The structure described by (CeO)4Ga2S5 crystallizes in the triclinic P1 space group. There are four inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 4-coordinate geometry to one S(5), two equivalent S(3), two equivalent S(4), one O(3), one O(4), and two equivalent O(1) atoms. In the second Ce site, Ce(2) is bonded in a 4-coordinate geometry to two equivalent S(3), two equivalent S(4), one O(3), one O(4), and two equivalent O(2) atoms. In the third Ce site, Ce(3) is bonded in a 4-coordinate geometry to one S(5), two equivalent S(1), two equivalent S(2), one O(1), one O(2), and two equivalent O(3) atoms. In the fourth Ce site, Ce(4) is bonded in a 4-coordinate geometry to two equivalent S(1), two equivalent S(2), one O(1), one O(2), and two equivalent O(4) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one S(2), one S(3), and two equivalent S(5) atoms to form corner-sharing GaS4 tetrahedra. In the second Ga site, Ga(2) is bonded in a 3-coordinate geometry to one S(1), one S(4), and one S(5) atom. There are five inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to two equivalent Ce(3), two equivalent Ce(4), and one Ga(2) atom. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent Ce(3), two equivalent Ce(4), and one Ga(1) atom. In the third S site, S(3) is bonded in a 5-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), and one Ga(1) atom. In the fourth S site, S(4) is bonded in a 5-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), and one Ga(2) atom. In the fifth S site, S(5) is bonded to one Ce(1), one Ce(3), one Ga(2), and two equivalent Ga(1) atoms to form distorted SCe2Ga3 trigonal bipyramids that share  a cornercorner with one O(2)Ce4 tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra, corners with three equivalent O(1)Ce4 tetrahedra, corners with three equivalent O(3)Ce4 tetrahedra, and corners with two equivalent S(5)Ce2Ga3 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Ce(3), one Ce(4), and two equivalent Ce(1) atoms to form OCe4 tetrahedra that share corners with two equivalent O(1)Ce4 tetrahedra, corners with two equivalent O(2)Ce4 tetrahedra, corners with three equivalent S(5)Ce2Ga3 trigonal bipyramids, edges with two equivalent O(3)Ce4 tetrahedra, and edges with two equivalent O(4)Ce4 tetrahedra. In the second O site, O(2) is bonded to one Ce(3), one Ce(4), and two equivalent Ce(2) atoms to form OCe4 tetrahedra that share corners with two equivalent O(1)Ce4 tetrahedra, corners with two equivalent O(2)Ce4 tetrahedra,  a cornercorner with one S(5)Ce2Ga3 trigonal bipyramid, edges with two equivalent O(3)Ce4 tetrahedra, and edges with two equivalent O(4)Ce4 tetrahedra. In the third O site, O(3) is bonded to one Ce(1), one Ce(2), and two equivalent Ce(3) atoms to form OCe4 tetrahedra that share corners with two equivalent O(3)Ce4 tetrahedra, corners with two equivalent O(4)Ce4 tetrahedra, corners with three equivalent S(5)Ce2Ga3 trigonal bipyramids, edges with two equivalent O(1)Ce4 tetrahedra, and edges with two equivalent O(2)Ce4 tetrahedra. In the fourth O site, O(4) is bonded to one Ce(1), one Ce(2), and two equivalent Ce(4) atoms to form OCe4 tetrahedra that share corners with two equivalent O(3)Ce4 tetrahedra, corners with two equivalent O(4)Ce4 tetrahedra,  a cornercorner with one S(5)Ce2Ga3 trigonal bipyramid, edges with two equivalent O(1)Ce4 tetrahedra, and edges with two equivalent O(2)Ce4 tetrahedra. is represented by the CIF card [CIF]
data_Ce4Ga2S5O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.893
_cell_length_b   7.862
_cell_length_c   9.673
_cell_angle_alpha   101.527
_cell_angle_beta   101.595
_cell_angle_gamma   90.206
_symmetry_Int_Tables_number   1
_cell_volume   283.899
_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
  Ce  Ce0  1  0.811  0.415  0.644  1.0
  Ce  Ce1  1  0.808  0.920  0.633  1.0
  Ce  Ce2  1  0.168  0.593  0.361  1.0
  Ce  Ce3  1  0.172  0.106  0.362  1.0
  Ga  Ga4  1  0.493  0.653  0.000  1.0
  Ga  Ga5  1  0.832  0.162  1.000  1.0
  S  S6  1  0.600  0.307  0.225  1.0
  S  S7  1  0.598  0.828  0.221  1.0
  S  S8  1  0.379  0.717  0.779  1.0
  S  S9  1  0.375  0.190  0.777  1.0
  S  S10  1  0.986  0.488  0.997  1.0
  O  O11  1  0.244  0.385  0.507  1.0
  O  O12  1  0.238  0.879  0.494  1.0
  O  O13  1  0.739  0.631  0.500  1.0
  O  O14  1  0.741  0.133  0.500  1.0
[/CIF]
