), and one Fe(9) atom. In the twenty-third O site, O(23) is bonded to one Ti(6), one Fe(5), one Fe(7), and one Fe(8) atom to form distorted OTiFe3 trigonal pyramids that share  a cornercorner with one O(25)TiFe3 trigonal pyramid,  an edgeedge with one O(20)Ti2Fe2 trigonal pyramid, and  an edgeedge with one O(25)TiFe3 trigonal pyramid. In the twenty-fourth O site, O(24) is bonded in a 4-coordinate geometry to one Ti(8), one Ti(9), one Fe(10), and one Fe(11) atom. In the twenty-fifth O site, O(25) is bonded to one Ti(6), one Fe(5), one Fe(8), and one Fe(9) atom to form distorted OTiFe3 trigonal pyramids that share  a cornercorner with one O(29)Ti2Fe2 trigonal pyramid,  a cornercorner with one O(23)TiFe3 trigonal pyramid, corners with three equivalent O(20)Ti2Fe2 trigonal pyramids, and  an edgeedge with one O(23)TiFe3 trigonal pyramid. In the twenty-sixth O site, O(26) is bonded to one Ti(1), one Ti(9), one Fe(10), and one Fe(11) atom to form a mixture of distorted edge and corner-sharing OTi2Fe2 trigonal pyramids. In the twenty-seventh O site, O(27) is bonded in a 4-coordinate geometry to one Ti(8), one Ti(9), one Fe(8), and one Fe(9) atom. In the twenty-eighth O site, O(28) is bonded in a distorted see-saw-like geometry to one Ti(1), one Fe(1), one Fe(10), and one Fe(11) atom. In the twenty-ninth O site, O(29) is bonded to one Ti(8), one Ti(9), one Fe(10), and one Fe(9) atom to form distorted OTi2Fe2 trigonal pyramids that share  a cornercorner with one O(30)Ti2Fe2 trigonal pyramid,  a cornercorner with one O(25)TiFe3 trigonal pyramid,  an edgeedge with one O(20)Ti2Fe2 trigonal pyramid,  an edgeedge with one O(26)Ti2Fe2 trigonal pyramid, and  an edgeedge with one O(30)Ti2Fe2 trigonal pyramid. In the thirtieth O site, O(30) is bonded to one Ti(8), one Ti(9), one Fe(10), and one Fe(11) atom to form a mixture of distorted edge and corner-sharing OTi2Fe2 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ti9Fe11O30
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.159
_cell_length_b   5.560
_cell_length_c   21.312
_cell_angle_alpha   94.807
_cell_angle_beta   89.686
_cell_angle_gamma   117.375
_symmetry_Int_Tables_number   1
_cell_volume   540.579
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ti  Ti0  1  0.189  0.416  0.027  1.0
  Ti  Ti1  1  0.602  0.201  0.229  1.0
  Ti  Ti2  1  0.907  0.806  0.124  1.0
  Ti  Ti3  1  0.299  0.592  0.473  1.0
  Ti  Ti4  1  0.293  0.607  0.332  1.0
  Ti  Ti5  1  0.689  0.386  0.671  1.0
  Ti  Ti6  1  0.704  0.408  0.529  1.0
  Ti  Ti7  1  0.810  0.615  0.832  1.0
  Ti  Ti8  1  0.096  0.180  0.871  1.0
  Fe  Fe9  1  0.487  0.997  0.071  1.0
  Fe  Fe10  1  0.896  0.790  0.269  1.0
  Fe  Fe11  1  0.998  0.001  0.428  1.0
  Fe  Fe12  1  0.206  0.397  0.173  1.0
  Fe  Fe13  1  0.396  0.805  0.630  1.0
  Fe  Fe14  1  0.595  0.195  0.370  1.0
  Fe  Fe15  1  1.000  0.996  0.573  1.0
  Fe  Fe16  1  0.106  0.208  0.728  1.0
  Fe  Fe17  1  0.404  0.797  0.770  1.0
  Fe  Fe18  1  0.503  0.001  0.930  1.0
  Fe  Fe19  1  0.793  0.575  0.969  1.0
  O  O20  1  0.199  0.169  0.088  1.0
  O  O21  1  0.724  0.090  0.156  1.0
  O  O22  1  0.795  0.247  0.009  1.0
  O  O23  1  0.669  0.577  0.187  1.0
  O  O24  1  0.659  0.686  0.055  1.0
  O  O25  1  0.636  0.967  0.284  1.0
  O  O26  1  0.140  0.639  0.110  1.0
  O  O27  1  0.150  0.894  0.347  1.0
  O  O28  1  0.197  0.037  0.213  1.0
  O  O29  1  0.041  0.369  0.385  1.0
  O  O30  1  0.048  0.494  0.256  1.0
  O  O31  1  0.047  0.747  0.492  1.0
  O  O32  1  0.552  0.460  0.306  1.0
