data_[Na2Mg4In2Se8]
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
  In  1.7800  1.5500  0.9400
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [I-42m]
_cell_length_a [6.2845]
_cell_length_b [6.2845]
_cell_length_c [11.7849]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [121]
_chemical_formula_structural [NaMg2InSe4]
_chemical_formula_sum '[Na2 Mg4 In2 Se8]'
_cell_volume [465.4524]
_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  0.5000  1
  Mg  Mg1  4  0.0000  0.5000  0.2500  1
  In  In2  2  0.0000  0.0000  0.0000  1
  Se  Se3  8  0.2357  0.2357  0.8662  1
]