data_[Na2Li2Mg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Li  0.9800  1.4500  0.9000
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [5.7308]
_cell_length_b [3.1457]
_cell_length_c [11.0144]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.3716]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [NaLiMg2]
_chemical_formula_sum '[Na2 Li2 Mg4]'
_cell_volume [193.9527]
_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  0.0117  0.5000  0.5004  1
  Li  Li1  2  0.3296  0.0000  0.9999  1
  Mg  Mg2  2  0.2303  0.5000  0.2275  1
  Mg  Mg3  2  0.4284  0.5000  0.7721  1
]