  O  O33  1  0.543  0.694  0.544  1.0
  O  O34  1  0.539  0.813  0.411  1.0
  O  O35  1  0.458  0.185  0.587  1.0
  O  O36  1  0.460  0.310  0.456  1.0
  O  O37  1  0.440  0.545  0.693  1.0
  O  O38  1  0.956  0.253  0.507  1.0
  O  O39  1  0.921  0.498  0.751  1.0
  O  O40  1  0.947  0.621  0.614  1.0
  O  O41  1  0.853  0.971  0.792  1.0
  O  O42  1  0.851  0.112  0.653  1.0
  O  O43  1  0.855  0.369  0.883  1.0
  O  O44  1  0.369  0.056  0.709  1.0
  O  O45  1  0.326  0.304  0.950  1.0
  O  O46  1  0.388  0.433  0.818  1.0
  O  O47  1  0.235  0.744  0.992  1.0
  O  O48  1  0.241  0.899  0.850  1.0
  O  O49  1  0.787  0.843  0.907  1.0
[/CIF]
.
The material structure described by Ti9Fe11O30 is Ilmenite-like structured and crystallizes in the triclinic P1 space group. There are nine inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(26), one O(28), one O(3), one O(5), and one O(7) atom to form distorted TiO6 octahedra that share  a cornercorner with one Ti(9)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with three equivalent Ti(3)O6 octahedra, corners with three equivalent Fe(10)O6 octahedra,  an edgeedge with one Fe(4)O6 octahedra, edges with two equivalent Fe(11)O6 octahedra, and  a faceface with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-62°. In the second Ti site, Ti(2) is bonded to one O(11), one O(13), one O(2), one O(4), one O(6), and one O(9) atom to form distorted TiO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with three equivalent Ti(3)O6 octahedra, corners with three equivalent Ti(5)O6 octahedra,  an edgeedge with one Fe(6)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, and  a faceface with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-59°. In the third Ti site, Ti(3) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form distorted TiO6 octahedra that share  a cornercorner with one Fe(11)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra, corners with three equivalent Ti(1)O6 octahedra, corners with three equivalent Ti(2)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and  a faceface with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-62°. In the fourth Ti site, Ti(4) is bonded to one O(10), one O(12), one O(14), one O(15), one O(17), and one O(19) atom to form distorted TiO6 octahedra that share  a cornercorner with one Fe(5)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, corners with three equivalent Fe(6)O6 octahedra, corners with three equivalent Fe(7)O6 octahedra,  an edgeedge with one Ti(5)O6 octahedra, edges with two equivalent Ti(7)O6 octahedra, and  a faceface with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-62°. In the fifth Ti site, Ti(5) is bonded to one O(10), one O(11), one O(13), one O(15), one O(6), and one O(8) atom to form distorted TiO6 octahedra that share  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(6)O6 octahedra, corners with three equivalent Ti(2)O6 octahedra, corners with three equivalent Fe(3)O6 octahedra,  an edgeedge with one Ti(4)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and  a faceface with one Fe(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-64°. In the sixth Ti site, Ti(6) is bonded to one O(16), one O(18), one O(20), one O(21), one O(23), and one O(25) atom to form TiO6 octahedra that share  a cornercorner with one Ti(8)O6 octahedra, corners with two equivalent Fe(5)O6 octahedra, corners with three equivalent Fe(7)O6 octahedra, corners with three equivalent Fe(9)O6 octahedra,  an edgeedge