data_[Na10Mg10]
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
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [5.3572]
_cell_length_b [16.6385]
_cell_length_c [5.8739]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [NaMg]
_chemical_formula_sum '[Na10 Mg10]'
_cell_volume [523.5729]
_cell_formula_units_Z [10]
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  0.1981  0.5981  1
  Na  Na1  4  0.5000  0.1971  0.2695  1
  Na  Na2  2  0.0000  0.0000  0.5842  1
  Mg  Mg3  4  0.0000  0.0927  0.0848  1
  Mg  Mg4  4  0.5000  0.0927  0.7859  1
  Mg  Mg5  2  0.5000  0.0000  0.2721  1
]