The material described by Li5La4TiNb7O28 crystallizes in the triclinic P1 space group. There are five inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(12), one O(24), and one O(26) atom. In the second Li site, Li(2) is bonded to one O(11), one O(13), one O(25), one O(27), and one O(7) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(7)O6 octahedra, and corners with four equivalent Li(5)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 58°. In the third Li site, Li(3) is bonded in a distorted see-saw-like geometry to one O(10), one O(12), one O(24), and one O(26) atom. In the fourth Li site, Li(4) is bonded to one O(10), one O(12), one O(18), one O(24), and one O(26) atom to form LiO5 trigonal bipyramids that share  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Nb(4)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra, and  an edgeedge with one Nb(6)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. In the fifth Li site, Li(5) is bonded to one O(11), one O(13), one O(22), one O(25), and one O(27) atom to form LiO5 trigonal bipyramids that share corners with four equivalent Li(2)O5 trigonal bipyramids,  an edgeedge with one Nb(1)O6 octahedra, and  an edgeedge with one Nb(7)O6 octahedra. There are four inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to one O(15), one O(16), one O(19), one O(2), one O(20), one O(28), one O(8), and one O(9) atom. In the second La site, La(2) is bonded in a 12-coordinate geometry to one O(17), one O(18), one O(21), one O(22), one O(3), one O(4), one O(5), one O(6), two equivalent O(14), and two equivalent O(23) atoms. In the third La site, La(3) is bonded in a 12-coordinate geometry to one O(17), one O(18), one O(21), one O(22), one O(3), one O(4), one O(5), one O(6), two equivalent O(14), and two equivalent O(23) atoms. In the fourth La site, La(4) is bonded in a 8-coordinate geometry to one O(15), one O(16), one O(19), one O(2), one O(20), one O(28), one O(8), and one O(9) atom. Ti(1) is bonded to one O(10), one O(14), one O(17), one O(18), one O(3), and one O(4) atom to form distorted TiO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra, corners with four equivalent Nb(6)O6 octahedra, and  an edgeedge with one Li(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 4-34°. There are seven inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(11), one O(14), one O(21), one O(22), one O(5), and one O(6) atom to form distorted NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra, corners with four equivalent Nb(7)O6 octahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid, and  an edgeedge with one Li(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 5-38°. In the second Nb site, Nb(2) is bonded to one O(1), one O(12), one O(15), one O(16), one O(2), and one O(9) atom to form distorted NbO6 octahedra that share corners with four equivalent Nb(4)O6 octahedra and  a cornercorner with one Li(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 3-38°. In the third Nb site, Nb(3) is bonded in a 6-coordinate geometry to one O(13), one O(19), one O(20), one O(7), one O(8), and one O(9) atom. In the fourth Nb site, Nb(4) is bonded to one O(1), one O(15), one O(16), one O(2), one O(24), and one O(28) atom to form distorted NbO6 octahedra that share corners with four equivalent Nb(2)O6 octahedra and  a cornercorner with one Li(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 3-38°. In the fifth Nb site, Nb(5) is bonded in a 6-coordinate geometry to one O(19), one O(20), one O(25), one O(28), one O(7), and one O(8) atom. In the sixth Nb site, Nb(6) is bonded to one O(17), one O(18), one O(23), one O(26), one O(3), and one O(4) atom to form distorted NbO6 octahedra that share  a cornercorner with one Nb(7)O6 octahedra, corners with four equivalent Ti(1)O6 octahedra, and  an edgeedge with one Li(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 4-34°. In the seventh Nb site, Nb(7) is bonded to one