The crystal structure described by Tb2S2O crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 3-coordinate geometry to one S(1), three equivalent S(2), and three equivalent O(1) atoms. In the second Tb site, Tb(2) is bonded in a 7-coordinate geometry to two equivalent S(2), four equivalent S(1), and one O(1) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Tb(1) and four equivalent Tb(2) atoms to form distorted STb5 trigonal bipyramids that share corners with three equivalent O(1)Tb4 tetrahedra, corners with four equivalent S(1)Tb5 trigonal bipyramids, edges with two equivalent O(1)Tb4 tetrahedra, and edges with four equivalent S(1)Tb5 trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent Tb(2) and three equivalent Tb(1) atoms. O(1) is bonded to one Tb(2) and three equivalent Tb(1) atoms to form OTb4 tetrahedra that share corners with four equivalent O(1)Tb4 tetrahedra, corners with three equivalent S(1)Tb5 trigonal bipyramids,  an edgeedge with one O(1)Tb4 tetrahedra, and edges with two equivalent S(1)Tb5 trigonal bipyramids. is represented by the CIF file [CIF]
data_Tb2S2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.920
_cell_length_b   6.879
_cell_length_c   8.294
_cell_angle_alpha   80.644
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   389.598
_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
  Tb  Tb0  1  0.358  0.179  0.577  1.0
  Tb  Tb1  1  0.858  0.321  0.423  1.0
  Tb  Tb2  1  0.642  0.821  0.423  1.0
  Tb  Tb3  1  0.142  0.679  0.577  1.0
  Tb  Tb4  1  0.447  0.249  0.138  1.0
  Tb  Tb5  1  0.947  0.251  0.862  1.0
  Tb  Tb6  1  0.553  0.751  0.862  1.0
  Tb  Tb7  1  0.053  0.749  0.138  1.0
  S  S8  1  0.723  0.970  0.077  1.0
  S  S9  1  0.223  0.530  0.923  1.0
  S  S10  1  0.277  0.030  0.923  1.0
  S  S11  1  0.777  0.470  0.077  1.0
  S  S12  1  0.864  0.926  0.680  1.0
  S  S13  1  0.364  0.574  0.320  1.0
  S  S14  1  0.136  0.074  0.320  1.0
  S  S15  1  0.636  0.426  0.680  1.0
  O  O16  1  0.913  0.649  0.383  1.0
  O  O17  1  0.413  0.851  0.617  1.0
  O  O18  1  0.087  0.351  0.617  1.0
  O  O19  1  0.587  0.149  0.383  1.0
[/CIF]
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The crystal structure described by Tb2S2O crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 3-coordinate geometry to one S(1), three equivalent S(2), and three equivalent O(1) atoms. In the second Tb site, Tb(2) is bonded in a 7-coordinate geometry to two equivalent S(2), four equivalent S(1), and one O(1) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Tb(1) and four equivalent Tb(2) atoms to form distorted STb5 trigonal bipyramids that share corners with three equivalent O(1)Tb4 tetrahedra, corners with four equivalent S(1)Tb5 trigonal bipyramids, edges with two equivalent O(1)Tb4 tetrahedra, and edges with four equivalent S(1)Tb5 trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent Tb(2) and three equivalent Tb(1) atoms. O(1) is bonded to one Tb(2) and three equivalent Tb(1) atoms to form OTb4 tetrahedra that share corners with four equivalent O(1)Tb4 tetrahedra, corners with three equivalent S(1)Tb5 trigonal bipyramids,  an edgeedge with one O(1)Tb4 tetrahedra, and edges with two equivalent S(1)Tb5 trigonal bipyramids. is represented by the CIF file [CIF]
data_Tb2S2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.920
_cell_length_b   6.879
_cell_length_c   8.294
_cell_angle_alpha   80.644
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   389.598
_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
  Tb  Tb0  1  0.358  0.179  0.577  1.0
  Tb  Tb1  1  0.858  0.321  0.423  1.0
  Tb  Tb2  1  0.642  0.821  0.423  1.0
  Tb  Tb3  1  0.142  0.679  0.577  1.0
  Tb  Tb4  1  0.447  0.249  0.138  1.0
  Tb  Tb5  1  0.947  0.251  0.862  1.0
  Tb  Tb6  1  0.553  0.751  0.862  1.0
  Tb  Tb7  1  0.053  0.749  0.138  1.0
  S  S8  1  0.723  0.970  0.077  1.0
  S  S9  1  0.223  0.530  0.923  1.0
  S  S10  1  0.277  0.030  0.923  1.0
  S  S11  1  0.777  0.470  0.077  1.0
  S  S12  1  0.864  0.926  0.680  1.0
  S  S13  1  0.364  0.574  0.320  1.0
  S  S14  1  0.136  0.074  0.320  1.0
  S  S15  1  0.636  0.426  0.680  1.0
  O  O16  1  0.913  0.649  0.383  1.0
  O  O17  1  0.413  0.851  0.617  1.0
  O  O18  1  0.087  0.351  0.617  1.0
  O  O19  1  0.587  0.149  0.383  1.0
[/CIF]
.