The material described by Tm10Ti6O27 crystallizes in the monoclinic Cm space group. There are seven inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to one O(1), one O(12), one O(13), one O(16), one O(19), one O(3), and one O(9) atom to form distorted TmO7 pentagonal bipyramids that share  a cornercorner with one Tm(3)O6 octahedra,  a cornercorner with one Tm(1)O7 pentagonal bipyramid, and  an edgeedge with one Tm(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 71°. In the second Tm site, Tm(2) is bonded in a 7-coordinate geometry to one O(1), one O(15), one O(4), two equivalent O(12), and two equivalent O(2) atoms. In the third Tm site, Tm(3) is bonded to one O(10), one O(6), two equivalent O(12), and two equivalent O(2) atoms to form distorted corner-sharing TmO6 octahedra. In the fourth Tm site, Tm(4) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(2), one O(3), one O(4), one O(6), and one O(8) atom. In the fifth Tm site, Tm(5) is bonded in a 7-coordinate geometry to one O(18), one O(19), one O(7), two equivalent O(17), and two equivalent O(9) atoms. In the sixth Tm site, Tm(6) is bonded in a 3-coordinate geometry to one O(15), two equivalent O(11), and two equivalent O(8) atoms. In the seventh Tm site, Tm(7) is bonded in a 6-coordinate geometry to one O(11), one O(13), one O(14), one O(17), one O(18), and one O(9) atom. There are five inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 6-coordinate geometry to one O(16), one O(6), two equivalent O(13), and two equivalent O(3) atoms. In the second Ti site, Ti(2) is bonded in a 7-coordinate geometry to one O(11), one O(15), one O(17), one O(2), one O(5), one O(7), and one O(8) atom. In the third Ti site, Ti(3) is bonded in a 5-coordinate geometry to one O(10), one O(14), one O(5), and two equivalent O(11) atoms. In the fourth Ti site, Ti(4) is bonded in a 7-coordinate geometry to one O(14), one O(16), one O(5), two equivalent O(17), and two equivalent O(9) atoms. In the fifth Ti site, Ti(5) is bonded in a 6-coordinate geometry to one O(1), one O(18), one O(19), one O(4), and two equivalent O(3) atoms. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded to one Tm(2), two equivalent Tm(1), and one Ti(5) atom to form distorted OTm3Ti trigonal pyramids that share  a cornercorner with one O(15)Tm2Ti2 tetrahedra,  a cornercorner with one O(18)Tm3Ti tetrahedra, corners with three equivalent O(19)Tm3Ti tetrahedra, corners with four equivalent O(3)Tm2Ti2 tetrahedra, corners with two equivalent O(9)Tm3Ti trigonal pyramids,  an edgeedge with one O(16)Tm2Ti2 tetrahedra,  an edgeedge with one O(4)Tm3Ti tetrahedra, and edges with two equivalent O(12)Tm4 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Tm(2), one Tm(3), one Tm(4), and one Ti(2) atom. In the third O site, O(3) is bonded to one Tm(1), one Tm(4), one Ti(1), and one Ti(5) atom to form distorted OTm2Ti2 tetrahedra that share  a cornercorner with one O(10)Tm3Ti tetrahedra,  a cornercorner with one O(18)Tm3Ti tetrahedra, corners with two equivalent O(3)Tm2Ti2 tetrahedra,  a cornercorner with one O(9)Tm3Ti trigonal pyramid, corners with two equivalent O(1)Tm3Ti