The structure described by K2SeS2O6 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one O(4), one O(5), one O(6), two equivalent O(2), and two equivalent O(3) atoms. In the second K site, K(2) is bonded in a distorted pentagonal pyramidal geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Se(1) is bonded in a distorted water-like geometry to one S(1) and one S(2) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded in a trigonal non-coplanar geometry to one Se(1), one O(4), one O(5), and one O(6) atom. In the second S site, S(2) is bonded in a trigonal non-coplanar geometry to one Se(1), one O(1), one O(2), and one O(3) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one K(2) and one S(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one S(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one S(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one S(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one K(1), one K(2), and one S(1) atom. is represented by the CIF card [CIF]
data_K2Se(SO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.050
_cell_length_b   9.737
_cell_length_c   15.756
_cell_angle_alpha   68.967
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   866.290
_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
  K  K0  1  0.721  0.446  0.680  1.0
  K  K1  1  0.221  0.554  0.820  1.0
  K  K2  1  0.735  0.224  0.468  1.0
  K  K3  1  0.265  0.776  0.532  1.0
  K  K4  1  0.279  0.554  0.320  1.0
  K  K5  1  0.235  0.776  0.032  1.0
  K  K6  1  0.779  0.446  0.180  1.0
  K  K7  1  0.765  0.224  0.968  1.0
  Se  Se8  1  0.669  0.873  0.297  1.0
  Se  Se9  1  0.331  0.127  0.703  1.0
  Se  Se10  1  0.169  0.127  0.203  1.0
  Se  Se11  1  0.831  0.873  0.797  1.0
  S  S12  1  0.290  0.339  0.090  1.0
  S  S13  1  0.740  0.808  0.173  1.0
  S  S14  1  0.790  0.661  0.410  1.0
  S  S15  1  0.260  0.192  0.827  1.0
  S  S16  1  0.210  0.339  0.590  1.0
  S  S17  1  0.760  0.808  0.673  1.0
  S  S18  1  0.710  0.661  0.910  1.0
  S  S19  1  0.240  0.192  0.327  1.0
  O  O20  1  0.765  0.950  0.597  1.0
  O  O21  1  0.956  0.733  0.187  1.0
  O  O22  1  0.443  0.291  0.830  1.0
  O  O23  1  0.272  0.461  0.621  1.0
  O  O24  1  0.335  0.334  0.512  1.0
  O  O25  1  0.544  0.733  0.687  1.0
  O  O26  1  0.228  0.461  0.121  1.0
  O  O27  1  0.265  0.050  0.903  1.0
  O  O28  1  0.728  0.539  0.379  1.0
  O  O29  1  0.530  0.326  0.082  1.0
  O  O30  1  0.456  0.267  0.313  1.0
  O  O31  1  0.943  0.709  0.670  1.0
  O  O32  1  0.835  0.666  0.988  1.0
  O  O33  1  0.044  0.267  0.813  1.0
  O  O34  1  0.735  0.950  0.097  1.0
  O  O35  1  0.030  0.674  0.418  1.0
  O  O36  1  0.970  0.326  0.582  1.0
  O  O37  1  0.235  0.050  0.403  1.0
  O  O38  1  0.470  0.674  0.918  1.0
  O  O39  1  0.057  0.291  0.330  1.0
  O  O40  1  0.772  0.539  0.879  1.0
  O  O41  1  0.165  0.334  0.012  1.0
  O  O42  1  0.665  0.666  0.488  1.0
  O  O43  1  0.557  0.709  0.170  1.0
[/CIF]
.
The structure described by K2SeS2O6 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one O(4), one O(5), one O(6), two equivalent O(2), and two equivalent O(3) atoms. In the second K site, K(2) is bonded in a distorted pentagonal pyramidal geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Se(1) is bonded in a distorted water-like geometry to one S(1) and one S(2) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded in a trigonal non-coplanar geometry to one Se(1), one O(4), one O(5), and one O(6) atom. In the second S site, S(2) is bonded in a trigonal non-coplanar geometry to one Se(1), one O(1), one O(2), and one O(3) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one K(2) and one S(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one S(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one S(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one S(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one K(1), one K(2), and one S(1) atom. is represented by the CIF card [CIF]
data_K2Se(SO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.050
_cell_length_b   9.737
_cell_length_c   15.756
_cell_angle_alpha   68.967
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   866.290
_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
  K  K0  1  0.721  0.446  0.680  1.0
  K  K1  1  0.221  0.554  0.820  1.0
  K  K2  1  0.735  0.224  0.468  1.0
  K  K3  1  0.265  0.776  0.532  1.0
  K  K4  1  0.279  0.554  0.320  1.0
  K  K5  1  0.235  0.776  0.032  1.0
  K  K6  1  0.779  0.446  0.180  1.0
  K  K7  1  0.765  0.224  0.968  1.0
  Se  Se8  1  0.669  0.873  0.297  1.0
  Se  Se9  1  0.331  0.127  0.703  1.0
  Se  Se10  1  0.169  0.127  0.203  1.0
  Se  Se11  1  0.831  0.873  0.797  1.0
  S  S12  1  0.290  0.339  0.090  1.0
  S  S13  1  0.740  0.808  0.173  1.0
  S  S14  1  0.790  0.661  0.410  1.0
  S  S15  1  0.260  0.192  0.827  1.0
  S  S16  1  0.210  0.339  0.590  1.0
  S  S17  1  0.760  0.808  0.673  1.0
  S  S18  1  0.710  0.661  0.910  1.0
  S  S19  1  0.240  0.192  0.327  1.0
  O  O20  1  0.765  0.950  0.597  1.0
  O  O21  1  0.956  0.733  0.187  1.0
  O  O22  1  0.443  0.291  0.830  1.0
  O  O23  1  0.272  0.461  0.621  1.0
  O  O24  1  0.335  0.334  0.512  1.0
  O  O25  1  0.544  0.733  0.687  1.0
  O  O26  1  0.228  0.461  0.121  1.0
  O  O27  1  0.265  0.050  0.903  1.0
  O  O28  1  0.728  0.539  0.379  1.0
  O  O29  1  0.530  0.326  0.082  1.0
  O  O30  1  0.456  0.267  0.313  1.0
  O  O31  1  0.943  0.709  0.670  1.0
  O  O32  1  0.835  0.666  0.988  1.0
  O  O33  1  0.044  0.267  0.813  1.0
  O  O34  1  0.735  0.950  0.097  1.0
  O  O35  1  0.030  0.674  0.418  1.0
  O  O36  1  0.970  0.326  0.582  1.0
  O  O37  1  0.235  0.050  0.403  1.0
  O  O38  1  0.470  0.674  0.918  1.0
  O  O39  1  0.057  0.291  0.330  1.0
  O  O40  1  0.772  0.539  0.879  1.0
  O  O41  1  0.165  0.334  0.012  1.0
  O  O42  1  0.665  0.666  0.488  1.0
  O  O43  1  0.557  0.709  0.170  1.0
[/CIF]
.