The crystal structure described by Sm2S2O crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Sm sites. In the first Sm site, Sm(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 Sm site, Sm(2) is bonded in a 7-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 Sm(2) and four equivalent Sm(1) atoms to form distorted SSm5 trigonal bipyramids that share corners with three equivalent O(1)Sm4 tetrahedra, corners with four equivalent S(1)Sm5 trigonal bipyramids, edges with two equivalent O(1)Sm4 tetrahedra, and edges with four equivalent S(1)Sm5 trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent Sm(1) and three equivalent Sm(2) atoms. O(1) is bonded to one Sm(1) and three equivalent Sm(2) atoms to form OSm4 tetrahedra that share corners with four equivalent O(1)Sm4 tetrahedra, corners with three equivalent S(1)Sm5 trigonal bipyramids,  an edgeedge with one O(1)Sm4 tetrahedra, and edges with two equivalent S(1)Sm5 trigonal bipyramids. is represented by the CIF file [CIF]
data_Sm2S2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.074
_cell_length_b   7.000
_cell_length_c   8.445
_cell_angle_alpha   81.007
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   413.029
_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
  Sm  Sm0  1  0.055  0.251  0.862  1.0
  Sm  Sm1  1  0.555  0.249  0.138  1.0
  Sm  Sm2  1  0.945  0.749  0.138  1.0
  Sm  Sm3  1  0.445  0.751  0.862  1.0
  Sm  Sm4  1  0.138  0.317  0.421  1.0
  Sm  Sm5  1  0.638  0.183  0.579  1.0
  Sm  Sm6  1  0.862  0.683  0.579  1.0
  Sm  Sm7  1  0.362  0.817  0.421  1.0
  S  S8  1  0.724  0.029  0.922  1.0
  S  S9  1  0.641  0.568  0.322  1.0
  S  S10  1  0.359  0.432  0.678  1.0
  S  S11  1  0.859  0.068  0.322  1.0
  S  S12  1  0.224  0.471  0.078  1.0
  S  S13  1  0.276  0.971  0.078  1.0
  S  S14  1  0.776  0.529  0.922  1.0
  S  S15  1  0.141  0.932  0.678  1.0
  O  O16  1  0.087  0.649  0.383  1.0
  O  O17  1  0.413  0.149  0.383  1.0
  O  O18  1  0.913  0.351  0.617  1.0
  O  O19  1  0.587  0.851  0.617  1.0
[/CIF]
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The crystal structure described by Sm2S2O crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Sm sites. In the first Sm site, Sm(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 Sm site, Sm(2) is bonded in a 7-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 Sm(2) and four equivalent Sm(1) atoms to form distorted SSm5 trigonal bipyramids that share corners with three equivalent O(1)Sm4 tetrahedra, corners with four equivalent S(1)Sm5 trigonal bipyramids, edges with two equivalent O(1)Sm4 tetrahedra, and edges with four equivalent S(1)Sm5 trigonal bipyramids. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent Sm(1) and three equivalent Sm(2) atoms. O(1) is bonded to one Sm(1) and three equivalent Sm(2) atoms to form OSm4 tetrahedra that share corners with four equivalent O(1)Sm4 tetrahedra, corners with three equivalent S(1)Sm5 trigonal bipyramids,  an edgeedge with one O(1)Sm4 tetrahedra, and edges with two equivalent S(1)Sm5 trigonal bipyramids. is represented by the CIF file [CIF]
data_Sm2S2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.074
_cell_length_b   7.000
_cell_length_c   8.445
_cell_angle_alpha   81.007
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   413.029
_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
  Sm  Sm0  1  0.055  0.251  0.862  1.0
  Sm  Sm1  1  0.555  0.249  0.138  1.0
  Sm  Sm2  1  0.945  0.749  0.138  1.0
  Sm  Sm3  1  0.445  0.751  0.862  1.0
  Sm  Sm4  1  0.138  0.317  0.421  1.0
  Sm  Sm5  1  0.638  0.183  0.579  1.0
  Sm  Sm6  1  0.862  0.683  0.579  1.0
  Sm  Sm7  1  0.362  0.817  0.421  1.0
  S  S8  1  0.724  0.029  0.922  1.0
  S  S9  1  0.641  0.568  0.322  1.0
  S  S10  1  0.359  0.432  0.678  1.0
  S  S11  1  0.859  0.068  0.322  1.0
  S  S12  1  0.224  0.471  0.078  1.0
  S  S13  1  0.276  0.971  0.078  1.0
  S  S14  1  0.776  0.529  0.922  1.0
  S  S15  1  0.141  0.932  0.678  1.0
  O  O16  1  0.087  0.649  0.383  1.0
  O  O17  1  0.413  0.149  0.383  1.0
  O  O18  1  0.913  0.351  0.617  1.0
  O  O19  1  0.587  0.851  0.617  1.0
[/CIF]
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