The material structure described by La8Ti2Ga2O19 crystallizes in the monoclinic Pm space group. There are eight inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(13), one O(7), one O(9), two equivalent O(1), and two equivalent O(5) atoms. In the second La site, La(2) is bonded in a 8-coordinate geometry to one O(10), one O(14), one O(19), one O(8), two equivalent O(2), and two equivalent O(6) atoms. In the third La site, La(3) is bonded in a 7-coordinate geometry to one O(11), one O(18), one O(5), two equivalent O(3), and two equivalent O(7) atoms. In the fourth La site, La(4) is bonded in a 7-coordinate geometry to one O(12), one O(17), one O(6), two equivalent O(4), and two equivalent O(8) atoms. In the fifth La site, La(5) is bonded in a 7-coordinate geometry to one O(1), one O(17), one O(6), two equivalent O(14), and two equivalent O(9) atoms. In the sixth La site, La(6) is bonded in a 7-coordinate geometry to one O(18), one O(2), one O(5), two equivalent O(10), and two equivalent O(13) atoms. In the seventh La site, La(7) is bonded to one O(19), one O(3), one O(8), two equivalent O(11), and two equivalent O(16) atoms to form distorted LaO7 hexagonal pyramids that share  a cornercorner with one Ti(1)O5 trigonal bipyramid, edges with two equivalent La(7)O7 hexagonal pyramids, and edges with two equivalent Ti(2)O5 trigonal bipyramids. In the eighth La site, La(8) is bonded to one O(4), one O(7), two equivalent O(12), and two equivalent O(15) atoms to form LaO6 octahedra that share  a cornercorner with one Ga(1)O5 trigonal bipyramid, corners with two equivalent Ti(2)O5 trigonal bipyramids, and edges with two equivalent La(8)O6 octahedra. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(10), one O(14), one O(3), and two equivalent O(18) atoms to form distorted TiO5 trigonal bipyramids that share  a cornercorner with one La(7)O7 hexagonal pyramid and corners with two equivalent Ti(1)O5 trigonal bipyramids. In the second Ti site, Ti(2) is bonded to one O(11), one O(15), one O(2), and two equivalent O(19) atoms to form distorted TiO5 trigonal bipyramids that share corners with two equivalent La(8)O6 octahedra, corners with two equivalent Ti(2)O5 trigonal bipyramids, and edges with two equivalent La(7)O7 hexagonal pyramids. The corner-sharing octahedral tilt angles are 55°. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(13), one O(4), one O(9), and two equivalent O(17) atoms to form distorted GaO5 trigonal bipyramids that share  a cornercorner with one La(8)O6 octahedra and corners with two equivalent Ga(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 50°. In the second Ga site, Ga(2) is bonded in a trigonal planar geometry to one O(1), one O(12), and one O(16) atom. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one La(5), two equivalent La(1), and one Ga(2) atom. In the second O site, O(2) is bonded to one La(6), two equivalent La(2), and one Ti(2) atom to form distorted OLa3Ti tetrahedra that share  a cornercorner with one O(11)La3Ti tetrahedra,  a cornercorner with one O(5)La4 tetrahedra, corners with two equivalent O(2)La3Ti tetrahedra, corners with two equivalent O(6)La4 tetrahedra, corners with two equivalent O(8)La4 tetrahedra, corners with two equivalent O(13)La3Ga trigonal pyramids,  an edgeedge with one O(6)La4 tetrahedra, and edges with two equivalent O(10)La3Ti tetrahedra. In the third O site, O(3) is bonded to one La(7), two equivalent La(3), and one Ti(1) atom to form OLa3Ti tetrahedra that share  a cornercorner with one O(10)La3Ti tetrahedra,  a cornercorner with one O(8)La4 tetrahedra, corners with two equivalent O(3)La3Ti tetrahedra, corners with two equivalent O(5)La4 tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  an edgeedge with one O(7)La4 tetrahedra, and edges with two equivalent O(11)La3Ti tetrahedra. In the fourth O