O(21), one O(22), one O(23), one O(27), one O(5), and one O(6) atom to form distorted NbO6 octahedra that share  a cornercorner with one Nb(6)O6 octahedra, corners with four equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid, and  an edgeedge with one Li(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 5-38°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Li(1), one Nb(2), and one Nb(4) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one La(1), one La(4), one Nb(2), and one Nb(4) atom. In the third O site, O(3) is bonded to one La(2), one La(3), one Ti(1), and one Nb(6) atom to form distorted OLa2TiNb tetrahedra that share corners with two equivalent O(23)La4Nb2 trigonal pyramids,  an edgeedge with one O(5)La2Nb2 tetrahedra, and  a faceface with one O(23)La4Nb2 trigonal pyramid. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one La(2), one La(3), one Ti(1), and one Nb(6) atom. In the fifth O site, O(5) is bonded to one La(2), one La(3), one Nb(1), and one Nb(7) atom to form distorted OLa2Nb2 tetrahedra that share corners with two equivalent O(23)La4Nb2 trigonal pyramids,  an edgeedge with one O(3)La2TiNb tetrahedra, and  a faceface with one O(23)La4Nb2 trigonal pyramid. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one La(2), one La(3), one Nb(1), and one Nb(7) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Li(2), one Nb(3), and one Nb(5) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one La(1), one La(4), one Nb(3), and one Nb(5) atom. In the ninth O site, O(9) is bonded to one La(1), one La(4), one Nb(2), and one Nb(3) atom to form distorted OLa2Nb2 trigonal pyramids that share corners with three equivalent O(15)La2Nb2 tetrahedra, corners with three equivalent O(20)La2Nb2 tetrahedra,  a cornercorner with one O(19)La2Nb2 trigonal pyramid,  a cornercorner with one O(12)Li3Nb trigonal pyramid,  an edgeedge with one O(19)La2Nb2 trigonal pyramid, and  an edgeedge with one O(28)La2Nb2 trigonal pyramid. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Li(1), one Li(3), one Li(4), and one Ti(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Li(2), one Li(5), and one Nb(1) atom. In the twelfth O site, O(12) is bonded to one Li(1), one Li(3), one Li(4), and one Nb(2) atom to form distorted OLi3Nb trigonal pyramids that share  a cornercorner with one O(15)La2Nb2 tetrahedra,  a cornercorner with one O(9)La2Nb2 trigonal pyramid, and corners with three equivalent O(24)Li3Nb trigonal pyramids. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Li(2), one Li(5), and one Nb(3) atom. In the fourteenth O site, O(14) is bonded in a distorted see-saw-like geometry to two equivalent La(2), two equivalent La(3), one Ti(1), and one Nb(1) atom. In the fifteenth O site, O(15) is bonded to one La(1), one La(4), one Nb(2), and one Nb(4) atom to form distorted OLa2Nb2 tetrahedra that share  a cornercorner with one O(12)Li3Nb trigonal pyramid,  a cornercorner with one O(24)Li3Nb trigonal pyramid, corners with two equivalent O(19)La2Nb2 trigonal pyramids, corners with three equivalent O(28)La2Nb2 trigonal pyramids, corners with three equivalent O(9)La2Nb2 trigonal pyramids, and  an edgeedge with one O(20)La2Nb2 tetrahedra. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one La(1), one La(4), one Nb(2), and one Nb(4) atom. In the seventeenth O site, O(17) is bonded in a 4-coordinate geometry to one La(2), one La(3), one Ti(1), and one Nb(6) atom. In the eighteenth O site, O(18) is bonded in a T-shaped geometry to one Li(4), one La(2), one La(3), one Ti(1), and one Nb(6) atom. In the nineteenth O site, O(19) is bonded to one La(1), one La(4), one Nb(3), and one Nb(5) atom to form a mixture of distorted edge and corner-sharing OLa2Nb2 trigonal pyramids. In the twentieth O site, O(20) is bonded to one La(1), one La(4), one Nb(3), and one Nb(5) atom to form a mixture of distorted edge and corner-sharing OLa2Nb2 tetrahedra. In the twenty-first O site, O(21) is bonded in