The compound described by (La2O)LaGaS5 crystallizes in the orthorhombic Pnma space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 1-coordinate geometry to two equivalent S(2), two equivalent S(3), two equivalent S(4), two equivalent S(5), and one O(1) atom. In the second La site, La(2) is bonded in a 8-coordinate geometry to one S(3), two equivalent S(4), two equivalent S(5), and three equivalent S(1) atoms. In the third La site, La(3) is bonded in a 8-coordinate geometry to one S(4), two equivalent S(1), two equivalent S(2), and three equivalent O(1) atoms. Ga(1) is bonded to one S(2), one S(5), and two equivalent S(3) atoms to form corner-sharing GaS4 tetrahedra. There are five inequivalent S sites. In the first S site, S(1) is bonded to two equivalent La(3) and three equivalent La(2) atoms to form distorted SLa5 square pyramids that share corners with four equivalent O(1)La4 tetrahedra, corners with two equivalent S(4)La5 trigonal bipyramids, corners with three equivalent S(3)La3Ga2 trigonal bipyramids, edges with four equivalent S(1)La5 square pyramids,  an edgeedge with one O(1)La4 tetrahedra, and edges with three equivalent S(4)La5 trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent La(1), two equivalent La(3), and one Ga(1) atom. In the third S site, S(3) is bonded to one La(2), two equivalent La(1), and two equivalent Ga(1) atoms to form distorted SLa3Ga2 trigonal bipyramids that share corners with three equivalent S(1)La5 square pyramids, corners with two equivalent O(1)La4 tetrahedra, corners with two equivalent S(4)La5 trigonal bipyramids, corners with four equivalent S(3)La3Ga2 trigonal bipyramids, and edges with two equivalent S(4)La5 trigonal bipyramids. In the fourth S site, S(4) is bonded to one La(3), two equivalent La(1), and two equivalent La(2) atoms to form SLa5 trigonal bipyramids that share corners with two equivalent S(1)La5 square pyramids,  a cornercorner with one O(1)La4 tetrahedra, corners with two equivalent S(3)La3Ga2 trigonal bipyramids, edges with three equivalent S(1)La5 square pyramids, edges with two equivalent O(1)La4 tetrahedra, edges with two equivalent S(3)La3Ga2 trigonal bipyramids, and edges with two equivalent S(4)La5 trigonal bipyramids. In the fifth S site, S(5) is bonded in a 5-coordinate geometry to two equivalent La(1), two equivalent La(2), and one Ga(1) atom. O(1) is bonded to one La(1) and three equivalent La(3) atoms to form OLa4 tetrahedra that share corners with four equivalent S(1)La5 square pyramids, corners with two equivalent O(1)La4 tetrahedra,  a cornercorner with one S(4)La5 trigonal bipyramid, corners with two equivalent S(3)La3Ga2 trigonal bipyramids,  an edgeedge with one S(1)La5 square pyramid, edges with two equivalent O(1)La4 tetrahedra, and edges with two equivalent S(4)La5 trigonal bipyramids. is represented by the CIF file [CIF]
data_La3GaS5O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.049
_cell_length_b   10.856
_cell_length_c   20.069
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   882.190
_cell_formula_units_Z   4
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  0.750  0.099  0.337  1.0
  La  La1  1  0.250  0.020  0.897  1.0
  La  La2  1  0.250  0.647  0.990  1.0
  La  La3  1  0.750  0.353  0.010  1.0
  La  La4  1  0.250  0.147  0.510  1.0
  La  La5  1  0.750  0.480  0.397  1.0
  La  La6  1  0.750  0.853  0.490  1.0
  La  La7  1  0.250  0.401  0.837  1.0
  La  La8  1  0.750  0.599  0.163  1.0
  La  La9  1  0.250  0.901  0.663  1.0
  La  La10  1  0.750  0.980  0.103  1.0
  La  La11  1  0.250  0.520  0.603  1.0
  Ga  Ga12  1  0.250  0.294  0.211  1.0
  Ga  Ga13  1  0.750  0.706  0.789  1.0
  Ga  Ga14  1  0.750  0.206  0.711  1.0
  Ga  Ga15  1  0.250  0.794  0.289  1.0
  S  S16  1  0.750  0.873  0.965  1.0
  S  S17  1  0.750  0.585  0.880  1.0
  S  S18  1  0.250  0.648  0.738  1.0
  S  S19  1  0.750  0.722  0.615  1.0
  S  S20  1  0.250  0.088  0.212  1.0
  S  S21  1  0.250  0.278  0.385  1.0
  S  S22  1  0.250  0.915  0.380  1.0
  S  S23  1  0.250  0.627  0.465  1.0
  S  S24  1  0.250  0.148  0.762  1.0
  S  S25  1  0.250  0.588  0.288  1.0
  S  S26  1  0.250  0.127  0.035  1.0
  S  S27  1  0.250  0.778  0.115  1.0
  S  S28  1  0.750  0.085  0.620  1.0
  S  S29  1  0.750  0.222  0.885  1.0
  S  S30  1  0.750  0.373  0.535  1.0
  S  S31  1  0.750  0.912  0.788  1.0
  S  S32  1  0.250  0.415  0.120  1.0
  S  S33  1  0.750  0.352  0.262  1.0
  S  S34  1  0.750  0.852  0.238  1.0
  S  S35  1  0.750  0.412  0.712  1.0
  O  O36  1  0.250  0.425  0.958  1.0
  O  O37  1  0.750  0.575  0.042  1.0
  O  O38  1  0.750  0.075  0.458  1.0
  O  O39  1  0.250  0.925  0.542  1.0
[/CIF]
.