site, O(4) is bonded to one La(8), two equivalent La(4), and one Ga(1) atom to form distorted OLa3Ga tetrahedra that share  a cornercorner with one O(9)La3Ga tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(4)La3Ga tetrahedra, corners with two equivalent O(6)La4 tetrahedra, corners with two equivalent O(8)La4 tetrahedra,  a cornercorner with one O(13)La3Ga trigonal pyramid,  an edgeedge with one O(8)La4 tetrahedra, edges with two equivalent O(17)La2Ga2 tetrahedra, and edges with two equivalent O(12)La3Ga tetrahedra. In the fifth O site, O(5) is bonded to one La(3), one La(6), and two equivalent La(1) atoms to form OLa4 tetrahedra that share  a cornercorner with one O(11)La3Ti tetrahedra,  a cornercorner with one O(2)La3Ti tetrahedra, corners with two equivalent O(9)La3Ga tetrahedra, corners with two equivalent O(10)La3Ti tetrahedra, corners with two equivalent O(3)La3Ti tetrahedra, corners with two equivalent O(5)La4 tetrahedra, edges with two equivalent O(7)La4 tetrahedra, and edges with two equivalent O(13)La3Ga trigonal pyramids. In the sixth O site, O(6) is bonded to one La(4), one La(5), and two equivalent La(2) atoms to form OLa4 tetrahedra that share  a cornercorner with one O(12)La3Ga tetrahedra, corners with two equivalent O(4)La3Ga tetrahedra, corners with two equivalent O(9)La3Ga tetrahedra, corners with two equivalent O(10)La3Ti tetrahedra, corners with two equivalent O(2)La3Ti tetrahedra, corners with two equivalent O(6)La4 tetrahedra,  an edgeedge with one O(17)La2Ga2 tetrahedra,  an edgeedge with one O(2)La3Ti tetrahedra, and edges with two equivalent O(8)La4 tetrahedra. In the seventh O site, O(7) is bonded to one La(1), one La(8), and two equivalent La(3) atoms to form OLa4 tetrahedra that share  a cornercorner with one O(4)La3Ga tetrahedra,  a cornercorner with one O(9)La3Ga tetrahedra, corners with two equivalent O(12)La3Ga tetrahedra, corners with two equivalent O(11)La3Ti tetrahedra, corners with two equivalent O(3)La3Ti tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  a cornercorner with one O(13)La3Ga trigonal pyramid,  an edgeedge with one O(3)La3Ti tetrahedra, and edges with two equivalent O(5)La4 tetrahedra. In the eighth O site, O(8) is bonded to one La(2), one La(7), and two equivalent La(4) atoms to form OLa4 tetrahedra that share  a cornercorner with one O(10)La3Ti tetrahedra,  a cornercorner with one O(3)La3Ti tetrahedra, corners with two equivalent O(17)La2Ga2 tetrahedra, corners with two equivalent O(12)La3Ga tetrahedra, corners with two equivalent O(4)La3Ga tetrahedra, corners with two equivalent O(11)La3Ti tetrahedra, corners with two equivalent O(2)La3Ti tetrahedra, corners with two equivalent O(8)La4 tetrahedra,  an edgeedge with one O(4)La3Ga tetrahedra, and edges with two equivalent O(6)La4 tetrahedra. In the ninth O site, O(9) is bonded to one La(1), two equivalent La(5), and one Ga(1) atom to form OLa3Ga tetrahedra that share  a cornercorner with one O(4)La3Ga tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(9)La3Ga tetrahedra, corners with two equivalent O(5)La4 tetrahedra, corners with two equivalent O(6)La4 tetrahedra, edges with two equivalent O(17)La2Ga2 tetrahedra, and  an edgeedge with one O(13)La3Ga trigonal pyramid. In the tenth O site, O(10) is bonded to one La(2), two equivalent La(6), and one Ti(1) atom to form OLa3Ti tetrahedra that share  a cornercorner with one O(3)La3Ti tetrahedra,  a cornercorner with one O(8)La4 tetrahedra, corners with two equivalent O(10)La3Ti tetrahedra, corners with two equivalent O(5)La4 tetrahedra, corners with two equivalent O(6)La4 tetrahedra, corners with two equivalent O(13)La3Ga trigonal pyramids, edges with two equivalent O(2)La3Ti tetrahedra, and  an edgeedge with one O(13)La3Ga trigonal pyramid. In the eleventh O site, O(11) is bonded to one La(3), two equivalent La(7), and one