with one Ti(7)O6 octahedra, edges with two equivalent Fe(8)O6 octahedra, and  a faceface with one Fe(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. In the seventh Ti site, Ti(7) is bonded to one O(12), one O(14), one O(16), one O(17), one O(19), and one O(21) atom to form distorted TiO6 octahedra that share  a cornercorner with one Fe(6)O6 octahedra, corners with two equivalent Fe(7)O6 octahedra, corners with three equivalent Fe(3)O6 octahedra, corners with three equivalent Fe(5)O6 octahedra,  an edgeedge with one Ti(6)O6 octahedra, edges with two equivalent Ti(4)O6 octahedra, and  a faceface with one Fe(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-63°. In the eighth Ti site, Ti(8) is bonded to one O(20), one O(22), one O(24), one O(27), one O(29), and one O(30) atom to form distorted TiO6 octahedra that share  a cornercorner with one Ti(6)O6 octahedra, corners with two equivalent Ti(9)O6 octahedra, corners with three equivalent Fe(10)O6 octahedra, corners with three equivalent Fe(8)O6 octahedra,  an edgeedge with one Fe(11)O6 octahedra, edges with two equivalent Fe(9)O6 octahedra, and  a faceface with one Ti(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-54°. In the ninth Ti site, Ti(9) is bonded to one O(22), one O(24), one O(26), one O(27), one O(29), and one O(30) atom to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra, corners with two equivalent Ti(8)O6 octahedra, corners with three equivalent Fe(11)O6 octahedra, corners with three equivalent Fe(9)O6 octahedra,  an edgeedge with one Fe(8)O6 octahedra, edges with two equivalent Fe(10)O6 octahedra, and  a faceface with one Ti(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-57°. There are eleven inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(2), one O(28), one O(3), one O(5), and one O(7) atom to form distorted FeO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with three equivalent Fe(11)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra,  an edgeedge with one Fe(10)O6 octahedra, edges with two equivalent Ti(3)O6 octahedra, and  a faceface with one Ti(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-62°. In the second Fe site, Fe(2) is bonded to one O(11), one O(13), one O(4), one O(6), one O(8), and one O(9) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra, corners with three equivalent Fe(6)O6 octahedra,  an edgeedge with one Ti(3)O6 octahedra, edges with two equivalent Ti(5)O6 octahedra, and  a faceface with one Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-63°. In the third Fe site, Fe(3) is bonded to one O(10), one O(12), one O(15), one O(17), one O(19), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Ti(4)O6 octahedra, corners with three equivalent Ti(5)O6 octahedra, corners with three equivalent Ti(7)O6 octahedra,  an edgeedge with one Fe(7)O6 octahedra, edges with two equivalent Fe(6)O6 octahedra, and  a faceface with one Ti(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-63°. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(11), one O(2), one O(4), one O(7), and one O(9) atom to form distorted FeO6 octahedra that share  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, and  a faceface with one Ti(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-62°. In the fifth Fe site, Fe(5) is bonded to one O(14), one O(16), one O(18), one O(21), one O(23), and one O(25) atom to form distorted FeO6 octahedra that share  a cornercorner with one Ti(4)O6 octahedra, corners with two equivalent Ti(6)O6 