data_[Cs1Ca2Tb1I8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Ca  1.0000  1.8000  1.1400
  Tb  1.1000  1.7500  0.9815
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [7.3458]
_cell_length_b [9.9671]
_cell_length_c [7.7255]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.9563]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [CsCa2TbI8]
_chemical_formula_sum '[Cs1 Ca2 Tb1 I8]'
_cell_volume [565.5539]
_cell_formula_units_Z [1]
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  1  0.0000  0.5000  0.0000  1
  Ca  Ca1  2  0.5000  0.2506  0.5000  1
  Tb  Tb2  1  0.0000  0.0000  0.0000  1
  I  I3  4  0.2515  0.2068  0.1648  1
  I  I4  2  0.2535  0.0000  0.6716  1
  I  I5  2  0.2671  0.5000  0.6072  1
]