The structure described by Sr5Ga6O14 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form distorted SrO6 octahedra that share corners with two equivalent Ga(1)O4 tetrahedra, corners with two equivalent Ga(2)O4 tetrahedra, corners with two equivalent Ga(3)O4 tetrahedra, and edges with two equivalent Ga(3)O4 tetrahedra. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(6), two equivalent O(4), and two equivalent O(7) atoms. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to one O(1), one O(5), one O(7), two equivalent O(2), and two equivalent O(6) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form GaO4 tetrahedra that share  a cornercorner with one Sr(1)O6 octahedra, corners with two equivalent Ga(2)O4 tetrahedra, and corners with two equivalent Ga(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 68°. In the second Ga site, Ga(2) is bonded to one O(1), one O(3), one O(4), and one O(7) atom to form GaO4 tetrahedra that share  a cornercorner with one Sr(1)O6 octahedra,  a cornercorner with one Ga(3)O4 tetrahedra, and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 56°. In the third Ga site, Ga(3) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form GaO4 tetrahedra that share  a cornercorner with one Sr(1)O6 octahedra,  a cornercorner with one Ga(2)O4 tetrahedra, corners with two equivalent Ga(1)O4 tetrahedra, and  an edgeedge with one Sr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 68°. There are seven inequivalent O sites. In the first O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Sr(2), one Ga(1), and one Ga(2) atom. In the second O site, O(5) is bonded to one Sr(1), one Sr(3), one Ga(1), and one Ga(3) atom to form a mixture of distorted corner and edge-sharing OSr2Ga2 tetrahedra. In the third O site, O(6) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), two equivalent Sr(3), and one Ga(3) atom. In the fourth O site, O(7) is bonded in a 4-coordinate geometry to one Sr(3), two equivalent Sr(2), and one Ga(2) atom. In the fifth O site, O(1) is bonded in a distorted see-saw-like geometry to one Sr(2), one Sr(3), one Ga(1), and one Ga(2) atom. In the sixth O site, O(2) is bonded in a 5-coordinate geometry to one Sr(2), two equivalent Sr(3), one Ga(1), and one Ga(3) atom. In the seventh O site, O(3) is bonded to one Sr(1), one Sr(2), one Ga(2), and one Ga(3) atom to form a mixture of distorted corner and edge-sharing OSr2Ga2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr5(Ga3O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.285
_cell_length_b   8.281
_cell_length_c   11.004
_cell_angle_alpha   87.690
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   754.365
_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
  Sr  Sr0  1  0.000  0.000  0.500  1.0
  Sr  Sr1  1  0.500  0.000  0.000  1.0
  Sr  Sr2  1  0.747  0.592  0.502  1.0
  Sr  Sr3  1  0.247  0.408  0.998  1.0
  Sr  Sr4  1  0.253  0.408  0.498  1.0
  Sr  Sr5  1  0.753  0.592  0.002  1.0
  Sr  Sr6  1  0.408  0.839  0.470  1.0
  Sr  Sr7  1  0.908  0.161  0.030  1.0
  Sr  Sr8  1  0.592  0.161  0.530  1.0
  Sr  Sr9  1  0.092  0.839  0.970  1.0
  Ga  Ga10  1  0.914  0.269  0.746  1.0
  Ga  Ga11  1  0.414  0.731  0.754  1.0
  Ga  Ga12  1  0.086  0.731  0.254  1.0
  Ga  Ga13  1  0.586  0.269  0.246  1.0
  Ga  Ga14  1  0.559  0.386  0.787  1.0
  Ga  Ga15  1  0.059  0.614  0.713  1.0
  Ga  Ga16  1  0.441  0.614  0.213  1.0
  Ga  Ga17  1  0.941  0.386  0.287  1.0
  Ga  Ga18  1  0.271  0.105  0.761  1.0
  Ga  Ga19  1  0.771  0.895  0.739  1.0
  Ga  Ga20  1  0.729  0.895  0.239  1.0
  Ga  Ga21  1  0.229  0.105  0.261  1.0
  O  O22  1  0.762  0.338  0.861  1.0
  O  O23  1  0.262  0.662  0.639  1.0
  O  O24  1  0.238  0.662  0.139  1.0
  O  O25  1  0.738  0.338  0.361  1.0
  O  O26  1  0.077  0.165  0.839  1.0
  O  O27  1  0.577  0.835  0.661  1.0
  O  O28  1  0.923  0.835  0.161  1.0
  O  O29  1  0.423  0.165  0.339  1.0
  O  O30  1  0.418  0.228  0.850  1.0
  O  O31  1  0.918  0.772  0.650  1.0
  O  O32  1  0.582  0.772  0.150  1.0
  O  O33  1  0.082  0.228  0.350  1.0
  O  O34  1  0.990  0.425  0.635  1.0
  O  O35  1  0.490  0.575  0.865  1.0
  O  O36  1  0.010  0.575  0.365  1.0
  O  O37  1  0.510  0.425  0.135  1.0
  O  O38  1  0.819  0.101  0.661  1.0
  O  O39  1  0.319  0.899  0.839  1.0
  O  O40  1  0.181  0.899  0.339  1.0
  O  O41  1  0.681  0.101  0.161  1.0
  O  O42  1  0.279  0.105  0.595  1.0
  O  O43  1  0.779  0.895  0.905  1.0
  O  O44  1  0.721  0.895  0.405  1.0
  O  O45  1  0.221  0.105  0.095  1.0
  O  O46  1  0.559  0.412  0.622  1.0
  O  O47  1  0.059  0.588  0.878  1.0
  O  O48  1  0.441  0.588  0.378  1.0
  O  O49  1  0.941  0.412  0.122  1.0
[/CIF]
.
