The crystal structure described by Sr3TiGa10O20 crystallizes in the monoclinic C2/m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(5), two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms. In the second Sr site, Sr(2) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(6) atoms. Ti(1) is bonded to two equivalent O(5) and four equivalent O(2) atoms to form TiO6 octahedra that share corners with four equivalent Ga(3)O4 tetrahedra and edges with four equivalent Ga(2)O6 octahedra. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form GaO4 tetrahedra that share  a cornercorner with one Ga(2)O6 octahedra,  a cornercorner with one Ga(1)O4 tetrahedra, and corners with three equivalent Ga(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. In the second Ga site, Ga(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form GaO6 octahedra that share corners with two equivalent Ga(1)O4 tetrahedra, corners with four equivalent Ga(3)O4 tetrahedra,  an edgeedge with one Ga(2)O6 octahedra, and edges with two equivalent Ti(1)O6 octahedra. In the third Ga site, Ga(3) is bonded to one O(2), one O(3), one O(4), and one O(6) atom to form GaO4 tetrahedra that share  a cornercorner with one Ti(1)O6 octahedra, corners with two equivalent Ga(2)O6 octahedra, and corners with three equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 45-63°. There are six inequivalent O sites. In the first O site, O(3) is bonded in a trigonal planar geometry to one Ga(1), one Ga(2), and one Ga(3) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to one Sr(1), one Ga(1), and one Ga(3) atom. In the third O site, O(5) is bonded to one Sr(1), one Ti(1), and two equivalent Ga(2) atoms to form distorted OSrTiGa2 tetrahedra that share  a cornercorner with one O(5)SrTiGa2 tetrahedra, corners with two equivalent O(6)Sr2Ga2 tetrahedra, and  an edgeedge with one O(5)SrTiGa2 tetrahedra. In the fourth O site, O(6) is bonded to one Sr(1), one Sr(2), one Ga(1), and one Ga(3) atom to form distorted OSr2Ga2 tetrahedra that share  a cornercorner with one O(5)SrTiGa2 tetrahedra, corners with two equivalent O(6)Sr2Ga2 tetrahedra, and  an edgeedge with one O(6)Sr2Ga2 tetrahedra. In the fifth O site, O(1) is bonded in a trigonal planar geometry to one Sr(2) and two equivalent Ga(1) atoms. In the sixth O site, O(2) is bonded in a 3-coordinate geometry to one Sr(1), one Ti(1), one Ga(2), and one Ga(3) atom. is represented by the CIF file [CIF]
data_Sr3Ti(GaO2)10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.833
_cell_length_b   9.833
_cell_length_c   5.154
_cell_angle_alpha   75.164
_cell_angle_beta   75.164
_cell_angle_gamma   73.923
_symmetry_Int_Tables_number   1
_cell_volume   453.633
_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
  Sr  Sr0  1  0.278  0.278  0.713  1.0
  Sr  Sr1  1  0.722  0.722  0.287  1.0
  Sr  Sr2  1  0.000  0.000  0.000  1.0
  Ti  Ti3  1  0.500  0.500  0.000  1.0
  Ga  Ga4  1  0.007  0.278  0.346  1.0
  Ga  Ga5  1  0.278  0.007  0.346  1.0
  Ga  Ga6  1  0.993  0.722  0.654  1.0
  Ga  Ga7  1  0.722  0.993  0.654  1.0
  Ga  Ga8  1  0.635  0.365  0.500  1.0
  Ga  Ga9  1  0.365  0.635  0.500  1.0
  Ga  Ga10  1  0.857  0.423  0.834  1.0
  Ga  Ga11  1  0.423  0.857  0.834  1.0
  Ga  Ga12  1  0.143  0.577  0.166  1.0
  Ga  Ga13  1  0.577  0.143  0.166  1.0
  O  O14  1  0.907  0.907  0.496  1.0
  O  O15  1  0.093  0.093  0.504  1.0
  O  O16  1  0.308  0.543  0.893  1.0
  O  O17  1  0.543  0.308  0.893  1.0
  O  O18  1  0.692  0.457  0.107  1.0
  O  O19  1  0.457  0.692  0.107  1.0
  O  O20  1  0.828  0.334  0.575  1.0
  O  O21  1  0.334  0.828  0.575  1.0
  O  O22  1  0.172  0.666  0.425  1.0
  O  O23  1  0.666  0.172  0.425  1.0
  O  O24  1  0.605  0.875  0.651  1.0
  O  O25  1  0.875  0.605  0.651  1.0
  O  O26  1  0.395  0.125  0.349  1.0
  O  O27  1  0.125  0.395  0.349  1.0
  O  O28  1  0.567  0.567  0.611  1.0
  O  O29  1  0.433  0.433  0.389  1.0
  O  O30  1  0.002  0.281  0.985  1.0
  O  O31  1  0.281  0.002  0.985  1.0
  O  O32  1  0.998  0.719  0.015  1.0
  O  O33  1  0.719  0.998  0.015  1.0
[/CIF]
.
