data_[Na2Er6Tm4Te12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.9518]
_cell_length_b [4.3160]
_cell_length_c [8.7237]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.6610]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaEr3(TmTe3)2]
_chemical_formula_sum '[Na2 Er6 Tm4 Te12]'
_cell_volume [693.3768]
_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
[
  Na  Na0  2  0.0000  0.5000  0.0000  1
  Er  Er1  4  0.1628  0.0000  0.8234  1
  Er  Er2  2  0.0000  0.5000  0.5000  1
  Tm  Tm3  4  0.1692  0.0000  0.3422  1
  Te  Te4  4  0.0032  0.0000  0.2533  1
  Te  Te5  4  0.1658  0.5000  0.5824  1
  Te  Te6  4  0.1698  0.5000  0.0851  1
]