The compound described by As2S2O9 is Indium-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four As2S2O9 clusters. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 3-coordinate geometry to one O(3), one O(7), and one O(9) atom. In the second As site, As(2) is bonded in a 3-coordinate geometry to one O(4), one O(8), and one O(9) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(5), one O(6), one O(7), and one O(8) atom. There are nine inequivalent O sites. In the first O site, O(9) is bonded in a bent 120 degrees geometry to one As(1) and one As(2) atom. In the second O site, O(1) is bonded in a single-bond geometry to one S(1) atom. In the third O site, O(2) is bonded in a single-bond geometry to one S(1) atom. In the fourth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one As(1) and one S(1) atom. In the fifth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one As(2) and one S(1) atom. In the sixth O site, O(5) is bonded in a single-bond geometry to one S(2) atom. In the seventh O site, O(6) is bonded in a single-bond geometry to one S(2) atom. In the eighth O site, O(7) is bonded in a distorted bent 120 degrees geometry to one As(1) and one S(2) atom. In the ninth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one As(2) and one S(2) atom. is represented by the CIF file [CIF]
data_As2S2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.637
_cell_length_b   6.698
_cell_length_c   16.633
_cell_angle_alpha   85.407
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   736.929
_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
  As  As0  1  0.759  0.803  0.467  1.0
  As  As1  1  0.741  0.803  0.967  1.0
  As  As2  1  0.613  0.682  0.294  1.0
  As  As3  1  0.887  0.682  0.794  1.0
  As  As4  1  0.113  0.318  0.206  1.0
  As  As5  1  0.387  0.318  0.706  1.0
  As  As6  1  0.259  0.197  0.033  1.0
  As  As7  1  0.241  0.197  0.533  1.0
  S  S8  1  0.074  0.773  0.325  1.0
  S  S9  1  0.426  0.773  0.825  1.0
  S  S10  1  0.724  0.353  0.432  1.0
  S  S11  1  0.776  0.353  0.932  1.0
  S  S12  1  0.574  0.227  0.175  1.0
  S  S13  1  0.926  0.227  0.675  1.0
  S  S14  1  0.224  0.647  0.068  1.0
  S  S15  1  0.276  0.647  0.568  1.0
  O  O16  1  0.107  0.972  0.290  1.0
  O  O17  1  0.393  0.972  0.790  1.0
  O  O18  1  0.240  0.636  0.323  1.0
  O  O19  1  0.260  0.636  0.823  1.0
  O  O20  1  0.011  0.780  0.414  1.0
  O  O21  1  0.489  0.780  0.914  1.0
  O  O22  1  0.898  0.674  0.283  1.0
  O  O23  1  0.602  0.674  0.783  1.0
  O  O24  1  0.923  0.294  0.412  1.0
  O  O25  1  0.577  0.294  0.912  1.0
  O  O26  1  0.600  0.199  0.472  1.0
  O  O27  1  0.900  0.199  0.972  1.0
  O  O28  1  0.729  0.527  0.487  1.0
  O  O29  1  0.771  0.527  0.987  1.0
  O  O30  1  0.610  0.433  0.356  1.0
  O  O31  1  0.890  0.433  0.856  1.0
  O  O32  1  0.382  0.168  0.624  1.0
  O  O33  1  0.118  0.168  0.124  1.0
  O  O34  1  0.882  0.832  0.876  1.0
  O  O35  1  0.618  0.832  0.376  1.0
  O  O36  1  0.271  0.473  0.513  1.0
  O  O37  1  0.229  0.473  0.013  1.0
  O  O38  1  0.390  0.567  0.644  1.0
  O  O39  1  0.110  0.567  0.144  1.0
  O  O40  1  0.400  0.801  0.528  1.0
  O  O41  1  0.100  0.801  0.028  1.0
  O  O42  1  0.077  0.706  0.588  1.0
  O  O43  1  0.423  0.706  0.088  1.0
  O  O44  1  0.989  0.220  0.586  1.0
  O  O45  1  0.511  0.220  0.086  1.0
  O  O46  1  0.102  0.326  0.717  1.0
  O  O47  1  0.398  0.326  0.217  1.0
  O  O48  1  0.760  0.364  0.677  1.0
  O  O49  1  0.740  0.364  0.177  1.0
  O  O50  1  0.893  0.028  0.710  1.0
  O  O51  1  0.607  0.028  0.210  1.0
[/CIF]
.