a distorted bent 150 degrees geometry to one La(2), one La(3), one Nb(1), and one Nb(7) atom. In the twenty-second O site, O(22) is bonded in a T-shaped geometry to one Li(5), one La(2), one La(3), one Nb(1), and one Nb(7) atom. In the twenty-third O site, O(23) is bonded to two equivalent La(2), two equivalent La(3), one Nb(6), and one Nb(7) atom to form distorted OLa4Nb2 trigonal pyramids that share corners with two equivalent O(5)La2Nb2 tetrahedra, corners with two equivalent O(3)La2TiNb tetrahedra, corners with four equivalent O(23)La4Nb2 trigonal pyramids,  a faceface with one O(5)La2Nb2 tetrahedra, and  a faceface with one O(3)La2TiNb tetrahedra. In the twenty-fourth O site, O(24) is bonded to one Li(1), one Li(3), one Li(4), and one Nb(4) atom to form distorted OLi3Nb trigonal pyramids that share  a cornercorner with one O(15)La2Nb2 tetrahedra,  a cornercorner with one O(28)La2Nb2 trigonal pyramid, and corners with three equivalent O(12)Li3Nb trigonal pyramids. In the twenty-fifth O site, O(25) is bonded in a distorted trigonal planar geometry to one Li(2), one Li(5), and one Nb(5) atom. In the twenty-sixth O site, O(26) is bonded in a distorted see-saw-like geometry to one Li(1), one Li(3), one Li(4), and one Nb(6) atom. In the twenty-seventh O site, O(27) is bonded in a distorted trigonal planar geometry to one Li(2), one Li(5), and one Nb(7) atom. In the twenty-eighth O site, O(28) is bonded to one La(1), one La(4), one Nb(4), and one Nb(5) atom to form distorted OLa2Nb2 trigonal pyramids that share corners with three equivalent O(15)La2Nb2 tetrahedra, corners with three equivalent O(20)La2Nb2 tetrahedra,  a cornercorner with one O(19)La2Nb2 trigonal pyramid,  a cornercorner with one O(24)Li3Nb trigonal pyramid,  an edgeedge with one O(19)La2Nb2 trigonal pyramid, and  an edgeedge with one O(9)La2Nb2 trigonal pyramid. is represented by the CIF file [CIF]
data_Li5La4TiNb7O28
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.592
_cell_length_b   5.595
_cell_length_c   19.006
_cell_angle_alpha   89.885
_cell_angle_beta   89.954
_cell_angle_gamma   89.975
_symmetry_Int_Tables_number   1
_cell_volume   594.605
_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
  Li  Li0  1  0.006  0.997  0.755  1.0
  Li  Li1  1  0.001  0.999  0.243  1.0
  Li  Li2  1  0.003  0.503  0.742  1.0
  Li  Li3  1  0.493  0.510  0.729  1.0
  Li  Li4  1  0.498  0.501  0.267  1.0
  La  La5  1  0.235  0.764  0.001  1.0
  La  La6  1  0.736  0.738  0.505  1.0
  La  La7  1  0.259  0.265  0.505  1.0
  La  La8  1  0.765  0.237  0.001  1.0
  Ti  Ti9  1  0.245  0.752  0.617  1.0
  Nb  Nb10  1  0.246  0.755  0.383  1.0
  Nb  Nb11  1  0.747  0.747  0.882  1.0
  Nb  Nb12  1  0.746  0.746  0.120  1.0
  Nb  Nb13  1  0.254  0.253  0.882  1.0
  Nb  Nb14  1  0.254  0.254  0.120  1.0
  Nb  Nb15  1  0.750  0.245  0.617  1.0
  Nb  Nb16  1  0.754  0.246  0.381  1.0
  O  O17  1  0.001  1.000  0.879  1.0
  O  O18  1  0.500  0.000  0.904  1.0
  O  O19  1  0.001  0.998  0.586  1.0
  O  O20  1  0.498  0.997  0.597  1.0
  O  O21  1  1.000  0.000  0.417  1.0
  O  O22  1  0.501  0.001  0.406  1.0
  O  O23  1  0.000  1.000  0.119  1.0
  O  O24  1  0.500  1.000  0.094  1.0
  O  O25  1  0.807  0.806  0.998  1.0
  O  O26  1  0.207  0.757  0.710  1.0
  O  O27  1  0.220  0.780  0.288  1.0
  O  O28  1  0.737  0.704  0.787  1.0
  O  O29  1  0.718  0.718  0.214  1.0
  O  O30  1  0.306  0.693  0.500  1.0
  O  O31  1  0.500  0.500  0.917  1.0
  O  O32  1  0.000  0.500  0.906  1.0
  O  O33  1  0.001  0.500  0.596  1.0
  O  O34  1  0.499  0.500  0.620  1.0
  O  O35  1  0.000  0.500  0.094  1.0
  O  O36  1  0.500  0.500  0.084  1.0
  O  O37  1  0.999  0.499  0.406  1.0
  O  O38  1  0.501  0.499  0.378  1.0
  O  O39  1  0.697  0.304  0.502  1.0
  O  O40  1  0.264  0.298  0.787  1.0
  O  O41  1  0.282  0.282  0.214  1.0
  O  O42  1  0.795  0.241  0.714  1.0
  O  O43  1  0.781  0.219  0.287  1.0
  O  O44  1  0.193  0.194  0.998  1.0
[/CIF]
.