octahedra, corners with three equivalent Ti(7)O6 octahedra, corners with three equivalent Fe(8)O6 octahedra,  an edgeedge with one Fe(9)O6 octahedra, edges with two equivalent Fe(7)O6 octahedra, and  a faceface with one Ti(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-62°. In the sixth Fe site, Fe(6) is bonded to one O(10), one O(13), one O(15), one O(17), one O(6), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one Ti(7)O6 octahedra, corners with two equivalent Ti(5)O6 octahedra, corners with three equivalent Ti(4)O6 octahedra, corners with three equivalent Fe(2)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra, edges with two equivalent Fe(3)O6 octahedra, and  a faceface with one Ti(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-64°. In the seventh Fe site, Fe(7) is bonded to one O(12), one O(14), one O(16), one O(19), one O(21), and one O(23) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(8)O6 octahedra, corners with two equivalent Ti(7)O6 octahedra, corners with three equivalent Ti(4)O6 octahedra, corners with three equivalent Ti(6)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and  a faceface with one Ti(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-65°. In the eighth Fe site, Fe(8) is bonded to one O(18), one O(20), one O(22), one O(23), one O(25), and one O(27) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(7)O6 octahedra, corners with two equivalent Fe(9)O6 octahedra, corners with three equivalent Ti(8)O6 octahedra, corners with three equivalent Fe(5)O6 octahedra,  an edgeedge with one Ti(9)O6 octahedra, edges with two equivalent Ti(6)O6 octahedra, and  a faceface with one Fe(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-65°. In the ninth Fe site, Fe(9) is bonded to one O(18), one O(20), one O(22), one O(25), one O(27), and one O(29) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(10)O6 octahedra, corners with two equivalent Fe(8)O6 octahedra, corners with three equivalent Ti(6)O6 octahedra, corners with three equivalent Ti(9)O6 octahedra,  an edgeedge with one Fe(5)O6 octahedra, edges with two equivalent Ti(8)O6 octahedra, and  a faceface with one Fe(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-65°. In the tenth Fe site, Fe(10) is bonded to one O(24), one O(26), one O(28), one O(29), one O(3), and one O(30) atom to form distorted FeO6 octahedra that share  a cornercorner with one Fe(9)O6 octahedra, corners with two equivalent Fe(11)O6 octahedra, corners with three equivalent Ti(1)O6 octahedra, corners with three equivalent Ti(8)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, edges with two equivalent Ti(9)O6 octahedra, and  a faceface with one Fe(11)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-66°. In the eleventh Fe site, Fe(11) is bonded to one O(24), one O(26), one O(28), one O(3), one O(30), and one O(5) atom to form FeO6 octahedra that share  a cornercorner with one Ti(3)O6 octahedra, corners with two equivalent Fe(10)O6 octahedra, corners with three equivalent Ti(9)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra,  an edgeedge with one Ti(8)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, and  a faceface with one Fe(10)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-66°. There are thirty inequivalent O sites. In the first O site, O(1) is bonded in a see-saw-like geometry to one Ti(1), one Ti(3), one Fe(1), and one Fe(4) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Ti(2), one Ti(3), one Fe(1), and one Fe(4) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Ti(1), one Fe(1), one Fe(10), and one Fe(11) atom. