data_[Dy6Er2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Dy  1.2200  1.7500  1.1310
  Er  1.2400  1.7500  1.0300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2/c]
_cell_length_a [7.0755]
_cell_length_b [8.0407]
_cell_length_c [7.0674]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.2114]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [Dy3ErSe4]
_chemical_formula_sum '[Dy6 Er2 Se8]'
_cell_volume [379.6871]
_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
[
  Dy  Dy0  2  0.0000  0.3756  0.7500  1
  Dy  Dy1  2  0.5000  0.1257  0.7500  1
  Dy  Dy2  2  0.5000  0.3758  0.2500  1
  Er  Er3  2  0.0000  0.1256  0.2500  1
  Se  Se4  4  0.2475  0.1236  0.0002  1
  Se  Se5  4  0.2487  0.3736  0.4986  1
]