data_[Na1Si1O3]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P4mm]
_cell_length_a [3.1630]
_cell_length_b [3.1630]
_cell_length_c [5.7174]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [99]
_chemical_formula_structural [NaSiO3]
_chemical_formula_sum '[Na1 Si1 O3]'
_cell_volume [57.1989]
_cell_formula_units_Z [1]
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  1  0.5000  0.5000  0.4560  1
  Si  Si1  1  0.0000  0.0000  0.8656  1
  O  O2  2  0.0000  0.5000  0.7429  1
  O  O3  1  0.5000  0.5000  0.0927  1
]