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The structure described by (CeO)4Ga2S5 crystallizes in the triclinic P1 space group. There are four inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 4-coordinate geometry to one S(5), two equivalent S(3), two equivalent S(4), one O(3), one O(4), and two equivalent O(1) atoms. In the second Ce site, Ce(2) is bonded in a 4-coordinate geometry to two equivalent S(3), two equivalent S(4), one O(3), one O(4), and two equivalent O(2) atoms. In the third Ce site, Ce(3) is bonded in a 4-coordinate geometry to one S(5), two equivalent S(1), two equivalent S(2), one O(1), one O(2), and two equivalent O(3) atoms. In the fourth Ce site, Ce(4) is bonded in a 4-coordinate geometry to two equivalent S(1), two equivalent S(2), one O(1), one O(2), and two equivalent O(4) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one S(2), one S(3), and two equivalent S(5) atoms to form corner-sharing GaS4 tetrahedra. In the second Ga site, Ga(2) is bonded in a 3-coordinate geometry to one S(1), one S(4), and one S(5) atom. There are five inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to two equivalent Ce(3), two equivalent Ce(4), and one Ga(2) atom. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent Ce(3), two equivalent Ce(4), and one Ga(1) atom. In the third S site, S(3) is bonded in a 5-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), and one Ga(1) atom. In the fourth S site, S(4) is bonded in a 5-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), and one Ga(2) atom. In the fifth S site, S(5) is bonded to one Ce(1), one Ce(3), one Ga(2), and two equivalent Ga(1) atoms to form distorted SCe2Ga3 trigonal bipyramids that share  a cornercorner with one O(2)Ce4 tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra, corners with three equivalent O(1)Ce4 tetrahedra, corners with three equivalent O(3)Ce4 tetrahedra, and corners with two equivalent S(5)Ce2Ga3 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Ce(3), one Ce(4), and two equivalent Ce(1) atoms to form OCe4 tetrahedra that share corners with two equivalent O(1)Ce4 tetrahedra, corners with two equivalent O(2)Ce4 tetrahedra, corners with three equivalent S(5)Ce2Ga3 trigonal bipyramids, edges with two equivalent O(3)Ce4 tetrahedra, and edges with two equivalent O(4)Ce4 tetrahedra. In the second O site, O(2) is bonded to one Ce(3), one Ce(4), and two equivalent Ce(2) atoms to form OCe4 tetrahedra that share corners with two equivalent O(1)Ce4 tetrahedra, corners with two equivalent O(2)Ce4 tetrahedra,  a cornercorner with one S(5)Ce2Ga3 trigonal bipyramid, edges with two equivalent O(3)Ce4 tetrahedra, and edges with two equivalent O(4)Ce4 tetrahedra. In the third O site, O(3) is bonded to one Ce(1), one Ce(2), and two equivalent Ce(3) atoms to form OCe4 tetrahedra that share corners with two equivalent O(3)Ce4 tetrahedra, corners with two equivalent O(4)Ce4 tetrahedra, corners with three equivalent S(5)Ce2Ga3 trigonal bipyramids, edges with two equivalent O(1)Ce4 tetrahedra, and edges with two equivalent O(2)Ce4 tetrahedra. In the fourth O site, O(4) is bonded to one Ce(1), one Ce(2), and two equivalent Ce(4) atoms to form OCe4 tetrahedra that share corners with two equivalent O(3)Ce4 tetrahedra, corners with two equivalent O(4)Ce4 tetrahedra,  a cornercorner with one S(5)Ce2Ga3 trigonal bipyramid, edges with two equivalent O(1)Ce4 tetrahedra, and edges with two equivalent O(2)Ce4 tetrahedra. is represented by the CIF card [CIF]
data_Ce4Ga2S5O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.893
_cell_length_b   7.862
_cell_length_c   9.673
_cell_angle_alpha   101.527
_cell_angle_beta   101.595
_cell_angle_gamma   90.206
_symmetry_Int_Tables_number   1
_cell_volume   283.899
_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
  Ce  Ce0  1  0.811  0.415  0.644  1.0
  Ce  Ce1  1  0.808  0.920  0.633  1.0
  Ce  Ce2  1  0.168  0.593  0.361  1.0
  Ce  Ce3  1  0.172  0.106  0.362  1.0
  Ga  Ga4  1  0.493  0.653  0.000  1.0
  Ga  Ga5  1  0.832  0.162  1.000  1.0
  S  S6  1  0.600  0.307  0.225  1.0
  S  S7  1  0.598  0.828  0.221  1.0
  S  S8  1  0.379  0.717  0.779  1.0
  S  S9  1  0.375  0.190  0.777  1.0
  S  S10  1  0.986  0.488  0.997  1.0
  O  O11  1  0.244  0.385  0.507  1.0
  O  O12  1  0.238  0.879  0.494  1.0
  O  O13  1  0.739  0.631  0.500  1.0
  O  O14  1  0.741  0.133  0.500  1.0
[/CIF]
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