The crystal structure described by KPtS2O9 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 9-coordinate geometry to one O(2), one O(5), one O(7), two equivalent O(3), two equivalent O(4), and two equivalent O(8) atoms. Pt(1) is bonded to one O(1), one O(2), one O(5), one O(6), and one O(9) atom to form PtO5 square pyramids that share corners with two equivalent S(1)O4 tetrahedra and corners with two equivalent S(2)O4 tetrahedra. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SO4 tetrahedra that share corners with two equivalent Pt(1)O5 square pyramids. In the second S site, S(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form SO4 tetrahedra that share corners with two equivalent Pt(1)O5 square pyramids. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Pt(1) and one S(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one K(1), one Pt(1), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent K(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent K(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one K(1), one Pt(1), and one S(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Pt(1) and one S(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one K(1) and one S(2) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to two equivalent K(1) and one S(2) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one Pt(1) atom. is represented by the CIF file [CIF]
data_KPtS2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.618
_cell_length_b   7.709
_cell_length_c   7.779
_cell_angle_alpha   102.061
_cell_angle_beta   112.137
_cell_angle_gamma   99.292
_symmetry_Int_Tables_number   1
_cell_volume   398.977
_cell_formula_units_Z   2
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  0.785  0.043  0.283  1.0
  K  K1  1  0.215  0.957  0.717  1.0
  Pt  Pt2  1  0.864  0.549  0.874  1.0
  Pt  Pt3  1  0.136  0.451  0.126  1.0
  S  S4  1  0.771  0.127  0.825  1.0
  S  S5  1  0.229  0.873  0.175  1.0
  S  S6  1  0.813  0.555  0.257  1.0
  S  S7  1  0.187  0.445  0.743  1.0
  O  O8  1  0.683  0.292  0.791  1.0
  O  O9  1  0.317  0.708  0.209  1.0
  O  O10  1  0.056  0.802  0.966  1.0
  O  O11  1  0.944  0.198  0.034  1.0
  O  O12  1  0.623  0.994  0.840  1.0
  O  O13  1  0.377  0.006  0.160  1.0
  O  O14  1  0.841  0.062  0.681  1.0
  O  O15  1  0.159  0.938  0.319  1.0
  O  O16  1  0.766  0.633  0.079  1.0
  O  O17  1  0.234  0.367  0.921  1.0
  O  O18  1  0.969  0.456  0.677  1.0
  O  O19  1  0.031  0.544  0.323  1.0
  O  O20  1  0.683  0.376  0.207  1.0
  O  O21  1  0.317  0.624  0.793  1.0
  O  O22  1  0.814  0.702  0.409  1.0
  O  O23  1  0.186  0.298  0.591  1.0
  O  O24  1  0.661  0.621  0.681  1.0
  O  O25  1  0.339  0.379  0.319  1.0
[/CIF]
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The crystal structure described by KPtS2O9 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 9-coordinate geometry to one O(2), one O(5), one O(7), two equivalent O(3), two equivalent O(4), and two equivalent O(8) atoms. Pt(1) is bonded to one O(1), one O(2), one O(5), one O(6), and one O(9) atom to form PtO5 square pyramids that share corners with two equivalent S(1)O4 tetrahedra and corners with two equivalent S(2)O4 tetrahedra. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SO4 tetrahedra that share corners with two equivalent Pt(1)O5 square pyramids. In the second S site, S(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form SO4 tetrahedra that share corners with two equivalent Pt(1)O5 square pyramids. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Pt(1) and one S(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one K(1), one Pt(1), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent K(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent K(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one K(1), one Pt(1), and one S(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Pt(1) and one S(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one K(1) and one S(2) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to two equivalent K(1) and one S(2) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one Pt(1) atom. is represented by the CIF file [CIF]
data_KPtS2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.618
_cell_length_b   7.709
_cell_length_c   7.779
_cell_angle_alpha   102.061
_cell_angle_beta   112.137
_cell_angle_gamma   99.292
_symmetry_Int_Tables_number   1
_cell_volume   398.977
_cell_formula_units_Z   2
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  0.785  0.043  0.283  1.0
  K  K1  1  0.215  0.957  0.717  1.0
  Pt  Pt2  1  0.864  0.549  0.874  1.0
  Pt  Pt3  1  0.136  0.451  0.126  1.0
  S  S4  1  0.771  0.127  0.825  1.0
  S  S5  1  0.229  0.873  0.175  1.0
  S  S6  1  0.813  0.555  0.257  1.0
  S  S7  1  0.187  0.445  0.743  1.0
  O  O8  1  0.683  0.292  0.791  1.0
  O  O9  1  0.317  0.708  0.209  1.0
  O  O10  1  0.056  0.802  0.966  1.0
  O  O11  1  0.944  0.198  0.034  1.0
  O  O12  1  0.623  0.994  0.840  1.0
  O  O13  1  0.377  0.006  0.160  1.0
  O  O14  1  0.841  0.062  0.681  1.0
  O  O15  1  0.159  0.938  0.319  1.0
  O  O16  1  0.766  0.633  0.079  1.0
  O  O17  1  0.234  0.367  0.921  1.0
  O  O18  1  0.969  0.456  0.677  1.0
  O  O19  1  0.031  0.544  0.323  1.0
  O  O20  1  0.683  0.376  0.207  1.0
  O  O21  1  0.317  0.624  0.793  1.0
  O  O22  1  0.814  0.702  0.409  1.0
  O  O23  1  0.186  0.298  0.591  1.0
  O  O24  1  0.661  0.621  0.681  1.0
  O  O25  1  0.339  0.379  0.319  1.0
[/CIF]
.