The material structure described by Tm2S2O crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 7-coordinate geometry to two equivalent S(2), four equivalent S(1), and one O(1) atom. In the second Tm site, Tm(2) is bonded in a 3-coordinate geometry to one S(1), three equivalent S(2), and three equivalent O(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Tm(2) and four equivalent Tm(1) atoms to form distorted STm5 trigonal bipyramids that share corners with three equivalent O(1)Tm4 tetrahedra, corners with four equivalent S(1)Tm5 trigonal bipyramids, edges with two equivalent O(1)Tm4 tetrahedra, and edges with four equivalent S(1)Tm5 trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent Tm(1) and three equivalent Tm(2) atoms. O(1) is bonded to one Tm(1) and three equivalent Tm(2) atoms to form OTm4 tetrahedra that share corners with four equivalent O(1)Tm4 tetrahedra, corners with three equivalent S(1)Tm5 trigonal bipyramids,  an edgeedge with one O(1)Tm4 tetrahedra, and edges with two equivalent S(1)Tm5 trigonal bipyramids. is represented by the CIF card [CIF]
data_Tm2S2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.797
_cell_length_b   6.798
_cell_length_c   8.185
_cell_angle_alpha   80.488
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   373.007
_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
  Tm  Tm0  1  0.053  0.751  0.139  1.0
  Tm  Tm1  1  0.553  0.749  0.861  1.0
  Tm  Tm2  1  0.947  0.249  0.861  1.0
  Tm  Tm3  1  0.447  0.251  0.139  1.0
  Tm  Tm4  1  0.146  0.676  0.575  1.0
  Tm  Tm5  1  0.646  0.824  0.425  1.0
  Tm  Tm6  1  0.854  0.324  0.425  1.0
  Tm  Tm7  1  0.354  0.176  0.575  1.0
  S  S8  1  0.777  0.470  0.075  1.0
  S  S9  1  0.277  0.030  0.925  1.0
  S  S10  1  0.223  0.530  0.925  1.0
  S  S11  1  0.723  0.970  0.075  1.0
  S  S12  1  0.869  0.919  0.682  1.0
  S  S13  1  0.369  0.581  0.318  1.0
  S  S14  1  0.131  0.081  0.318  1.0
  S  S15  1  0.631  0.419  0.682  1.0
  O  O16  1  0.587  0.150  0.383  1.0
  O  O17  1  0.087  0.350  0.617  1.0
  O  O18  1  0.413  0.850  0.617  1.0
  O  O19  1  0.913  0.650  0.383  1.0
[/CIF]
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The material structure described by Tm2S2O crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 7-coordinate geometry to two equivalent S(2), four equivalent S(1), and one O(1) atom. In the second Tm site, Tm(2) is bonded in a 3-coordinate geometry to one S(1), three equivalent S(2), and three equivalent O(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Tm(2) and four equivalent Tm(1) atoms to form distorted STm5 trigonal bipyramids that share corners with three equivalent O(1)Tm4 tetrahedra, corners with four equivalent S(1)Tm5 trigonal bipyramids, edges with two equivalent O(1)Tm4 tetrahedra, and edges with four equivalent S(1)Tm5 trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent Tm(1) and three equivalent Tm(2) atoms. O(1) is bonded to one Tm(1) and three equivalent Tm(2) atoms to form OTm4 tetrahedra that share corners with four equivalent O(1)Tm4 tetrahedra, corners with three equivalent S(1)Tm5 trigonal bipyramids,  an edgeedge with one O(1)Tm4 tetrahedra, and edges with two equivalent S(1)Tm5 trigonal bipyramids. is represented by the CIF card [CIF]
data_Tm2S2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.797
_cell_length_b   6.798
_cell_length_c   8.185
_cell_angle_alpha   80.488
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   373.007
_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
  Tm  Tm0  1  0.053  0.751  0.139  1.0
  Tm  Tm1  1  0.553  0.749  0.861  1.0
  Tm  Tm2  1  0.947  0.249  0.861  1.0
  Tm  Tm3  1  0.447  0.251  0.139  1.0
  Tm  Tm4  1  0.146  0.676  0.575  1.0
  Tm  Tm5  1  0.646  0.824  0.425  1.0
  Tm  Tm6  1  0.854  0.324  0.425  1.0
  Tm  Tm7  1  0.354  0.176  0.575  1.0
  S  S8  1  0.777  0.470  0.075  1.0
  S  S9  1  0.277  0.030  0.925  1.0
  S  S10  1  0.223  0.530  0.925  1.0
  S  S11  1  0.723  0.970  0.075  1.0
  S  S12  1  0.869  0.919  0.682  1.0
  S  S13  1  0.369  0.581  0.318  1.0
  S  S14  1  0.131  0.081  0.318  1.0
  S  S15  1  0.631  0.419  0.682  1.0
  O  O16  1  0.587  0.150  0.383  1.0
  O  O17  1  0.087  0.350  0.617  1.0
  O  O18  1  0.413  0.850  0.617  1.0
  O  O19  1  0.913  0.650  0.383  1.0
[/CIF]
.