data_[Na4Ca2Os2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ca  1.0000  1.8000  1.1400
  Os  2.2000  1.3000  0.6730
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [5.6231]
_cell_length_b [5.8065]
_cell_length_c [9.8116]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.6857]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Na2CaOsO6]
_chemical_formula_sum '[Na4 Ca2 Os2 O12]'
_cell_volume [263.4211]
_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
[
  Na  Na0  4  0.2411  0.5462  0.7530  1
  Ca  Ca1  2  0.5000  0.0000  0.0000  1
  Os  Os2  2  0.0000  0.0000  0.5000  1
  O  O3  4  0.1102  0.7329  0.4413  1
  O  O4  4  0.2255  0.1771  0.4552  1
  O  O5  4  0.3178  0.5370  0.2205  1
]