trigonal pyramids,  an edgeedge with one O(16)Tm2Ti2 tetrahedra,  an edgeedge with one O(19)Tm3Ti tetrahedra,  an edgeedge with one O(4)Tm3Ti tetrahedra,  an edgeedge with one O(6)Tm3Ti tetrahedra, and  an edgeedge with one O(12)Tm4 tetrahedra. In the fourth O site, O(4) is bonded to one Tm(2), two equivalent Tm(4), and one Ti(5) atom to form OTm3Ti tetrahedra that share  a cornercorner with one O(15)Tm2Ti2 tetrahedra,  a cornercorner with one O(18)Tm3Ti tetrahedra,  a cornercorner with one O(19)Tm3Ti tetrahedra, corners with two equivalent O(6)Tm3Ti tetrahedra, corners with four equivalent O(12)Tm4 tetrahedra,  an edgeedge with one O(10)Tm3Ti tetrahedra, edges with two equivalent O(3)Tm2Ti2 tetrahedra, and  an edgeedge with one O(1)Tm3Ti trigonal pyramid. In the fifth O site, O(5) is bonded to one Ti(3), one Ti(4), and two equivalent Ti(2) atoms to form OTi4 trigonal pyramids that share  a cornercorner with one O(16)Tm2Ti2 tetrahedra,  a cornercorner with one O(10)Tm3Ti tetrahedra, corners with two equivalent O(9)Tm3Ti trigonal pyramids,  an edgeedge with one O(14)Tm2Ti2 tetrahedra, and  an edgeedge with one O(15)Tm2Ti2 tetrahedra. In the sixth O site, O(6) is bonded to one Tm(3), two equivalent Tm(4), and one Ti(1) atom to form OTm3Ti tetrahedra that share  a cornercorner with one O(16)Tm2Ti2 tetrahedra, corners with two equivalent O(4)Tm3Ti tetrahedra, corners with three equivalent O(10)Tm3Ti tetrahedra, corners with four equivalent O(12)Tm4 tetrahedra, and edges with two equivalent O(3)Tm2Ti2 tetrahedra. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Tm(5) and two equivalent Ti(2) atoms. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Tm(4), one Tm(6), and one Ti(2) atom. In the ninth O site, O(9) is bonded to one Tm(1), one Tm(5), one Tm(7), and one Ti(4) atom to form distorted OTm3Ti trigonal pyramids that share  a cornercorner with one O(3)Tm2Ti2 tetrahedra,  a cornercorner with one O(12)Tm4 tetrahedra, corners with two equivalent O(18)Tm3Ti tetrahedra,  a cornercorner with one O(5)Ti4 trigonal pyramid,  a cornercorner with one O(1)Tm3Ti trigonal pyramid, corners with two equivalent O(9)Tm3Ti trigonal pyramids,  an edgeedge with one O(14)Tm2Ti2 tetrahedra,  an edgeedge with one O(16)Tm2Ti2 tetrahedra, and  an edgeedge with one O(19)Tm3Ti tetrahedra. In the tenth O site, O(10) is bonded to one Tm(3), two equivalent Tm(4), and one Ti(3) atom to form distorted OTm3Ti tetrahedra that share  a cornercorner with one O(14)Tm2Ti2 tetrahedra, corners with two equivalent O(3)Tm2Ti2 tetrahedra, corners with three equivalent O(6)Tm3Ti tetrahedra,  a cornercorner with one O(5)Ti4 trigonal pyramid,  an edgeedge with one O(4)Tm3Ti tetrahedra, and edges with two equivalent O(12)Tm4 tetrahedra. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Tm(6), one Tm(7), one Ti(2), and one Ti(3) atom. In the twelfth O site, O(12) is bonded to one Tm(1), one Tm(2), one Tm(3), and one Tm(4) atom to form OTm4 tetrahedra that share  a cornercorner with one O(15)Tm2Ti2 tetrahedra,  a cornercorner with one O(16)Tm2Ti2 tetrahedra,  a cornercorner with one O(19)Tm3Ti tetrahedra, corners with two equivalent O(4)Tm3Ti tetrahedra, corners with two equivalent O(6)Tm3Ti tetrahedra, corners with two equivalent O(12)Tm4 tetrahedra,  a cornercorner with one O(9)Tm3Ti trigonal pyramid,  an edgeedge with one O(3)Tm2Ti2 tetrahedra,  an edgeedge with one O(10)Tm3Ti tetrahedra, and  an edgeedge with one O(1)Tm3Ti trigonal pyramid. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Tm(1), one Tm(7), and one Ti(1) atom. In the fourteenth O site, O(14) is bonded to two equivalent Tm(7), one Ti(3), and one Ti(4) atom to form OTm2Ti2 tetrahedra that share  a cornercorner with one O(16)Tm2Ti2 tetrahedra,  a cornercorner with one O(10)Tm3Ti tetrahedra,  an edgeedge with one O(18)Tm3Ti tetrahedra,  an edgeedge with one O(5)Ti4 trigonal pyramid, and edges with two equivalent O(9)Tm3Ti trigonal pyramids. In the fifteenth O site, O(15) is bonded to one Tm(2), one Tm(6), and two equivalent Ti(2) atoms to form OTm2Ti2 tetrahedra that share  a cornercorner with one O(4)Tm3Ti tetrahedra, corners with two equivalent O(12)Tm4 tetrahedra,  a cornercorner with one O(1)Tm3Ti trigonal pyramid, and  an edgeedge with one O(5)Ti4 trigonal pyramid. In the sixteenth O site, O(16) is bonded to two equivalent Tm(1), one Ti(1), and one Ti(4) atom to form OTm2Ti2 tetrahedra that share  a cornercorner with one O(14)Tm2Ti2 tetrahedra,  a cornercorner with one O(6)Tm3Ti tetrahedra, corners with two equivalent O(19)Tm3Ti tetrahedra, corners with two equivalent O(12)Tm4 tetrahedra,  a cornercorner with one O(5)Ti4 trigonal pyramid, edges with two equivalent O(3)Tm2Ti2 tetrahedra,  an edgeedge with one O(1)Tm3Ti trigonal pyramid, and edges with two equivalent O(9)Tm3Ti trigonal pyramids. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Tm(5), one Tm(7), one Ti(2), and one Ti(4) atom. In the eighteenth O site, O(18) is bonded to one Tm(5), two equivalent Tm(7), and one Ti(5) atom to form OTm3Ti tetrahedra that share  a cornercorner with one O(4)Tm3Ti tetrahedra, corners with two equivalent O(3)Tm2Ti2 tetrahedra,  a cornercorner with one O(1)Tm3Ti trigonal pyramid, corners with four equivalent O(9)Tm3Ti trigonal pyramids,  an edgeedge with one O(14)Tm2Ti2 tetrahedra, and  an edgeedge with one O(19)Tm3Ti tetrahedra. In the nineteenth O site, O(19) is bonded to one Tm(5), two equivalent Tm(1), and one Ti(5) atom to form OTm3Ti tetrahedra that share  a cornercorner with one O(4)Tm3Ti tetrahedra, corners with two equivalent O(16)Tm2Ti2 tetrahedra, corners with two equivalent O(12)Tm4 tetrahedra, corners with three equivalent O(1)Tm3Ti trigonal pyramids,  an edgeedge with one O(18)Tm3Ti tetrahedra, edges with two equivalent O(3)Tm2Ti2 tetrahedra, and edges with two equivalent O(9)Tm3Ti trigonal pyramids. is represented by the CIF card [CIF]
data_Tm10Ti6O27
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.363
_cell_length_b   7.363
_cell_length_c   12.084
_cell_angle_alpha   71.318
_cell_angle_beta   71.318
_cell_angle_gamma   61.422
_symmetry_Int_Tables_number   1
_cell_volume   533.874
_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
  Tm  Tm0  1  0.983  0.510  0.982  1.0
  Tm  Tm1  1  0.510  0.983  0.982  1.0
