data_[Sr8Tb4Ga4Se20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Tb  1.1000  1.7500  0.9815
  Ga  1.8100  1.3000  0.7600
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.1241]
_cell_length_b [18.8093]
_cell_length_c [12.8793]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Sr2TbGaSe5]
_chemical_formula_sum '[Sr8 Tb4 Ga4 Se20]'
_cell_volume [999.0693]
_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
[
  Sr  Sr0  4  0.0000  0.1185  0.6826  1.0
  Sr  Sr1  4  0.0000  0.1235  0.3242  1.0
  Tb  Tb2  4  0.0000  0.2073  0.0258  1.0
  Ga  Ga3  4  0.0000  0.4414  0.4317  1.0
  Se  Se4  4  0.0000  0.0454  0.0413  1.0
  Se  Se5  4  0.0000  0.2940  0.6765  1.0
  Se  Se6  4  0.0000  0.3161  0.3671  1.0
  Se  Se7  4  0.0000  0.3550  0.0058  1.0
  Se  Se8  4  0.0000  0.4988  0.7690  1.0
]