The material described by Li5La4TiNb7O28 crystallizes in the triclinic P1 space group. There are five inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(12), one O(24), and one O(26) atom. In the second Li site, Li(2) is bonded to one O(11), one O(13), one O(25), one O(27), and one O(7) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(7)O6 octahedra, and corners with four equivalent Li(5)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 58°. In the third Li site, Li(3) is bonded in a distorted see-saw-like geometry to one O(10), one O(12), one O(24), and one O(26) atom. In the fourth Li site, Li(4) is bonded to one O(10), one O(12), one O(18), one O(24), and one O(26) atom to form LiO5 trigonal bipyramids that share  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Nb(4)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra, and  an edgeedge with one Nb(6)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. In the fifth Li site, Li(5) is bonded to one O(11), one O(13), one O(22), one O(25), and one O(27) atom to form LiO5 trigonal bipyramids that share corners with four equivalent Li(2)O5 trigonal bipyramids,  an edgeedge with one Nb(1)O6 octahedra, and  an edgeedge with one Nb(7)O6 octahedra. There are four inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to one O(15), one O(16), one O(19), one O(2), one O(20), one O(28), one O(8), and one O(9) atom. In the second La site, La(2) is bonded in a 12-coordinate geometry to one O(17), one O(18), one O(21), one O(22), one O(3), one O(4), one O(5), one O(6), two equivalent O(14), and two equivalent O(23) atoms. In the third La site, La(3) is bonded in a 12-coordinate geometry to one O(17), one O(18), one O(21), one O(22), one O(3), one O(4), one O(5), one O(6), two equivalent O(14), and two equivalent O(23) atoms. In the fourth La site, La(4) is bonded in a 8-coordinate geometry to one O(15), one O(16), one O(19), one O(2), one O(20), one O(28), one O(8), and one O(9) atom. Ti(1) is bonded to one O(10), one O(14), one O(17), one O(18), one O(3), and one O(4) atom to form distorted TiO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra, corners with four equivalent Nb(6)O6 octahedra, and  an edgeedge with one Li(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 4-34°. There are seven inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(11), one O(14), one O(21), one O(22), one O(5), and one O(6) atom to form distorted NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra, corners with four equivalent Nb(7)O6 octahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid, and  an edgeedge with one Li(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 5-38°. In the second Nb site, Nb(2) is bonded to one O(1), one O(12), one O(15), one O(16), one O(2), and one O(9) atom to form distorted NbO6 octahedra that share corners with four equivalent Nb(4)O6 octahedra and  a cornercorner with one Li(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 3-38°. In the third Nb site, Nb(3) is bonded in a 6-coordinate geometry to one O(13), one O(19), one O(20), one O(7), one O(8), and one O(9) atom. In the fourth Nb site, Nb(4) is bonded to one O(1), one O(15), one O(16), one O(2), one O(24), and one O(28) atom to form distorted NbO6 octahedra that share corners with four equivalent Nb(2)O6 octahedra and  a cornercorner with one Li(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 3-38°. In the fifth Nb site, Nb(5) is bonded in a 6-coordinate geometry to one O(19), one O(20), one O(25), one O(28), one O(7), and one O(8) atom. In the sixth Nb site, Nb(6) is bonded to one O(17), one O(18), one O(23), one O(26), one O(3), and one O(4) atom to form distorted NbO6 octahedra that share  a cornercorner with one Nb(7)O6 octahedra, corners with four equivalent Ti(1)O6 octahedra, and  an edgeedge with one Li(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 4-34°. In the seventh Nb site, Nb(7) is bonded to one O(21), one