  Tm  Tm2  1  0.753  0.753  0.246  1.0
  Tm  Tm3  1  0.241  0.241  0.249  1.0
  Tm  Tm4  1  0.234  0.750  0.249  1.0
  Tm  Tm5  1  0.232  0.232  0.759  1.0
  Tm  Tm6  1  0.494  0.494  0.519  1.0
  Tm  Tm7  1  0.750  0.234  0.249  1.0
  Tm  Tm8  1  0.778  0.220  0.753  1.0
  Tm  Tm9  1  0.220  0.778  0.753  1.0
  Ti  Ti10  1  0.503  0.503  0.997  1.0
  Ti  Ti11  1  0.516  0.004  0.500  1.0
  Ti  Ti12  1  0.004  0.516  0.500  1.0
  Ti  Ti13  1  0.003  0.003  0.509  1.0
  Ti  Ti14  1  0.761  0.761  0.721  1.0
  Ti  Ti15  1  0.007  0.007  0.016  1.0
  O  O16  1  0.848  0.848  0.029  1.0
  O  O17  1  0.511  0.070  0.340  1.0
  O  O18  1  0.070  0.511  0.340  1.0
  O  O19  1  0.818  0.285  0.047  1.0
  O  O20  1  0.932  0.932  0.201  1.0
  O  O21  1  0.833  0.833  0.533  1.0
  O  O22  1  0.438  0.438  0.170  1.0
  O  O23  1  0.261  0.261  0.565  1.0
  O  O24  1  0.223  0.637  0.445  1.0
  O  O25  1  0.112  0.546  0.772  1.0
  O  O26  1  0.285  0.818  0.047  1.0
  O  O27  1  0.059  0.059  0.341  1.0
  O  O28  1  0.274  0.888  0.544  1.0
  O  O29  1  0.546  0.112  0.772  1.0
  O  O30  1  0.447  0.917  0.184  1.0
  O  O31  1  0.637  0.223  0.445  1.0
  O  O32  1  0.594  0.265  0.934  1.0
  O  O33  1  0.922  0.922  0.691  1.0
  O  O34  1  0.888  0.274  0.544  1.0
  O  O35  1  0.674  0.674  0.448  1.0
  O  O36  1  0.917  0.447  0.184  1.0
  O  O37  1  0.676  0.676  0.903  1.0
  O  O38  1  0.857  0.492  0.687  1.0
  O  O39  1  0.048  0.048  0.837  1.0
  O  O40  1  0.265  0.594  0.934  1.0
  O  O41  1  0.196  0.196  0.956  1.0
  O  O42  1  0.492  0.857  0.687  1.0
[/CIF]
.
The material described by Tm10Ti6O27 crystallizes in the monoclinic Cm space group. There are seven inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to one O(1), one O(12), one O(13), one O(16), one O(19), one O(3), and one O(9) atom to form distorted TmO7 pentagonal bipyramids that share  a cornercorner with one Tm(3)O6 octahedra,  a cornercorner with one Tm(1)O7 pentagonal bipyramid, and  an edgeedge with one Tm(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 71°. In the second Tm site, Tm(2) is bonded in a 7-coordinate geometry to one O(1), one O(15), one O(4), two equivalent O(12), and two equivalent O(2) atoms. In the third Tm site, Tm(3) is bonded to one O(10), one O(6), two equivalent O(12), and two equivalent O(2) atoms to form distorted corner-sharing TmO6 octahedra. In the fourth Tm site, Tm(4) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(2), one O(3), one O(4), one O(6), and one O(8) atom. In the fifth Tm site, Tm(5) is bonded in a 7-coordinate geometry to one O(18), one O(19), one O(7), two equivalent O(17), and two equivalent O(9) atoms. In the sixth Tm site, Tm(6) is bonded in a 3-coordinate geometry to one O(15), two equivalent O(11), and two equivalent O(8) atoms. In the seventh Tm site, Tm(7) is bonded in a 6-coordinate geometry to one O(11), one O(13), one O(14), one O(17), one O(18), and one O(9) atom. There are five inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 6-coordinate geometry to one O(16), one O(6), two equivalent O(13), and two equivalent O(3) atoms. In the second Ti site, Ti(2) is bonded