The compound described by (La2O)LaGaS5 crystallizes in the orthorhombic Pnma space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 1-coordinate geometry to two equivalent S(2), two equivalent S(3), two equivalent S(4), two equivalent S(5), and one O(1) atom. In the second La site, La(2) is bonded in a 8-coordinate geometry to one S(3), two equivalent S(4), two equivalent S(5), and three equivalent S(1) atoms. In the third La site, La(3) is bonded in a 8-coordinate geometry to one S(4), two equivalent S(1), two equivalent S(2), and three equivalent O(1) atoms. Ga(1) is bonded to one S(2), one S(5), and two equivalent S(3) atoms to form corner-sharing GaS4 tetrahedra. There are five inequivalent S sites. In the first S site, S(1) is bonded to two equivalent La(3) and three equivalent La(2) atoms to form distorted SLa5 square pyramids that share corners with four equivalent O(1)La4 tetrahedra, corners with two equivalent S(4)La5 trigonal bipyramids, corners with three equivalent S(3)La3Ga2 trigonal bipyramids, edges with four equivalent S(1)La5 square pyramids,  an edgeedge with one O(1)La4 tetrahedra, and edges with three equivalent S(4)La5 trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent La(1), two equivalent La(3), and one Ga(1) atom. In the third S site, S(3) is bonded to one La(2), two equivalent La(1), and two equivalent Ga(1) atoms to form distorted SLa3Ga2 trigonal bipyramids that share corners with three equivalent S(1)La5 square pyramids, corners with two equivalent O(1)La4 tetrahedra, corners with two equivalent S(4)La5 trigonal bipyramids, corners with four equivalent S(3)La3Ga2 trigonal bipyramids, and edges with two equivalent S(4)La5 trigonal bipyramids. In the fourth S site, S(4) is bonded to one La(3), two equivalent La(1), and two equivalent La(2) atoms to form SLa5 trigonal bipyramids that share corners with two equivalent S(1)La5 square pyramids,  a cornercorner with one O(1)La4 tetrahedra, corners with two equivalent S(3)La3Ga2 trigonal bipyramids, edges with three equivalent S(1)La5 square pyramids, edges with two equivalent O(1)La4 tetrahedra, edges with two equivalent S(3)La3Ga2 trigonal bipyramids, and edges with two equivalent S(4)La5 trigonal bipyramids. In the fifth S site, S(5) is bonded in a 5-coordinate geometry to two equivalent La(1), two equivalent La(2), and one Ga(1) atom. O(1) is bonded to one La(1) and three equivalent La(3) atoms to form OLa4 tetrahedra that share corners with four equivalent S(1)La5 square pyramids, corners with two equivalent O(1)La4 tetrahedra,  a cornercorner with one S(4)La5 trigonal bipyramid, corners with two equivalent S(3)La3Ga2 trigonal bipyramids,  an edgeedge with one S(1)La5 square pyramid, edges with two equivalent O(1)La4 tetrahedra, and edges with two equivalent S(4)La5 trigonal bipyramids. is represented by the CIF file [CIF]
data_La3GaS5O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.049
_cell_length_b   10.856
_cell_length_c   20.069
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   882.190
_cell_formula_units_Z   4
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  0.750  0.099  0.337  1.0
  La  La1  1  0.250  0.020  0.897  1.0
  La  La2  1  0.250  0.647  0.990  1.0
  La  La3  1  0.750  0.353  0.010  1.0
  La  La4  1  0.250  0.147  0.510  1.0
  La  La5  1  0.750  0.480  0.397  1.0
  La  La6  1  0.750  0.853  0.490  1.0
  La  La7  1  0.250  0.401  0.837  1.0
  La  La8  1  0.750  0.599  0.163  1.0
  La  La9  1  0.250  0.901  0.663  1.0
  La  La10  1  0.750  0.980  0.103  1.0
  La  La11  1  0.250  0.520  0.603  1.0
  Ga  Ga12  1  0.250  0.294  0.211  1.0
  Ga  Ga13  1  0.750  0.706  0.789  1.0
  Ga  Ga14  1  0.750  0.206  0.711  1.0
  Ga  Ga15  1  0.250  0.794  0.289  1.0
  S  S16  1  0.750  0.873  0.965  1.0
  S  S17  1  0.750  0.585  0.880  1.0
  S  S18  1  0.250  0.648  0.738  1.0
  S  S19  1  0.750  0.722  0.615  1.0
  S  S20  1  0.250  0.088  0.212  1.0
  S  S21  1  0.250  0.278  0.385  1.0
  S  S22  1  0.250  0.915  0.380  1.0
  S  S23  1  0.250  0.627  0.465  1.0
  S  S24  1  0.250  0.148  0.762  1.0
  S  S25  1  0.250  0.588  0.288  1.0
  S  S26  1  0.250  0.127  0.035  1.0
  S  S27  1  0.250  0.778  0.115  1.0
  S  S28  1  0.750  0.085  0.620  1.0
  S  S29  1  0.750  0.222  0.885  1.0
  S  S30  1  0.750  0.373  0.535  1.0
  S  S31  1  0.750  0.912  0.788  1.0
  S  S32  1  0.250  0.415  0.120  1.0
  S  S33  1  0.750  0.352  0.262  1.0
  S  S34  1  0.750  0.852  0.238  1.0
  S  S35  1  0.750  0.412  0.712  1.0
  O  O36  1  0.250  0.425  0.958  1.0
  O  O37  1  0.750  0.575  0.042  1.0
  O  O38  1  0.750  0.075  0.458  1.0
  O  O39  1  0.250  0.925  0.542  1.0
[/CIF]
.