The structure described by Sr5Ga6O14 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form distorted SrO6 octahedra that share corners with two equivalent Ga(1)O4 tetrahedra, corners with two equivalent Ga(2)O4 tetrahedra, corners with two equivalent Ga(3)O4 tetrahedra, and edges with two equivalent Ga(3)O4 tetrahedra. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(6), two equivalent O(4), and two equivalent O(7) atoms. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to one O(1), one O(5), one O(7), two equivalent O(2), and two equivalent O(6) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form GaO4 tetrahedra that share  a cornercorner with one Sr(1)O6 octahedra, corners with two equivalent Ga(2)O4 tetrahedra, and corners with two equivalent Ga(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 68°. In the second Ga site, Ga(2) is bonded to one O(1), one O(3), one O(4), and one O(7) atom to form GaO4 tetrahedra that share  a cornercorner with one Sr(1)O6 octahedra,  a cornercorner with one Ga(3)O4 tetrahedra, and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 56°. In the third Ga site, Ga(3) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form GaO4 tetrahedra that share  a cornercorner with one Sr(1)O6 octahedra,  a cornercorner with one Ga(2)O4 tetrahedra, corners with two equivalent Ga(1)O4 tetrahedra, and  an edgeedge with one Sr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 68°. There are seven inequivalent O sites. In the first O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Sr(2), one Ga(1), and one Ga(2) atom. In the second O site, O(5) is bonded to one Sr(1), one Sr(3), one Ga(1), and one Ga(3) atom to form a mixture of distorted corner and edge-sharing OSr2Ga2 tetrahedra. In the third O site, O(6) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), two equivalent Sr(3), and one Ga(3) atom. In the fourth O site, O(7) is bonded in a 4-coordinate geometry to one Sr(3), two equivalent Sr(2), and one Ga(2) atom. In the fifth O site, O(1) is bonded in a distorted see-saw-like geometry to one Sr(2), one Sr(3), one Ga(1), and one Ga(2) atom. In the sixth O site, O(2) is bonded in a 5-coordinate geometry to one Sr(2), two equivalent Sr(3), one Ga(1), and one Ga(3) atom. In the seventh O site, O(3) is bonded to one Sr(1), one Sr(2), one Ga(2), and one Ga(3) atom to form a mixture of distorted corner and edge-sharing OSr2Ga2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr5(Ga3O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.285
_cell_length_b   8.281
_cell_length_c   11.004
_cell_angle_alpha   87.690
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   754.365
_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
  Sr  Sr0  1  0.000  0.000  0.500  1.0
  Sr  Sr1  1  0.500  0.000  0.000  1.0
  Sr  Sr2  1  0.747  0.592  0.502  1.0
  Sr  Sr3  1  0.247  0.408  0.998  1.0
  Sr  Sr4  1  0.253  0.408  0.498  1.0
  Sr  Sr5  1  0.753  0.592  0.002  1.0
  Sr  Sr6  1  0.408  0.839  0.470  1.0
  Sr  Sr7  1  0.908  0.161  0.030  1.0
  Sr  Sr8  1  0.592  0.161  0.530  1.0
  Sr  Sr9  1  0.092  0.839  0.970  1.0
  Ga  Ga10  1  0.914  0.269  0.746  1.0
  Ga  Ga11  1  0.414  0.731  0.754  1.0
  Ga  Ga12  1  0.086  0.731  0.254  1.0
  Ga  Ga13  1  0.586  0.269  0.246  1.0
  Ga  Ga14  1  0.559  0.386  0.787  1.0
  Ga  Ga15  1  0.059  0.614  0.713  1.0
  Ga  Ga16  1  0.441  0.614  0.213  1.0
  Ga  Ga17  1  0.941  0.386  0.287  1.0
  Ga  Ga18  1  0.271  0.105  0.761  1.0
  Ga  Ga19  1  0.771  0.895  0.739  1.0
  Ga  Ga20  1  0.729  0.895  0.239  1.0
  Ga  Ga21  1  0.229  0.105  0.261  1.0
  O  O22  1  0.762  0.338  0.861  1.0
  O  O23  1  0.262  0.662  0.639  1.0
  O  O24  1  0.238  0.662  0.139  1.0
  O  O25  1  0.738  0.338  0.361  1.0
  O  O26  1  0.077  0.165  0.839  1.0
  O  O27  1  0.577  0.835  0.661  1.0
  O  O28  1  0.923  0.835  0.161  1.0
  O  O29  1  0.423  0.165  0.339  1.0
  O  O30  1  0.418  0.228  0.850  1.0
  O  O31  1  0.918  0.772  0.650  1.0
  O  O32  1  0.582  0.772  0.150  1.0
  O  O33  1  0.082  0.228  0.350  1.0
  O  O34  1  0.990  0.425  0.635  1.0
  O  O35  1  0.490  0.575  0.865  1.0
  O  O36  1  0.010  0.575  0.365  1.0
  O  O37  1  0.510  0.425  0.135  1.0
  O  O38  1  0.819  0.101  0.661  1.0
  O  O39  1  0.319  0.899  0.839  1.0
  O  O40  1  0.181  0.899  0.339  1.0
  O  O41  1  0.681  0.101  0.161  1.0
  O  O42  1  0.279  0.105  0.595  1.0
  O  O43  1  0.779  0.895  0.905  1.0
  O  O44  1  0.721  0.895  0.405  1.0
  O  O45  1  0.221  0.105  0.095  1.0
  O  O46  1  0.559  0.412  0.622  1.0
  O  O47  1  0.059  0.588  0.878  1.0
  O  O48  1  0.441  0.588  0.378  1.0
  O  O49  1  0.941  0.412  0.122  1.0
[/CIF]
.