data_[Na3Tb3Er12Se24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tb  1.1000  1.7500  0.9815
  Er  1.2400  1.7500  1.0300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [8.3967]
_cell_length_b [8.3967]
_cell_length_c [20.6922]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [NaTb(ErSe2)4]
_chemical_formula_sum '[Na3 Tb3 Er12 Se24]'
_cell_volume [1263.4399]
_cell_formula_units_Z [3]
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
[
  Na  Na0  3  0.0000  0.0000  0.6260  1.0
  Tb  Tb1  3  0.0000  0.0000  0.9950  1.0
  Er  Er2  9  0.0133  0.5067  0.5016  1.0
  Er  Er3  3  0.0000  0.0000  0.3746  1.0
  Se  Se4  9  0.0196  0.5098  0.7536  1.0
  Se  Se5  9  0.1792  0.3583  0.5789  1.0
  Se  Se6  3  0.0000  0.0000  0.2418  1.0
  Se  Se7  3  0.0000  0.0000  0.7604  1.0
]