data_[Na2P8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [6.1702]
_cell_length_b [4.8666]
_cell_length_c [7.8342]
_cell_angle_alpha [90.0000]
_cell_angle_beta [97.4311]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [NaP4]
_chemical_formula_sum '[Na2 P8]'
_cell_volume [233.2660]
_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  2  0.0000  0.0000  0.0000  1
  P  P1  4  0.2932  0.6953  0.2585  1
  P  P2  4  0.4160  0.1148  0.5990  1
]