data_[Cs2Er2Ag2Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Er  1.2400  1.7500  1.0300
  Ag  1.9300  1.6000  1.0867
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [9.6007]
_cell_length_b [4.1525]
_cell_length_c [10.4602]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.4061]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CsErAgSe3]
_chemical_formula_sum '[Cs2 Er2 Ag2 Se6]'
_cell_volume [382.6960]
_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  0.2199  0.7500  0.2474  1.0
  Er  Er1  2  0.3243  0.2500  0.8584  1.0
  Ag  Ag2  2  0.0782  0.7500  0.6042  1.0
  Se  Se3  2  0.1276  0.7500  0.8706  1.0
  Se  Se4  2  0.2250  0.2500  0.5575  1.0
  Se  Se5  2  0.4746  0.2500  0.1522  1.0
]