The compound described by As2S2O9 is Indium-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four As2S2O9 clusters. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 3-coordinate geometry to one O(3), one O(7), and one O(9) atom. In the second As site, As(2) is bonded in a 3-coordinate geometry to one O(4), one O(8), and one O(9) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(5), one O(6), one O(7), and one O(8) atom. There are nine inequivalent O sites. In the first O site, O(9) is bonded in a bent 120 degrees geometry to one As(1) and one As(2) atom. In the second O site, O(1) is bonded in a single-bond geometry to one S(1) atom. In the third O site, O(2) is bonded in a single-bond geometry to one S(1) atom. In the fourth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one As(1) and one S(1) atom. In the fifth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one As(2) and one S(1) atom. In the sixth O site, O(5) is bonded in a single-bond geometry to one S(2) atom. In the seventh O site, O(6) is bonded in a single-bond geometry to one S(2) atom. In the eighth O site, O(7) is bonded in a distorted bent 120 degrees geometry to one As(1) and one S(2) atom. In the ninth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one As(2) and one S(2) atom. is represented by the CIF file [CIF]
data_As2S2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.637
_cell_length_b   6.698
_cell_length_c   16.633
_cell_angle_alpha   85.407
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   736.929
_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
  As  As0  1  0.759  0.803  0.467  1.0
  As  As1  1  0.741  0.803  0.967  1.0
  As  As2  1  0.613  0.682  0.294  1.0
  As  As3  1  0.887  0.682  0.794  1.0
  As  As4  1  0.113  0.318  0.206  1.0
  As  As5  1  0.387  0.318  0.706  1.0
  As  As6  1  0.259  0.197  0.033  1.0
  As  As7  1  0.241  0.197  0.533  1.0
  S  S8  1  0.074  0.773  0.325  1.0
  S  S9  1  0.426  0.773  0.825  1.0
  S  S10  1  0.724  0.353  0.432  1.0
  S  S11  1  0.776  0.353  0.932  1.0
  S  S12  1  0.574  0.227  0.175  1.0
  S  S13  1  0.926  0.227  0.675  1.0
  S  S14  1  0.224  0.647  0.068  1.0
  S  S15  1  0.276  0.647  0.568  1.0
  O  O16  1  0.107  0.972  0.290  1.0
  O  O17  1  0.393  0.972  0.790  1.0
  O  O18  1  0.240  0.636  0.323  1.0
  O  O19  1  0.260  0.636  0.823  1.0
  O  O20  1  0.011  0.780  0.414  1.0
  O  O21  1  0.489  0.780  0.914  1.0
  O  O22  1  0.898  0.674  0.283  1.0
  O  O23  1  0.602  0.674  0.783  1.0
  O  O24  1  0.923  0.294  0.412  1.0
  O  O25  1  0.577  0.294  0.912  1.0
  O  O26  1  0.600  0.199  0.472  1.0
  O  O27  1  0.900  0.199  0.972  1.0
  O  O28  1  0.729  0.527  0.487  1.0
  O  O29  1  0.771  0.527  0.987  1.0
  O  O30  1  0.610  0.433  0.356  1.0
  O  O31  1  0.890  0.433  0.856  1.0
  O  O32  1  0.382  0.168  0.624  1.0
  O  O33  1  0.118  0.168  0.124  1.0
  O  O34  1  0.882  0.832  0.876  1.0
  O  O35  1  0.618  0.832  0.376  1.0
  O  O36  1  0.271  0.473  0.513  1.0
  O  O37  1  0.229  0.473  0.013  1.0
  O  O38  1  0.390  0.567  0.644  1.0
  O  O39  1  0.110  0.567  0.144  1.0
  O  O40  1  0.400  0.801  0.528  1.0
  O  O41  1  0.100  0.801  0.028  1.0
  O  O42  1  0.077  0.706  0.588  1.0
  O  O43  1  0.423  0.706  0.088  1.0
  O  O44  1  0.989  0.220  0.586  1.0
  O  O45  1  0.511  0.220  0.086  1.0
  O  O46  1  0.102  0.326  0.717  1.0
  O  O47  1  0.398  0.326  0.217  1.0
  O  O48  1  0.760  0.364  0.677  1.0
  O  O49  1  0.740  0.364  0.177  1.0
  O  O50  1  0.893  0.028  0.710  1.0
  O  O51  1  0.607  0.028  0.210  1.0
[/CIF]
.