data_[K2H4Pt2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  H  2.2000  0.2500  0.0000
  Pt  2.2800  1.3500  0.8050
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [5.0254]
_cell_length_b [6.5067]
_cell_length_c [7.4906]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [KH2PtO4]
_chemical_formula_sum '[K2 H4 Pt2 O8]'
_cell_volume [244.9349]
_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  2  0.0000  0.0000  0.0000  1
  H  H1  4  0.0000  0.5000  0.1651  1
  Pt  Pt2  2  0.0000  0.0000  0.5000  1
  O  O3  8  0.2376  0.5000  0.1825  1
]