data_[Cs2Tb2Sn2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Tb  1.1000  1.7500  0.9815
  Sn  1.9600  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.0149]
_cell_length_b [7.3260]
_cell_length_c [9.9959]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.5444]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CsTbSnSe4]
_chemical_formula_sum '[Cs2 Tb2 Sn2 Se8]'
_cell_volume [487.0255]
_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  0.2482  0.2500  0.0547  1.0
  Tb  Tb1  2  0.2155  0.2500  0.5481  1.0
  Sn  Sn2  2  0.2341  0.7500  0.3423  1.0
  Se  Se3  4  0.0215  0.5125  0.6924  1.0
  Se  Se4  2  0.4460  0.7500  0.1808  1.0
  Se  Se5  2  0.4784  0.7500  0.5890  1.0
]