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Ti(2), one Ti(3), one Fe(2), and one Fe(4) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ti(1), one Ti(3), one Fe(1), and one Fe(11) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ti(2), one Ti(5), one Fe(2), and one Fe(6) atom. In the seventh O site, O(7) is bonded to one Ti(1), one Ti(3), one Fe(1), and one Fe(4) atom to form distorted corner-sharing OTi2Fe2 trigonal pyramids. In the eighth O site, O(8) is bonded to one Ti(5), one Fe(2), one Fe(3), and one Fe(6) atom to form distorted corner-sharing OTiFe3 trigonal pyramids. In the ninth O site, O(9) is bonded to one Ti(2), one Ti(3), one Fe(2), and one Fe(4) atom to form distorted OTi2Fe2 trigonal pyramids that share  a cornercorner with one O(8)TiFe3 trigonal pyramid and corners with two equivalent O(7)Ti2Fe2 trigonal pyramids. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Ti(4), one Ti(5), one Fe(3), and one Fe(6) atom. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one Ti(2), one Ti(5), one Fe(2), and one Fe(4) atom. In the twelfth O site, O(12) is bonded in a distorted see-saw-like geometry to one Ti(4), one Ti(7), one Fe(3), and one Fe(7) atom. In the thirteenth O site, O(13) is bonded in a distorted see-saw-like geometry to one Ti(2), one Ti(5), one Fe(2), and one Fe(6) atom. In the fourteenth O site, O(14) is bonded in a distorted see-saw-like geometry to one Ti(4), one Ti(7), one Fe(5), and one Fe(7) atom. In the fifteenth O site, O(15) is bonded in a distorted see-saw-like geometry to one Ti(4), one Ti(5), one Fe(3), and one Fe(6) atom. In the sixteenth O site, O(16) is bonded in a distorted see-saw-like geometry to one Ti(6), one Ti(7), one Fe(5), and one Fe(7) atom. In the seventeenth O site, O(17) is bonded in a distorted see-saw-like geometry to one Ti(4), one Ti(7), one Fe(3), and one Fe(6) atom. In the eighteenth O site, O(18) is bonded in a distorted see-saw-like geometry to one Ti(6), one Fe(5), one Fe(8), and one Fe(9) atom. In the nineteenth O site, O(19) is bonded in a distorted see-saw-like geometry to one Ti(4), one Ti(7), one Fe(3), and one Fe(7) atom. In the twentieth O site, O(20) is bonded to one Ti(6), one Ti(8), one Fe(8), and one Fe(9) atom to form distorted OTi2Fe2 trigonal pyramids that share  a cornercorner with one O(30)Ti2Fe2 trigonal pyramid, corners with three equivalent O(25)TiFe3 trigonal pyramids,  an edgeedge with one O(29)Ti2Fe2 trigonal pyramid, and  an edgeedge with one O(23)TiFe3 trigonal pyramid. In the twenty-first O site, O(21) is bonded in a distorted see-saw-like geometry to one Ti(6), one Ti(7), one Fe(5), and one Fe(7) atom. In the twenty-second O site, O(22) is bonded in a distorted see-saw-like geometry to one Ti(8), one Ti(9), one Fe(8), and one Fe(9) atom. In the twenty-third O site, O(23) is bonded to one Ti(6), one Fe(5), one Fe(7), and one Fe(8) atom to form distorted OTiFe3 trigonal pyramids that share  a cornercorner with one O(25)TiFe3 trigonal pyramid,  an edgeedge with one O(20)Ti2Fe2 trigonal pyramid, and  an edgeedge with one O(25)TiFe3 trigonal pyramid. In the twenty-fourth O site, O(24) is bonded in a 4-coordinate geometry to one Ti(8), one Ti(9), one Fe(10), and one Fe(11) atom. In the twenty-fifth O site, O(25) is bonded to one Ti(6), one Fe(5), one Fe(8), and one Fe(9) atom to form distorted OTiFe3 trigonal pyramids that share  a cornercorner with one O(29)Ti2Fe2 trigonal