data_[Na4Tb2Ag2Sb4]
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
  Ag  1.9300  1.6000  1.0867
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.5512]
_cell_length_b [9.1426]
_cell_length_c [7.6419]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [Na2TbAgSb2]
_chemical_formula_sum '[Na4 Tb2 Ag2 Sb4]'
_cell_volume [317.9803]
_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  0.1657  0.3623  1.0
  Na  Na1  2  0.5000  0.0698  0.0445  1.0
  Tb  Tb2  2  0.0000  0.4464  0.9736  1.0
  Ag  Ag3  2  0.5000  0.3178  0.6402  1.0
  Sb  Sb4  2  0.0000  0.1640  0.7662  1.0
  Sb  Sb5  2  0.5000  0.3838  0.2587  1.0
]