Ti(2) atom to form OLa3Ti tetrahedra that share  a cornercorner with one O(2)La3Ti tetrahedra,  a cornercorner with one O(5)La4 tetrahedra, corners with two equivalent O(11)La3Ti tetrahedra, corners with two equivalent O(7)La4 tetrahedra, corners with two equivalent O(8)La4 tetrahedra, and edges with two equivalent O(3)La3Ti tetrahedra. In the twelfth O site, O(12) is bonded to one La(4), two equivalent La(8), and one Ga(2) atom to form distorted OLa3Ga tetrahedra that share  a cornercorner with one O(17)La2Ga2 tetrahedra,  a cornercorner with one O(6)La4 tetrahedra, corners with two equivalent O(12)La3Ga tetrahedra, corners with two equivalent O(7)La4 tetrahedra, corners with two equivalent O(8)La4 tetrahedra, and edges with two equivalent O(4)La3Ga tetrahedra. In the thirteenth O site, O(13) is bonded to one La(1), two equivalent La(6), and one Ga(1) atom to form distorted OLa3Ga trigonal pyramids that share  a cornercorner with one O(4)La3Ga tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(17)La2Ga2 tetrahedra, corners with two equivalent O(10)La3Ti tetrahedra, corners with two equivalent O(2)La3Ti tetrahedra, corners with two equivalent O(13)La3Ga trigonal pyramids,  an edgeedge with one O(9)La3Ga tetrahedra,  an edgeedge with one O(10)La3Ti tetrahedra, and edges with two equivalent O(5)La4 tetrahedra. In the fourteenth O site, O(14) is bonded in a 1-coordinate geometry to one La(2), two equivalent La(5), and one Ti(1) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to two equivalent La(8) and one Ti(2) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to two equivalent La(7) and one Ga(2) atom. In the seventeenth O site, O(17) is bonded to one La(4), one La(5), and two equivalent Ga(1) atoms to form distorted OLa2Ga2 tetrahedra that share  a cornercorner with one O(12)La3Ga tetrahedra, corners with two equivalent O(17)La2Ga2 tetrahedra, corners with two equivalent O(8)La4 tetrahedra, corners with two equivalent O(13)La3Ga trigonal pyramids,  an edgeedge with one O(6)La4 tetrahedra, edges with two equivalent O(4)La3Ga tetrahedra, and edges with two equivalent O(9)La3Ga tetrahedra. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one La(3), one La(6), and two equivalent Ti(1) atoms. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one La(2), one La(7), and two equivalent Ti(2) atoms. is represented by the CIF file [CIF]
data_La8Ti2Ga2O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.957
_cell_length_b   11.185
_cell_length_c   11.406
_cell_angle_alpha   89.910
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   504.771
_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
  La  La0  1  0.250  0.621  0.417  1.0
  La  La1  1  0.250  0.133  0.064  1.0
  La  La2  1  0.750  0.365  0.562  1.0
  La  La3  1  0.750  0.862  0.942  1.0
  La  La4  1  0.750  0.900  0.280  1.0
  La  La5  1  0.750  0.405  0.211  1.0
  La  La6  1  0.250  0.098  0.718  1.0
  La  La7  1  0.250  0.583  0.796  1.0
  Ti  Ti8  1  0.250  0.194  0.372  1.0
  Ti  Ti9  1  0.750  0.305  0.873  1.0
  Ga  Ga10  1  0.250  0.693  0.126  1.0
  Ga  Ga11  1  0.750  0.816  0.627  1.0
  O  O12  1  0.750  0.765  0.479  1.0
  O  O13  1  0.750  0.270  0.034  1.0
  O  O14  1  0.250  0.234  0.537  1.0
  O  O15  1  0.250  0.722  0.957  1.0
  O  O16  1  0.750  0.504  0.398  1.0
  O  O17  1  0.750  0.008  0.101  1.0
  O  O18  1  0.250  0.505  0.603  1.0
  O  O19  1  0.250  0.994  0.900  1.0
  O  O20  1  0.250  0.782  0.277  1.0
  O  O21  1  0.250  0.281  0.229  1.0
  O  O22  1  0.750  0.218  0.731  1.0
  O  O23  1  0.750  0.715  0.751  1.0
  O  O24  1  0.250  0.536  0.186  1.0
  O  O25  1  0.250  0.040  0.326  1.0
  O  O26  1  0.750  0.462  0.830  1.0
  O  O27  1  0.750  0.968  0.675  1.0
  O  O28  1  0.750  0.745  0.122  1.0
  O  O29  1  0.750  0.238  0.379  1.0
  O  O30  1  0.250  0.269  0.876  1.0
[/CIF]
.
