data_[Sr8Ca4I24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ca  1.0000  1.8000  1.1400
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [Cmce]
_cell_length_a [24.0745]
_cell_length_b [8.0599]
_cell_length_c [8.0249]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [Sr2CaI6]
_chemical_formula_sum '[Sr8 Ca4 I24]'
_cell_volume [1557.1476]
_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
[
  Sr  Sr0  8  0.1657  0.0000  0.0000  1.0
  Ca  Ca1  4  0.0000  0.0000  0.5000  1.0
  I  I2  16  0.0840  0.2097  0.2859  1.0
  I  I3  8  0.2500  0.2260  0.7500  1.0
]