The material described by Ti9O17 crystallizes in the triclinic P-1 space group. There are ten inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(11), two equivalent O(12), and two equivalent O(13) atoms to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the second Ti site, Ti(2) is bonded to two equivalent O(10), two equivalent O(11), and two equivalent O(14) atoms to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. In the third Ti site, Ti(3) is bonded to one O(2), one O(3), one O(4), one O(6), and two equivalent O(1) atoms to form a mixture of distorted edge, face, and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 42-55°. In the fourth Ti site, Ti(4) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form a mixture of distorted edge, face, and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. In the fifth Ti site, Ti(5) is bonded to one O(2), one O(3), one O(4), one O(7), one O(8), and one O(9) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 42-61°. In the sixth Ti site, Ti(6) is bonded to one O(1), one O(17), one O(4), one O(5), one O(6), and one O(7) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. In the seventh Ti site, Ti(7) is bonded to one O(13), one O(16), one O(17), one O(5), one O(8), and one O(9) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 43-53°. In the eighth Ti site, Ti(8) is bonded to one O(14), one O(15), one O(16), one O(6), one O(7), and one O(9) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 46-54°. In the ninth Ti site, Ti(9) is bonded to one O(10), one O(11), one O(12), one O(15), one O(16), and one O(17) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 48-53°. In the tenth Ti site, Ti(10) is bonded to one O(10), one O(12), one O(13), one O(14), one O(15), and one O(8) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 46-52°. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded to one Ti(4), one Ti(6), and two equivalent Ti(3) atoms to form a mixture of distorted edge and corner-sharing OTi4 trigonal pyramids. In the second O site, O(2) is bonded in a trigonal planar geometry to one Ti(3), one Ti(4), and one Ti(5) atom. In the third O site, O(3) is bonded to one Ti(3), one Ti(5), and two equivalent Ti(4) atoms to form a mixture of distorted edge and corner-sharing OTi4 trigonal pyramids. In the fourth O site, O(4) is bonded to one Ti(3), one Ti(4), one Ti(5), and one Ti(6) atom to form distorted edge-sharing OTi4 trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ti(4), one Ti(6), and one Ti(7) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Ti(3), one Ti(6), and one Ti(8) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Ti(5), one Ti(6), and one Ti(8) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Ti(10), one Ti(5), and one Ti(7) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ti(5), one Ti(7), and one Ti(8) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Ti(10), one Ti(2), and one Ti(9) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(2), and one Ti(9) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(10), and one Ti(9) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(10), and one Ti(7) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Ti(10), one Ti(2), and one Ti(8) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Ti(10), one Ti(8), and one Ti(9) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Ti(7), one Ti(8), and one Ti(9) atom. In the seventeenth O site, O(17) is bonded in a trigonal planar geometry to one Ti(6), one Ti(7), and one Ti(9) atom. is represented by the CIF card [CIF]
data_Ti9O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.527
_cell_length_b   7.134
_cell_length_c   14.775
_cell_angle_alpha   96.702
_cell_angle_beta   90.644
_cell_angle_gamma   108.441
_symmetry_Int_Tables_number   1
_cell_volume   548.242
_cell_formula_units_Z   2
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  0.000  0.500  1.000  1.0