The material structure described by La8Ti2Ga2O19 crystallizes in the monoclinic Pm space group. There are eight inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(13), one O(7), one O(9), two equivalent O(1), and two equivalent O(5) atoms. In the second La site, La(2) is bonded in a 8-coordinate geometry to one O(10), one O(14), one O(19), one O(8), two equivalent O(2), and two equivalent O(6) atoms. In the third La site, La(3) is bonded in a 7-coordinate geometry to one O(11), one O(18), one O(5), two equivalent O(3), and two equivalent O(7) atoms. In the fourth La site, La(4) is bonded in a 7-coordinate geometry to one O(12), one O(17), one O(6), two equivalent O(4), and two equivalent O(8) atoms. In the fifth La site, La(5) is bonded in a 7-coordinate geometry to one O(1), one O(17), one O(6), two equivalent O(14), and two equivalent O(9) atoms. In the sixth La site, La(6) is bonded in a 7-coordinate geometry to one O(18), one O(2), one O(5), two equivalent O(10), and two equivalent O(13) atoms. In the seventh La site, La(7) is bonded to one O(19), one O(3), one O(8), two equivalent O(11), and two equivalent O(16) atoms to form distorted LaO7 hexagonal pyramids that share  a cornercorner with one Ti(1)O5 trigonal bipyramid, edges with two equivalent La(7)O7 hexagonal pyramids, and edges with two equivalent Ti(2)O5 trigonal bipyramids. In the eighth La site, La(8) is bonded to one O(4), one O(7), two equivalent O(12), and two equivalent O(15) atoms to form LaO6 octahedra that share  a cornercorner with one Ga(1)O5 trigonal bipyramid, corners with two equivalent Ti(2)O5 trigonal bipyramids, and edges with two equivalent La(8)O6 octahedra. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(10), one O(14), one O(3), and two equivalent O(18) atoms to form distorted TiO5 trigonal bipyramids that share  a cornercorner with one La(7)O7 hexagonal pyramid and corners with two equivalent Ti(1)O5 trigonal bipyramids. In the second Ti site, Ti(2) is bonded to one O(11), one O(15), one O(2), and two equivalent O(19) atoms to form distorted TiO5 trigonal bipyramids that share corners with two equivalent La(8)O6 octahedra, corners with two equivalent Ti(2)O5 trigonal bipyramids, and edges with two equivalent La(7)O7 hexagonal pyramids. The corner-sharing octahedral tilt angles are 55°. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(13), one O(4), one O(9), and two equivalent O(17) atoms to form distorted GaO5 trigonal bipyramids that share  a cornercorner with one La(8)O6 octahedra and corners with two equivalent Ga(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 50°. In the second Ga site, Ga(2) is bonded in a trigonal planar geometry to one O(1), one O(12), and one O(16) atom. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one La(5), two equivalent La(1), and one Ga(2) atom. In the second O site, O(2) is bonded to one La(6), two equivalent La(2), and one Ti(2) atom to form distorted OLa3Ti tetrahedra that share  a cornercorner with one O(11)La3Ti tetrahedra,  a cornercorner with one O(5)La4 tetrahedra, corners with two equivalent O(2)La3Ti tetrahedra, corners with two equivalent O(6)La4 tetrahedra, corners with two equivalent O(8)La4 tetrahedra, corners with two equivalent O(13)La3Ga trigonal pyramids,  an edgeedge with one O(6)La4 tetrahedra, and edges with two equivalent O(10)La3Ti tetrahedra. In the third O site, O(3) is bonded to one La(7), two equivalent La(3), and one Ti(1) atom to form OLa3Ti tetrahedra that share  a cornercorner with one O(10)La3Ti tetrahedra,  a cornercorner with one O(8)La4 tetrahedra, corners with two equivalent O(3)La3Ti tetrahedra, corners with two equivalent O(5)La4 tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  an edgeedge with one O(7)La4 tetrahedra, and edges with two equivalent O(11)La3Ti tetrahedra. In the fourth O