O(22), one O(23), one O(27), one O(5), and one O(6) atom to form distorted NbO6 octahedra that share  a cornercorner with one Nb(6)O6 octahedra, corners with four equivalent Nb(1)O6 octahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid, and  an edgeedge with one Li(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 5-38°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Li(1), one Nb(2), and one Nb(4) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one La(1), one La(4), one Nb(2), and one Nb(4) atom. In the third O site, O(3) is bonded to one La(2), one La(3), one Ti(1), and one Nb(6) atom to form distorted OLa2TiNb tetrahedra that share corners with two equivalent O(23)La4Nb2 trigonal pyramids,  an edgeedge with one O(5)La2Nb2 tetrahedra, and  a faceface with one O(23)La4Nb2 trigonal pyramid. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one La(2), one La(3), one Ti(1), and one Nb(6) atom. In the fifth O site, O(5) is bonded to one La(2), one La(3), one Nb(1), and one Nb(7) atom to form distorted OLa2Nb2 tetrahedra that share corners with two equivalent O(23)La4Nb2 trigonal pyramids,  an edgeedge with one O(3)La2TiNb tetrahedra, and  a faceface with one O(23)La4Nb2 trigonal pyramid. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one La(2), one La(3), one Nb(1), and one Nb(7) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Li(2), one Nb(3), and one Nb(5) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one La(1), one La(4), one Nb(3), and one Nb(5) atom. In the ninth O site, O(9) is bonded to one La(1), one La(4), one Nb(2), and one Nb(3) atom to form distorted OLa2Nb2 trigonal pyramids that share corners with three equivalent O(15)La2Nb2 tetrahedra, corners with three equivalent O(20)La2Nb2 tetrahedra,  a cornercorner with one O(19)La2Nb2 trigonal pyramid,  a cornercorner with one O(12)Li3Nb trigonal pyramid,  an edgeedge with one O(19)La2Nb2 trigonal pyramid, and  an edgeedge with one O(28)La2Nb2 trigonal pyramid. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Li(1), one Li(3), one Li(4), and one Ti(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Li(2), one Li(5), and one Nb(1) atom. In the twelfth O site, O(12) is bonded to one Li(1), one Li(3), one Li(4), and one Nb(2) atom to form distorted OLi3Nb trigonal pyramids that share  a cornercorner with one O(15)La2Nb2 tetrahedra,  a cornercorner with one O(9)La2Nb2 trigonal pyramid, and corners with three equivalent O(24)Li3Nb trigonal pyramids. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Li(2), one Li(5), and one Nb(3) atom. In the fourteenth O site, O(14) is bonded in a distorted see-saw-like geometry to two equivalent La(2), two equivalent La(3), one Ti(1), and one Nb(1) atom. In the fifteenth O site, O(15) is bonded to one La(1), one La(4), one Nb(2), and one Nb(4) atom to form distorted OLa2Nb2 tetrahedra that share  a cornercorner with one O(12)Li3Nb trigonal pyramid,  a cornercorner with one O(24)Li3Nb trigonal pyramid, corners with two equivalent O(19)La2Nb2 trigonal pyramids, corners with three equivalent O(28)La2Nb2 trigonal pyramids, corners with three equivalent O(9)La2Nb2 trigonal pyramids, and  an edgeedge with one O(20)La2Nb2 tetrahedra. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one La(1), one La(4), one Nb(2), and one Nb(4) atom. In the seventeenth O site, O(17) is bonded in a 4-coordinate geometry to one La(2), one La(3), one Ti(1), and one Nb(6) atom. In the eighteenth O site, O(18) is bonded in a T-shaped geometry to one Li(4), one La(2), one La(3), one Ti(1), and one Nb(6) atom. In the nineteenth O site, O(19) is bonded to one La(1), one La(4), one Nb(3), and one Nb(5) atom to form a mixture of distorted edge and corner-sharing OLa2Nb2 trigonal pyramids. In the twentieth O site, O(20) is bonded to one La(1), one La(4), one Nb(3), and one Nb(5) atom to form a mixture of distorted edge and corner-sharing OLa2Nb2 tetrahedra. In the twenty-first O site, O(21) is