  Ti  Ti1  1  1.000  1.000  1.000  1.0
  Ti  Ti2  1  0.297  0.809  0.540  1.0
  Ti  Ti3  1  0.703  0.191  0.460  1.0
  Ti  Ti4  1  0.306  0.312  0.545  1.0
  Ti  Ti5  1  0.694  0.688  0.455  1.0
  Ti  Ti6  1  0.742  0.595  0.658  1.0
  Ti  Ti7  1  0.258  0.405  0.342  1.0
  Ti  Ti8  1  0.747  0.093  0.660  1.0
  Ti  Ti9  1  0.253  0.907  0.340  1.0
  Ti  Ti10  1  0.168  0.405  0.774  1.0
  Ti  Ti11  1  0.832  0.595  0.226  1.0
  Ti  Ti12  1  0.162  0.900  0.772  1.0
  Ti  Ti13  1  0.838  0.100  0.228  1.0
  Ti  Ti14  1  0.579  0.202  0.886  1.0
  Ti  Ti15  1  0.421  0.798  0.114  1.0
  Ti  Ti16  1  0.589  0.705  0.886  1.0
  Ti  Ti17  1  0.411  0.295  0.114  1.0
  O  O18  1  0.705  0.961  0.522  1.0
  O  O19  1  0.295  0.039  0.478  1.0
  O  O20  1  0.954  0.677  0.543  1.0
  O  O21  1  0.046  0.323  0.457  1.0
  O  O22  1  0.457  0.607  0.570  1.0
  O  O23  1  0.543  0.393  0.430  1.0
  O  O24  1  0.648  0.309  0.594  1.0
  O  O25  1  0.352  0.691  0.406  1.0
  O  O26  1  0.103  0.260  0.642  1.0
  O  O27  1  0.897  0.740  0.358  1.0
  O  O28  1  0.384  0.949  0.658  1.0
  O  O29  1  0.616  0.051  0.342  1.0
  O  O30  1  0.861  0.887  0.692  1.0
  O  O31  1  0.139  0.113  0.308  1.0
  O  O32  1  0.520  0.558  0.756  1.0
  O  O33  1  0.480  0.442  0.244  1.0
  O  O34  1  0.049  0.613  0.728  1.0
  O  O35  1  0.951  0.387  0.272  1.0
  O  O36  1  0.640  0.834  0.010  1.0
  O  O37  1  0.360  0.166  0.990  1.0
  O  O38  1  0.124  0.787  0.038  1.0
  O  O39  1  0.876  0.213  0.962  1.0
  O  O40  1  0.293  0.512  0.079  1.0
  O  O41  1  0.707  0.488  0.921  1.0
  O  O42  1  0.775  0.465  0.106  1.0
  O  O43  1  0.225  0.535  0.894  1.0
  O  O44  1  0.059  0.136  0.127  1.0
  O  O45  1  0.941  0.864  0.873  1.0
  O  O46  1  0.540  0.087  0.155  1.0
  O  O47  1  0.460  0.913  0.845  1.0
  O  O48  1  0.716  0.813  0.194  1.0
  O  O49  1  0.284  0.187  0.806  1.0
  O  O50  1  0.196  0.761  0.224  1.0
  O  O51  1  0.804  0.239  0.776  1.0
[/CIF]
.
The material described by Ti9O17 crystallizes in the triclinic P-1 space group. There are ten inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(11), two equivalent O(12), and two equivalent O(13) atoms to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the second Ti site, Ti(2) is bonded to two equivalent O(10), two equivalent O(11), and two equivalent O(14) atoms to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. In the third Ti site, Ti(3) is bonded to one O(2), one O(3), one O(4), one O(6), and two equivalent O(1) atoms to form a mixture of distorted edge, face, and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 42-55°. In the fourth Ti site, Ti(4) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form a mixture of distorted edge, face, and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. In the fifth Ti site, Ti(5) is bonded to one O(2), one O(3), one O(4), one O(7), one O(8), and one O(9) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 42-61°. In the sixth Ti site, Ti(6) is bonded to one O(1), one O(17), one O(4), one O(5), one O(6), and one O(7) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. In the seventh Ti site, Ti(7) is bonded to one O(13), one O(16), one O(17), one O(5), one O(8), and one O(9) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 43-53°. In the eighth Ti site, Ti(8) is bonded to one O(14), one O(15), one O(16), one O(6), one O(7), and one O(9) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 46-54°. In the ninth Ti site, Ti(9) is bonded to one O(10), one O(11), one O(12), one O(15), one O(16), and one O(17) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 48-53°. In the tenth Ti site, Ti(10) is bonded to one O(10), one O(12), one O(13), one O(14), one O(15), and one O(8) atom to form a mixture of edge and corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 46-52°. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded to one Ti(4), one Ti(6), and two equivalent Ti(3) atoms to form a mixture of distorted edge and corner-sharing OTi4 trigonal pyramids. In the second O site, O(2) is bonded in a trigonal planar geometry to one Ti(3), one Ti(4), and one Ti(5) atom. In the third O site, O(3) is bonded to one Ti(3), one Ti(5), and two equivalent Ti(4) atoms to form a mixture of distorted edge and corner-sharing OTi4 trigonal pyramids. In the fourth O site, O(4) is bonded to one Ti(3), one Ti(4), one Ti(5), and one Ti(6) atom to form distorted edge-sharing OTi4 trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ti(4), one Ti(6), and one Ti(7) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Ti(3), one Ti(6), and one Ti(8) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Ti(5), one Ti(6), and one Ti(8) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Ti(10), one Ti(5), and one Ti(7) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ti(5), one Ti(7), and one Ti(8) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Ti(10), one Ti(2), and one Ti(9) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(2), and one Ti(9) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(10), and one Ti(9) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(10), and one Ti(7) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Ti(10), one Ti(2), and one Ti(8) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Ti(10), one Ti(8), and one Ti(9) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Ti(7), one Ti(8), and one Ti(9) atom. In the seventeenth O site, O(17) is bonded in a trigonal planar geometry to one Ti(6), one Ti(7), and one Ti(9) atom. is represented by the CIF card [CIF]
data_Ti9O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.527
_cell_length_b   7.134
_cell_length_c   14.775
_cell_angle_alpha   96.702
_cell_angle_beta   90.644
_cell_angle_gamma   108.441
_symmetry_Int_Tables_number   1
_cell_volume   548.242
_cell_formula_units_Z   2
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  0.000  0.500  1.000  1.0
  Ti  Ti1  1  1.000  1.000  1.000  1.0
  Ti  Ti2  1  0.297  0.809  0.540  1.0
  Ti  Ti3  1  0.703  0.191  0.460  1.0
  Ti  Ti4  1  0.306  0.312  0.545  1.0
  Ti  Ti5  1  0.694  0.688  0.455  1.0
  Ti  Ti6  1  0.742  0.595  0.658  1.0
  Ti  Ti7  1  0.258  0.405  0.342  1.0
  Ti  Ti8  1  0.747  0.093  0.660  1.0
  Ti  Ti9  1  0.253  0.907  0.340  1.0
  Ti  Ti10  1  0.168  0.405  0.774  1.0
  Ti  Ti11  1  0.832  0.595  0.226  1.0
  Ti  Ti12  1  0.162  0.900  0.772  1.0
  Ti  Ti13  1  0.838  0.100  0.228  1.0
  Ti  Ti14  1  0.579  0.202  0.886  1.0
  Ti  Ti15  1  0.421  0.798  0.114  1.0
  Ti  Ti16  1  0.589  0.705  0.886  1.0
  Ti  Ti17  1  0.411  0.295  0.114  1.0
  O  O18  1  0.705  0.961  0.522  1.0
  O  O19  1  0.295  0.039  0.478  1.0
  O  O20  1  0.954  0.677  0.543  1.0
  O  O21  1  0.046  0.323  0.457  1.0
  O  O22  1  0.457  0.607  0.570  1.0
  O  O23  1  0.543  0.393  0.430  1.0
  O  O24  1  0.648  0.309  0.594  1.0
  O  O25  1  0.352  0.691  0.406  1.0
  O  O26  1  0.103  0.260  0.642  1.0
  O  O27  1  0.897  0.740  0.358  1.0
  O  O28  1  0.384  0.949  0.658  1.0
  O  O29  1  0.616  0.051  0.342  1.0
  O  O30  1  0.861  0.887  0.692  1.0
  O  O31  1  0.139  0.113  0.308  1.0
  O  O32  1  0.520  0.558  0.756  1.0
  O  O33  1  0.480  0.442  0.244  1.0
  O  O34  1  0.049  0.613  0.728  1.0
  O  O35  1  0.951  0.387  0.272  1.0
  O  O36  1  0.640  0.834  0.010  1.0
  O  O37  1  0.360  0.166  0.990  1.0
  O  O38  1  0.124  0.787  0.038  1.0
  O  O39  1  0.876  0.213  0.962  1.0
  O  O40  1  0.293  0.512  0.079  1.0
  O  O41  1  0.707  0.488  0.921  1.0
  O  O42  1  0.775  0.465  0.106  1.0
  O  O43  1  0.225  0.535  0.894  1.0
  O  O44  1  0.059  0.136  0.127  1.0
  O  O45  1  0.941  0.864  0.873  1.0
  O  O46  1  0.540  0.087  0.155  1.0
  O  O47  1  0.460  0.913  0.845  1.0
  O  O48  1  0.716  0.813  0.194  1.0
  O  O49  1  0.284  0.187  0.806  1.0
  O  O50  1  0.196  0.761  0.224  1.0
  O  O51  1  0.804  0.239  0.776  1.0
[/CIF]
.