site, O(4) is bonded to one La(8), two equivalent La(4), and one Ga(1) atom to form distorted OLa3Ga tetrahedra that share  a cornercorner with one O(9)La3Ga tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(4)La3Ga tetrahedra, corners with two equivalent O(6)La4 tetrahedra, corners with two equivalent O(8)La4 tetrahedra,  a cornercorner with one O(13)La3Ga trigonal pyramid,  an edgeedge with one O(8)La4 tetrahedra, edges with two equivalent O(17)La2Ga2 tetrahedra, and edges with two equivalent O(12)La3Ga tetrahedra. In the fifth O site, O(5) is bonded to one La(3), one La(6), and two equivalent La(1) atoms to form OLa4 tetrahedra that share  a cornercorner with one O(11)La3Ti tetrahedra,  a cornercorner with one O(2)La3Ti tetrahedra, corners with two equivalent O(9)La3Ga tetrahedra, corners with two equivalent O(10)La3Ti tetrahedra, corners with two equivalent O(3)La3Ti tetrahedra, corners with two equivalent O(5)La4 tetrahedra, edges with two equivalent O(7)La4 tetrahedra, and edges with two equivalent O(13)La3Ga trigonal pyramids. In the sixth O site, O(6) is bonded to one La(4), one La(5), and two equivalent La(2) atoms to form OLa4 tetrahedra that share  a cornercorner with one O(12)La3Ga tetrahedra, corners with two equivalent O(4)La3Ga tetrahedra, corners with two equivalent O(9)La3Ga tetrahedra, corners with two equivalent O(10)La3Ti tetrahedra, corners with two equivalent O(2)La3Ti tetrahedra, corners with two equivalent O(6)La4 tetrahedra,  an edgeedge with one O(17)La2Ga2 tetrahedra,  an edgeedge with one O(2)La3Ti tetrahedra, and edges with two equivalent O(8)La4 tetrahedra. In the seventh O site, O(7) is bonded to one La(1), one La(8), and two equivalent La(3) atoms to form OLa4 tetrahedra that share  a cornercorner with one O(4)La3Ga tetrahedra,  a cornercorner with one O(9)La3Ga tetrahedra, corners with two equivalent O(12)La3Ga tetrahedra, corners with two equivalent O(11)La3Ti tetrahedra, corners with two equivalent O(3)La3Ti tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  a cornercorner with one O(13)La3Ga trigonal pyramid,  an edgeedge with one O(3)La3Ti tetrahedra, and edges with two equivalent O(5)La4 tetrahedra. In the eighth O site, O(8) is bonded to one La(2), one La(7), and two equivalent La(4) atoms to form OLa4 tetrahedra that share  a cornercorner with one O(10)La3Ti tetrahedra,  a cornercorner with one O(3)La3Ti tetrahedra, corners with two equivalent O(17)La2Ga2 tetrahedra, corners with two equivalent O(12)La3Ga tetrahedra, corners with two equivalent O(4)La3Ga tetrahedra, corners with two equivalent O(11)La3Ti tetrahedra, corners with two equivalent O(2)La3Ti tetrahedra, corners with two equivalent O(8)La4 tetrahedra,  an edgeedge with one O(4)La3Ga tetrahedra, and edges with two equivalent O(6)La4 tetrahedra. In the ninth O site, O(9) is bonded to one La(1), two equivalent La(5), and one Ga(1) atom to form OLa3Ga tetrahedra that share  a cornercorner with one O(4)La3Ga tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(9)La3Ga tetrahedra, corners with two equivalent O(5)La4 tetrahedra, corners with two equivalent O(6)La4 tetrahedra, edges with two equivalent O(17)La2Ga2 tetrahedra, and  an edgeedge with one O(13)La3Ga trigonal pyramid. In the tenth O site, O(10) is bonded to one La(2), two equivalent La(6), and one Ti(1) atom to form OLa3Ti tetrahedra that share  a cornercorner with one O(3)La3Ti tetrahedra,  a cornercorner with one O(8)La4 tetrahedra, corners with two equivalent O(10)La3Ti tetrahedra, corners with two equivalent O(5)La4 tetrahedra, corners with two equivalent O(6)La4 tetrahedra, corners with two equivalent O(13)La3Ga trigonal pyramids, edges with two equivalent O(2)La3Ti tetrahedra, and  an edgeedge with one O(13)La3Ga trigonal pyramid. In the eleventh O site, O(11) is bonded to one La(3), two equivalent La(7), and one