The crystal structure described by Sr3TiGa10O20 crystallizes in the monoclinic C2/m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(5), two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms. In the second Sr site, Sr(2) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(6) atoms. Ti(1) is bonded to two equivalent O(5) and four equivalent O(2) atoms to form TiO6 octahedra that share corners with four equivalent Ga(3)O4 tetrahedra and edges with four equivalent Ga(2)O6 octahedra. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form GaO4 tetrahedra that share  a cornercorner with one Ga(2)O6 octahedra,  a cornercorner with one Ga(1)O4 tetrahedra, and corners with three equivalent Ga(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. In the second Ga site, Ga(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form GaO6 octahedra that share corners with two equivalent Ga(1)O4 tetrahedra, corners with four equivalent Ga(3)O4 tetrahedra,  an edgeedge with one Ga(2)O6 octahedra, and edges with two equivalent Ti(1)O6 octahedra. In the third Ga site, Ga(3) is bonded to one O(2), one O(3), one O(4), and one O(6) atom to form GaO4 tetrahedra that share  a cornercorner with one Ti(1)O6 octahedra, corners with two equivalent Ga(2)O6 octahedra, and corners with three equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 45-63°. There are six inequivalent O sites. In the first O site, O(3) is bonded in a trigonal planar geometry to one Ga(1), one Ga(2), and one Ga(3) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to one Sr(1), one Ga(1), and one Ga(3) atom. In the third O site, O(5) is bonded to one Sr(1), one Ti(1), and two equivalent Ga(2) atoms to form distorted OSrTiGa2 tetrahedra that share  a cornercorner with one O(5)SrTiGa2 tetrahedra, corners with two equivalent O(6)Sr2Ga2 tetrahedra, and  an edgeedge with one O(5)SrTiGa2 tetrahedra. In the fourth O site, O(6) is bonded to one Sr(1), one Sr(2), one Ga(1), and one Ga(3) atom to form distorted OSr2Ga2 tetrahedra that share  a cornercorner with one O(5)SrTiGa2 tetrahedra, corners with two equivalent O(6)Sr2Ga2 tetrahedra, and  an edgeedge with one O(6)Sr2Ga2 tetrahedra. In the fifth O site, O(1) is bonded in a trigonal planar geometry to one Sr(2) and two equivalent Ga(1) atoms. In the sixth O site, O(2) is bonded in a 3-coordinate geometry to one Sr(1), one Ti(1), one Ga(2), and one Ga(3) atom. is represented by the CIF file [CIF]
data_Sr3Ti(GaO2)10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.833
_cell_length_b   9.833
_cell_length_c   5.154
_cell_angle_alpha   75.164
_cell_angle_beta   75.164
_cell_angle_gamma   73.923
_symmetry_Int_Tables_number   1
_cell_volume   453.633
_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
  Sr  Sr0  1  0.278  0.278  0.713  1.0
  Sr  Sr1  1  0.722  0.722  0.287  1.0
  Sr  Sr2  1  0.000  0.000  0.000  1.0
  Ti  Ti3  1  0.500  0.500  0.000  1.0
  Ga  Ga4  1  0.007  0.278  0.346  1.0
  Ga  Ga5  1  0.278  0.007  0.346  1.0
  Ga  Ga6  1  0.993  0.722  0.654  1.0
  Ga  Ga7  1  0.722  0.993  0.654  1.0
  Ga  Ga8  1  0.635  0.365  0.500  1.0
  Ga  Ga9  1  0.365  0.635  0.500  1.0
  Ga  Ga10  1  0.857  0.423  0.834  1.0
  Ga  Ga11  1  0.423  0.857  0.834  1.0
  Ga  Ga12  1  0.143  0.577  0.166  1.0
  Ga  Ga13  1  0.577  0.143  0.166  1.0
  O  O14  1  0.907  0.907  0.496  1.0
  O  O15  1  0.093  0.093  0.504  1.0
  O  O16  1  0.308  0.543  0.893  1.0
  O  O17  1  0.543  0.308  0.893  1.0
  O  O18  1  0.692  0.457  0.107  1.0
  O  O19  1  0.457  0.692  0.107  1.0
  O  O20  1  0.828  0.334  0.575  1.0
  O  O21  1  0.334  0.828  0.575  1.0
  O  O22  1  0.172  0.666  0.425  1.0
  O  O23  1  0.666  0.172  0.425  1.0
  O  O24  1  0.605  0.875  0.651  1.0
  O  O25  1  0.875  0.605  0.651  1.0
  O  O26  1  0.395  0.125  0.349  1.0
  O  O27  1  0.125  0.395  0.349  1.0
  O  O28  1  0.567  0.567  0.611  1.0
  O  O29  1  0.433  0.433  0.389  1.0
  O  O30  1  0.002  0.281  0.985  1.0
  O  O31  1  0.281  0.002  0.985  1.0
  O  O32  1  0.998  0.719  0.015  1.0
  O  O33  1  0.719  0.998  0.015  1.0
[/CIF]
.