data_[Na4Mg4P4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mg  1.3100  1.5000  0.8600
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [7.3588]
_cell_length_b [4.2911]
_cell_length_c [7.7161]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [NaMgP]
_chemical_formula_sum '[Na4 Mg4 P4]'
_cell_volume [243.6534]
_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  0.0186  0.2500  0.1672  1.0
  Mg  Mg1  4  0.1453  0.2500  0.5740  1.0
  P  P2  4  0.2128  0.7500  0.3894  1.0
]