in a 7-coordinate geometry to one O(11), one O(15), one O(17), one O(2), one O(5), one O(7), and one O(8) atom. In the third Ti site, Ti(3) is bonded in a 5-coordinate geometry to one O(10), one O(14), one O(5), and two equivalent O(11) atoms. In the fourth Ti site, Ti(4) is bonded in a 7-coordinate geometry to one O(14), one O(16), one O(5), two equivalent O(17), and two equivalent O(9) atoms. In the fifth Ti site, Ti(5) is bonded in a 6-coordinate geometry to one O(1), one O(18), one O(19), one O(4), and two equivalent O(3) atoms. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded to one Tm(2), two equivalent Tm(1), and one Ti(5) atom to form distorted OTm3Ti trigonal pyramids that share  a cornercorner with one O(15)Tm2Ti2 tetrahedra,  a cornercorner with one O(18)Tm3Ti tetrahedra, corners with three equivalent O(19)Tm3Ti tetrahedra, corners with four equivalent O(3)Tm2Ti2 tetrahedra, corners with two equivalent O(9)Tm3Ti trigonal pyramids,  an edgeedge with one O(16)Tm2Ti2 tetrahedra,  an edgeedge with one O(4)Tm3Ti tetrahedra, and edges with two equivalent O(12)Tm4 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Tm(2), one Tm(3), one Tm(4), and one Ti(2) atom. In the third O site, O(3) is bonded to one Tm(1), one Tm(4), one Ti(1), and one Ti(5) atom to form distorted OTm2Ti2 tetrahedra that share  a cornercorner with one O(10)Tm3Ti tetrahedra,  a cornercorner with one O(18)Tm3Ti tetrahedra, corners with two equivalent O(3)Tm2Ti2 tetrahedra,  a cornercorner with one O(9)Tm3Ti trigonal pyramid, corners with two equivalent O(1)Tm3Ti trigonal pyramids,  an edgeedge with one O(16)Tm2Ti2 tetrahedra,  an edgeedge with one O(19)Tm3Ti tetrahedra,  an edgeedge with one O(4)Tm3Ti tetrahedra,  an edgeedge with one O(6)Tm3Ti tetrahedra, and  an edgeedge with one O(12)Tm4 tetrahedra. In the fourth O site, O(4) is bonded to one Tm(2), two equivalent Tm(4), and one Ti(5) atom to form OTm3Ti tetrahedra that share  a cornercorner with one O(15)Tm2Ti2 tetrahedra,  a cornercorner with one O(18)Tm3Ti tetrahedra,  a cornercorner with one O(19)Tm3Ti tetrahedra, corners with two equivalent O(6)Tm3Ti tetrahedra, corners with four equivalent O(12)Tm4 tetrahedra,  an edgeedge with one O(10)Tm3Ti tetrahedra, edges with two equivalent O(3)Tm2Ti2 tetrahedra, and  an edgeedge with one O(1)Tm3Ti trigonal pyramid. In the fifth O site, O(5) is bonded to one Ti(3), one Ti(4), and two equivalent Ti(2) atoms to form OTi4 trigonal pyramids that share  a cornercorner with one O(16)Tm2Ti2 tetrahedra,  a cornercorner with one O(10)Tm3Ti tetrahedra, corners with two equivalent O(9)Tm3Ti trigonal pyramids,  an edgeedge with one O(14)Tm2Ti2 tetrahedra, and  an edgeedge with one O(15)Tm2Ti2 tetrahedra. In the sixth O site, O(6) is bonded to one Tm(3), two equivalent Tm(4), and one Ti(1) atom to form OTm3Ti tetrahedra that share  a cornercorner with one O(16)Tm2Ti2 tetrahedra, corners with two equivalent O(4)Tm3Ti tetrahedra, corners with three equivalent O(10)Tm3Ti tetrahedra, corners with four equivalent O(12)Tm4 tetrahedra, and edges with two equivalent O(3)Tm2Ti2 tetrahedra. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Tm(5) and two equivalent Ti(2) atoms. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Tm(4), one Tm(6), and one Ti(2) atom. In the ninth O site, O(9) is bonded to one Tm(1), one Tm(5), one Tm(7), and one Ti(4) atom to form distorted OTm3Ti trigonal pyramids that share  a cornercorner with one O(3)Tm2Ti2 tetrahedra,  a cornercorner with one O(12)Tm4 tetrahedra, corners with two equivalent O(18)Tm3Ti tetrahedra,  a cornercorner with one O(5)Ti4 trigonal pyramid,  a cornercorner with one O(1)Tm3Ti trigonal pyramid, corners with two equivalent O(9)Tm3Ti trigonal pyramids,  an edgeedge with one O(14)Tm2Ti2 tetrahedra,  an edgeedge with one O(16)Tm2Ti2 tetrahedra, and  an edgeedge with one O(19)Tm3Ti tetrahedra. In the tenth O site, O(10) is bonded to one Tm(3), two equivalent Tm(4), and one Ti(3) atom to form distorted OTm3Ti tetrahedra that share  a cornercorner with one O(14)Tm2Ti2 tetrahedra, corners with two equivalent O(3)Tm2Ti2 tetrahedra, corners with three equivalent O(6)Tm3Ti tetrahedra,  a cornercorner with one O(5)Ti4 trigonal pyramid,  an edgeedge with one O(4)Tm3Ti tetrahedra, and edges with two equivalent O(12)Tm4 tetrahedra. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Tm(6), one Tm(7), one Ti(2), and one Ti(3) atom. In the twelfth O site, O(12) is bonded to one Tm(1), one Tm(2), one Tm(3), and one Tm(4) atom to form OTm4 tetrahedra that share  a cornercorner with one O(15)Tm2Ti2 tetrahedra,  a cornercorner with one O(16)Tm2Ti2 tetrahedra,  a cornercorner with one O(19)Tm3Ti tetrahedra, corners with two equivalent O(4)Tm3Ti tetrahedra, corners with two equivalent O(6)Tm3Ti tetrahedra, corners with two equivalent O(12)Tm4 tetrahedra,  a cornercorner with one O(9)Tm3Ti trigonal pyramid,  an edgeedge with one O(3)Tm2Ti2 tetrahedra,  an edgeedge with one O(10)Tm3Ti tetrahedra, and  an edgeedge with one O(1)Tm3Ti trigonal pyramid. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Tm(1), one Tm(7), and one Ti(1) atom. In the fourteenth O site, O(14) is bonded to two equivalent Tm(7), one Ti(3), and one Ti(4) atom to form OTm2Ti2 tetrahedra that share  a cornercorner with one O(16)Tm2Ti2 tetrahedra,  a cornercorner with one O(10)Tm3Ti tetrahedra,  an edgeedge with one O(18)Tm3Ti tetrahedra,  an edgeedge with one O(5)Ti4 trigonal pyramid, and edges with two equivalent O(9)Tm3Ti trigonal pyramids. In the fifteenth O site, O(15) is bonded to one Tm(2), one Tm(6), and two equivalent Ti(2) atoms to form OTm2Ti2 tetrahedra that share  a cornercorner with one O(4)Tm3Ti tetrahedra, corners with two equivalent O(12)Tm4 tetrahedra,  a cornercorner with one O(1)Tm3Ti trigonal pyramid, and  an edgeedge with one O(5)Ti4 trigonal pyramid. In the sixteenth O site, O(16) is bonded to two equivalent Tm(1), one Ti(1), and one Ti(4) atom to form OTm2Ti2 tetrahedra that share  a cornercorner with one O(14)Tm2Ti2 tetrahedra,  a cornercorner with one O(6)Tm3Ti tetrahedra, corners with two equivalent O(19)Tm3Ti tetrahedra, corners with two equivalent O(12)Tm4 tetrahedra,  a cornercorner with one O(5)Ti4 trigonal pyramid, edges with two equivalent O(3)Tm2Ti2 tetrahedra,  an edgeedge with one O(1)Tm3Ti trigonal pyramid, and edges with two equivalent O(9)Tm3Ti trigonal pyramids. