data_[Na1Tb1Mg2Cl8]
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
  Mg  1.3100  1.5000  0.8600
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [6.1891]
_cell_length_b [7.8280]
_cell_length_c [6.2761]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.3394]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [NaTbMg2Cl8]
_chemical_formula_sum '[Na1 Tb1 Mg2 Cl8]'
_cell_volume [304.0597]
_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
[
  Na  Na0  1  0.0000  0.5000  0.0000  1.0
  Tb  Tb1  1  0.0000  0.0000  0.0000  1.0
  Mg  Mg2  2  0.5000  0.2647  0.5000  1.0
  Cl  Cl3  4  0.2236  0.2400  0.1992  1.0
  Cl  Cl4  2  0.2980  0.0000  0.6801  1.0
  Cl  Cl5  2  0.3025  0.5000  0.6750  1.0
]