data_[Ba4Ca8Zn4Se16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Ca  1.0000  1.8000  1.1400
  Zn  1.6500  1.3500  0.8800
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.2439]
_cell_length_b [14.3813]
_cell_length_c [14.6906]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [BaCa2ZnSe4]
_chemical_formula_sum '[Ba4 Ca8 Zn4 Se16]'
_cell_volume [896.6095]
_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
[
  Ba  Ba0  4  0.0000  0.1157  0.7500  1.0
  Ca  Ca1  8  0.0000  0.3713  0.5530  1.0
  Zn  Zn2  4  0.0000  0.1599  0.2500  1.0
  Se  Se3  8  0.0000  0.2644  0.1183  1.0
  Se  Se4  4  0.0000  0.0000  0.0000  1.0
  Se  Se5  4  0.0000  0.4375  0.7500  1.0
]