data_[Cs2K2Mg2I8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  K  0.8200  2.2000  1.5200
  Mg  1.3100  1.5000  0.8600
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [8.3236]
_cell_length_b [8.4055]
_cell_length_c [10.4792]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.9306]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CsKMgI4]
_chemical_formula_sum '[Cs2 K2 Mg2 I8]'
_cell_volume [697.5619]
_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
[
  Cs  Cs0  2  0.2601  0.2500  0.0631  1.0
  K  K1  2  0.2281  0.2500  0.5555  1.0
  Mg  Mg2  2  0.2244  0.7500  0.3161  1.0
  I  I3  4  0.0028  0.0024  0.2643  1.0
  I  I4  2  0.4108  0.7500  0.1404  1.0
  I  I5  2  0.4233  0.7500  0.5768  1.0
]