Ti(2) atom to form OLa3Ti tetrahedra that share  a cornercorner with one O(2)La3Ti tetrahedra,  a cornercorner with one O(5)La4 tetrahedra, corners with two equivalent O(11)La3Ti tetrahedra, corners with two equivalent O(7)La4 tetrahedra, corners with two equivalent O(8)La4 tetrahedra, and edges with two equivalent O(3)La3Ti tetrahedra. In the twelfth O site, O(12) is bonded to one La(4), two equivalent La(8), and one Ga(2) atom to form distorted OLa3Ga tetrahedra that share  a cornercorner with one O(17)La2Ga2 tetrahedra,  a cornercorner with one O(6)La4 tetrahedra, corners with two equivalent O(12)La3Ga tetrahedra, corners with two equivalent O(7)La4 tetrahedra, corners with two equivalent O(8)La4 tetrahedra, and edges with two equivalent O(4)La3Ga tetrahedra. In the thirteenth O site, O(13) is bonded to one La(1), two equivalent La(6), and one Ga(1) atom to form distorted OLa3Ga trigonal pyramids that share  a cornercorner with one O(4)La3Ga tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(17)La2Ga2 tetrahedra, corners with two equivalent O(10)La3Ti tetrahedra, corners with two equivalent O(2)La3Ti tetrahedra, corners with two equivalent O(13)La3Ga trigonal pyramids,  an edgeedge with one O(9)La3Ga tetrahedra,  an edgeedge with one O(10)La3Ti tetrahedra, and edges with two equivalent O(5)La4 tetrahedra. In the fourteenth O site, O(14) is bonded in a 1-coordinate geometry to one La(2), two equivalent La(5), and one Ti(1) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to two equivalent La(8) and one Ti(2) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to two equivalent La(7) and one Ga(2) atom. In the seventeenth O site, O(17) is bonded to one La(4), one La(5), and two equivalent Ga(1) atoms to form distorted OLa2Ga2 tetrahedra that share  a cornercorner with one O(12)La3Ga tetrahedra, corners with two equivalent O(17)La2Ga2 tetrahedra, corners with two equivalent O(8)La4 tetrahedra, corners with two equivalent O(13)La3Ga trigonal pyramids,  an edgeedge with one O(6)La4 tetrahedra, edges with two equivalent O(4)La3Ga tetrahedra, and edges with two equivalent O(9)La3Ga tetrahedra. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one La(3), one La(6), and two equivalent Ti(1) atoms. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one La(2), one La(7), and two equivalent Ti(2) atoms. is represented by the CIF file [CIF]
data_La8Ti2Ga2O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.957
_cell_length_b   11.185
_cell_length_c   11.406
_cell_angle_alpha   89.910
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   504.771
_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
  La  La0  1  0.250  0.621  0.417  1.0
  La  La1  1  0.250  0.133  0.064  1.0
  La  La2  1  0.750  0.365  0.562  1.0
  La  La3  1  0.750  0.862  0.942  1.0
  La  La4  1  0.750  0.900  0.280  1.0
  La  La5  1  0.750  0.405  0.211  1.0
  La  La6  1  0.250  0.098  0.718  1.0
  La  La7  1  0.250  0.583  0.796  1.0
  Ti  Ti8  1  0.250  0.194  0.372  1.0
  Ti  Ti9  1  0.750  0.305  0.873  1.0
  Ga  Ga10  1  0.250  0.693  0.126  1.0
  Ga  Ga11  1  0.750  0.816  0.627  1.0
  O  O12  1  0.750  0.765  0.479  1.0
  O  O13  1  0.750  0.270  0.034  1.0
  O  O14  1  0.250  0.234  0.537  1.0
  O  O15  1  0.250  0.722  0.957  1.0
  O  O16  1  0.750  0.504  0.398  1.0
  O  O17  1  0.750  0.008  0.101  1.0
  O  O18  1  0.250  0.505  0.603  1.0
  O  O19  1  0.250  0.994  0.900  1.0
  O  O20  1  0.250  0.782  0.277  1.0
  O  O21  1  0.250  0.281  0.229  1.0
  O  O22  1  0.750  0.218  0.731  1.0
  O  O23  1  0.750  0.715  0.751  1.0
  O  O24  1  0.250  0.536  0.186  1.0
  O  O25  1  0.250  0.040  0.326  1.0
  O  O26  1  0.750  0.462  0.830  1.0
  O  O27  1  0.750  0.968  0.675  1.0
  O  O28  1  0.750  0.745  0.122  1.0
  O  O29  1  0.750  0.238  0.379  1.0
  O  O30  1  0.250  0.269  0.876  1.0
[/CIF]
.