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Tm(5), one Tm(7), one Ti(2), and one Ti(4) atom. In the eighteenth O site, O(18) is bonded to one Tm(5), two equivalent Tm(7), and one Ti(5) atom to form OTm3Ti tetrahedra that share  a cornercorner with one O(4)Tm3Ti tetrahedra, corners with two equivalent O(3)Tm2Ti2 tetrahedra,  a cornercorner with one O(1)Tm3Ti trigonal pyramid, corners with four equivalent O(9)Tm3Ti trigonal pyramids,  an edgeedge with one O(14)Tm2Ti2 tetrahedra, and  an edgeedge with one O(19)Tm3Ti tetrahedra. In the nineteenth O site, O(19) is bonded to one Tm(5), two equivalent Tm(1), and one Ti(5) atom to form OTm3Ti tetrahedra that share  a cornercorner with one O(4)Tm3Ti tetrahedra, corners with two equivalent O(16)Tm2Ti2 tetrahedra, corners with two equivalent O(12)Tm4 tetrahedra, corners with three equivalent O(1)Tm3Ti trigonal pyramids,  an edgeedge with one O(18)Tm3Ti tetrahedra, edges with two equivalent O(3)Tm2Ti2 tetrahedra, and edges with two equivalent O(9)Tm3Ti trigonal pyramids. is represented by the CIF card [CIF]
data_Tm10Ti6O27
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.363
_cell_length_b   7.363
_cell_length_c   12.084
_cell_angle_alpha   71.318
_cell_angle_beta   71.318
_cell_angle_gamma   61.422
_symmetry_Int_Tables_number   1
_cell_volume   533.874
_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
  Tm  Tm0  1  0.983  0.510  0.982  1.0
  Tm  Tm1  1  0.510  0.983  0.982  1.0
  Tm  Tm2  1  0.753  0.753  0.246  1.0
  Tm  Tm3  1  0.241  0.241  0.249  1.0
  Tm  Tm4  1  0.234  0.750  0.249  1.0
  Tm  Tm5  1  0.232  0.232  0.759  1.0
  Tm  Tm6  1  0.494  0.494  0.519  1.0
  Tm  Tm7  1  0.750  0.234  0.249  1.0
  Tm  Tm8  1  0.778  0.220  0.753  1.0
  Tm  Tm9  1  0.220  0.778  0.753  1.0
  Ti  Ti10  1  0.503  0.503  0.997  1.0
  Ti  Ti11  1  0.516  0.004  0.500  1.0
  Ti  Ti12  1  0.004  0.516  0.500  1.0
  Ti  Ti13  1  0.003  0.003  0.509  1.0
  Ti  Ti14  1  0.761  0.761  0.721  1.0
  Ti  Ti15  1  0.007  0.007  0.016  1.0
  O  O16  1  0.848  0.848  0.029  1.0
  O  O17  1  0.511  0.070  0.340  1.0
  O  O18  1  0.070  0.511  0.340  1.0
  O  O19  1  0.818  0.285  0.047  1.0
  O  O20  1  0.932  0.932  0.201  1.0
  O  O21  1  0.833  0.833  0.533  1.0
  O  O22  1  0.438  0.438  0.170  1.0
  O  O23  1  0.261  0.261  0.565  1.0
  O  O24  1  0.223  0.637  0.445  1.0
  O  O25  1  0.112  0.546  0.772  1.0
  O  O26  1  0.285  0.818  0.047  1.0
  O  O27  1  0.059  0.059  0.341  1.0
  O  O28  1  0.274  0.888  0.544  1.0
  O  O29  1  0.546  0.112  0.772  1.0
  O  O30  1  0.447  0.917  0.184  1.0
  O  O31  1  0.637  0.223  0.445  1.0
  O  O32  1  0.594  0.265  0.934  1.0
  O  O33  1  0.922  0.922  0.691  1.0
  O  O34  1  0.888  0.274  0.544  1.0
  O  O35  1  0.674  0.674  0.448  1.0
  O  O36  1  0.917  0.447  0.184  1.0
  O  O37  1  0.676  0.676  0.903  1.0
  O  O38  1  0.857  0.492  0.687  1.0
  O  O39  1  0.048  0.048  0.837  1.0
  O  O40  1  0.265  0.594  0.934  1.0
  O  O41  1  0.196  0.196  0.956  1.0
  O  O42  1  0.492  0.857  0.687  1.0
[/CIF]
.