data_[Rb4Tb2Mg4Te8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tb  1.1000  1.7500  0.9815
  Mg  1.3100  1.5000  0.8600
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [16.8298]
_cell_length_b [4.5502]
_cell_length_c [8.8483]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.4705]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Tb(MgTe2)2]
_chemical_formula_sum '[Rb4 Tb2 Mg4 Te8]'
_cell_volume [646.3419]
_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
[
  Rb  Rb0  4  0.1266  0.0000  0.5502  1.0
  Tb  Tb1  2  0.0000  0.0000  0.0000  1.0
  Mg  Mg2  4  0.1690  0.5000  0.9777  1.0
  Te  Te3  4  0.0122  0.5000  0.7604  1.0
  Te  Te4  4  0.2020  0.0000  0.1800  1.0
]