pyramid,  a cornercorner with one O(23)TiFe3 trigonal pyramid, corners with three equivalent O(20)Ti2Fe2 trigonal pyramids, and  an edgeedge with one O(23)TiFe3 trigonal pyramid. In the twenty-sixth O site, O(26) is bonded to one Ti(1), one Ti(9), one Fe(10), and one Fe(11) atom to form a mixture of distorted edge and corner-sharing OTi2Fe2 trigonal pyramids. In the twenty-seventh O site, O(27) is bonded in a 4-coordinate geometry to one Ti(8), one Ti(9), one Fe(8), and one Fe(9) atom. In the twenty-eighth O site, O(28) is bonded in a distorted see-saw-like geometry to one Ti(1), one Fe(1), one Fe(10), and one Fe(11) atom. In the twenty-ninth O site, O(29) is bonded to one Ti(8), one Ti(9), one Fe(10), and one Fe(9) atom to form distorted OTi2Fe2 trigonal pyramids that share  a cornercorner with one O(30)Ti2Fe2 trigonal pyramid,  a cornercorner with one O(25)TiFe3 trigonal pyramid,  an edgeedge with one O(20)Ti2Fe2 trigonal pyramid,  an edgeedge with one O(26)Ti2Fe2 trigonal pyramid, and  an edgeedge with one O(30)Ti2Fe2 trigonal pyramid. In the thirtieth O site, O(30) is bonded to one Ti(8), one Ti(9), one Fe(10), and one Fe(11) atom to form a mixture of distorted edge and corner-sharing OTi2Fe2 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ti9Fe11O30
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.159
_cell_length_b   5.560
_cell_length_c   21.312
_cell_angle_alpha   94.807
_cell_angle_beta   89.686
_cell_angle_gamma   117.375
_symmetry_Int_Tables_number   1
_cell_volume   540.579
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ti  Ti0  1  0.189  0.416  0.027  1.0
  Ti  Ti1  1  0.602  0.201  0.229  1.0
  Ti  Ti2  1  0.907  0.806  0.124  1.0
  Ti  Ti3  1  0.299  0.592  0.473  1.0
  Ti  Ti4  1  0.293  0.607  0.332  1.0
  Ti  Ti5  1  0.689  0.386  0.671  1.0
  Ti  Ti6  1  0.704  0.408  0.529  1.0
  Ti  Ti7  1  0.810  0.615  0.832  1.0
  Ti  Ti8  1  0.096  0.180  0.871  1.0
  Fe  Fe9  1  0.487  0.997  0.071  1.0
  Fe  Fe10  1  0.896  0.790  0.269  1.0
  Fe  Fe11  1  0.998  0.001  0.428  1.0
  Fe  Fe12  1  0.206  0.397  0.173  1.0
  Fe  Fe13  1  0.396  0.805  0.630  1.0
  Fe  Fe14  1  0.595  0.195  0.370  1.0
  Fe  Fe15  1  1.000  0.996  0.573  1.0
  Fe  Fe16  1  0.106  0.208  0.728  1.0
  Fe  Fe17  1  0.404  0.797  0.770  1.0
  Fe  Fe18  1  0.503  0.001  0.930  1.0
  Fe  Fe19  1  0.793  0.575  0.969  1.0
  O  O20  1  0.199  0.169  0.088  1.0
  O  O21  1  0.724  0.090  0.156  1.0
  O  O22  1  0.795  0.247  0.009  1.0
  O  O23  1  0.669  0.577  0.187  1.0
  O  O24  1  0.659  0.686  0.055  1.0
  O  O25  1  0.636  0.967  0.284  1.0
  O  O26  1  0.140  0.639  0.110  1.0
  O  O27  1  0.150  0.894  0.347  1.0
  O  O28  1  0.197  0.037  0.213  1.0
  O  O29  1  0.041  0.369  0.385  1.0
  O  O30  1  0.048  0.494  0.256  1.0
  O  O31  1  0.047  0.747  0.492  1.0
  O  O32  1  0.552  0.460  0.306  1.0
  O  O33  1  0.543  0.694  0.544  1.0
  O  O34  1  0.539  0.813  0.411  1.0
  O  O35  1  0.458  0.185  0.587  1.0
  O  O36  1  0.460  0.310  0.456  1.0
  O  O37  1  0.440  0.545  0.693  1.0
  O  O38  1  0.956  0.253  0.507  1.0
  O  O39  1  0.921  0.498  0.751  1.0
  O  O40  1  0.947  0.621  0.614  1.0
  O  O41  1  0.853  0.971  0.792  1.0
  O  O42  1  0.851  0.112  0.653  1.0
  O  O43  1  0.855  0.369  0.883  1.0
  O  O44  1  0.369  0.056  0.709  1.0
  O  O45  1  0.326  0.304  0.950  1.0
  O  O46  1  0.388  0.433  0.818  1.0
  O  O47  1  0.235  0.744  0.992  1.0
  O  O48  1  0.241  0.899  0.850  1.0
  O  O49  1  0.787  0.843  0.907  1.0
[/CIF]
.