data_[Na2Tm2Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tm  1.2500  1.7500  1.0950
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [12.1451]
_cell_length_b [4.0977]
_cell_length_c [19.2135]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaTmCl4]
_chemical_formula_sum '[Na2 Tm2 Cl8]'
_cell_volume [956.2079]
_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  0.4033  0.2500  0.0651  1
  Tm  Tm1  2  0.1615  0.7500  0.9905  1
  Cl  Cl2  2  0.0544  0.2500  0.0612  1
  Cl  Cl3  2  0.1705  0.2500  0.9046  1
  Cl  Cl4  2  0.2637  0.7500  0.1096  1
  Cl  Cl5  2  0.3767  0.7500  0.9568  1
]