bonded in a distorted bent 150 degrees geometry to one La(2), one La(3), one Nb(1), and one Nb(7) atom. In the twenty-second O site, O(22) is bonded in a T-shaped geometry to one Li(5), one La(2), one La(3), one Nb(1), and one Nb(7) atom. In the twenty-third O site, O(23) is bonded to two equivalent La(2), two equivalent La(3), one Nb(6), and one Nb(7) atom to form distorted OLa4Nb2 trigonal pyramids that share corners with two equivalent O(5)La2Nb2 tetrahedra, corners with two equivalent O(3)La2TiNb tetrahedra, corners with four equivalent O(23)La4Nb2 trigonal pyramids,  a faceface with one O(5)La2Nb2 tetrahedra, and  a faceface with one O(3)La2TiNb tetrahedra. In the twenty-fourth O site, O(24) is bonded to one Li(1), one Li(3), one Li(4), and one Nb(4) atom to form distorted OLi3Nb trigonal pyramids that share  a cornercorner with one O(15)La2Nb2 tetrahedra,  a cornercorner with one O(28)La2Nb2 trigonal pyramid, and corners with three equivalent O(12)Li3Nb trigonal pyramids. In the twenty-fifth O site, O(25) is bonded in a distorted trigonal planar geometry to one Li(2), one Li(5), and one Nb(5) atom. In the twenty-sixth O site, O(26) is bonded in a distorted see-saw-like geometry to one Li(1), one Li(3), one Li(4), and one Nb(6) atom. In the twenty-seventh O site, O(27) is bonded in a distorted trigonal planar geometry to one Li(2), one Li(5), and one Nb(7) atom. In the twenty-eighth O site, O(28) is bonded to one La(1), one La(4), one Nb(4), and one Nb(5) atom to form distorted OLa2Nb2 trigonal pyramids that share corners with three equivalent O(15)La2Nb2 tetrahedra, corners with three equivalent O(20)La2Nb2 tetrahedra,  a cornercorner with one O(19)La2Nb2 trigonal pyramid,  a cornercorner with one O(24)Li3Nb trigonal pyramid,  an edgeedge with one O(19)La2Nb2 trigonal pyramid, and  an edgeedge with one O(9)La2Nb2 trigonal pyramid. is represented by the CIF file [CIF]
data_Li5La4TiNb7O28
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.592
_cell_length_b   5.595
_cell_length_c   19.006
_cell_angle_alpha   89.885
_cell_angle_beta   89.954
_cell_angle_gamma   89.975
_symmetry_Int_Tables_number   1
_cell_volume   594.605
_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
  Li  Li0  1  0.006  0.997  0.755  1.0
  Li  Li1  1  0.001  0.999  0.243  1.0
  Li  Li2  1  0.003  0.503  0.742  1.0
  Li  Li3  1  0.493  0.510  0.729  1.0
  Li  Li4  1  0.498  0.501  0.267  1.0
  La  La5  1  0.235  0.764  0.001  1.0
  La  La6  1  0.736  0.738  0.505  1.0
  La  La7  1  0.259  0.265  0.505  1.0
  La  La8  1  0.765  0.237  0.001  1.0
  Ti  Ti9  1  0.245  0.752  0.617  1.0
  Nb  Nb10  1  0.246  0.755  0.383  1.0
  Nb  Nb11  1  0.747  0.747  0.882  1.0
  Nb  Nb12  1  0.746  0.746  0.120  1.0
  Nb  Nb13  1  0.254  0.253  0.882  1.0
  Nb  Nb14  1  0.254  0.254  0.120  1.0
  Nb  Nb15  1  0.750  0.245  0.617  1.0
  Nb  Nb16  1  0.754  0.246  0.381  1.0
  O  O17  1  0.001  1.000  0.879  1.0
  O  O18  1  0.500  0.000  0.904  1.0
  O  O19  1  0.001  0.998  0.586  1.0
  O  O20  1  0.498  0.997  0.597  1.0
  O  O21  1  1.000  0.000  0.417  1.0
  O  O22  1  0.501  0.001  0.406  1.0
  O  O23  1  0.000  1.000  0.119  1.0
  O  O24  1  0.500  1.000  0.094  1.0
  O  O25  1  0.807  0.806  0.998  1.0
  O  O26  1  0.207  0.757  0.710  1.0
  O  O27  1  0.220  0.780  0.288  1.0
  O  O28  1  0.737  0.704  0.787  1.0
  O  O29  1  0.718  0.718  0.214  1.0
  O  O30  1  0.306  0.693  0.500  1.0
  O  O31  1  0.500  0.500  0.917  1.0
  O  O32  1  0.000  0.500  0.906  1.0
  O  O33  1  0.001  0.500  0.596  1.0
  O  O34  1  0.499  0.500  0.620  1.0
  O  O35  1  0.000  0.500  0.094  1.0
  O  O36  1  0.500  0.500  0.084  1.0
  O  O37  1  0.999  0.499  0.406  1.0
  O  O38  1  0.501  0.499  0.378  1.0
  O  O39  1  0.697  0.304  0.502  1.0
  O  O40  1  0.264  0.298  0.787  1.0
  O  O41  1  0.282  0.282  0.214  1.0
  O  O42  1  0.795  0.241  0.714  1.0
  O  O43  1  0.781  0.219  0.287  1.0
  O  O44  1  0.193  0.194  0.998  1.0
[/CIF]
.