data_[Sr6Dy2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Dy  1.2200  1.7500  1.1310
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [8.7125]
_cell_length_b [12.2640]
_cell_length_c [4.3179]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Sr3DySe4]
_chemical_formula_sum '[Sr6 Dy2 Se8]'
_cell_volume [461.3642]
_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
[
  Sr  Sr0  4  0.2500  0.2500  0.0000  1
  Sr  Sr1  2  0.0000  0.5000  0.5000  1
  Dy  Dy2  2  0.0000  0.0000  0.5000  1
  Se  Se3  4  0.0000  0.2406  0.5000  1
  Se  Se4  4  0.2338  0.0000  0.0000  1
]