data_[Na4Si4Pt4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Si  1.9000  1.1000  0.5400
  Pt  2.2800  1.3500  0.8050
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [6.6905]
_cell_length_b [8.8209]
_cell_length_c [7.1748]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.3016]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaSiPtO5]
_chemical_formula_sum '[Na4 Si4 Pt4 O20]'
_cell_volume [379.5934]
_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
[
  Na  Na0  4  0.0000  0.3413  0.7500  1.0
  Si  Si1  4  0.0000  0.3089  0.2500  1.0
  Pt  Pt2  4  0.0000  0.0000  0.0000  1.0
  O  O3  8  0.1116  0.2071  0.1276  1.0
  O  O4  8  0.1862  0.4280  0.4143  1.0
  O  O5  4  0.0000  0.0861  0.7500  1.0
]