data_[Na4Sr2Tl2Sb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Tl  1.6200  1.9000  1.3325
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.8089]
_cell_length_b [9.5618]
_cell_length_c [8.4523]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [Na2SrTlSb2]
_chemical_formula_sum '[Na4 Sr2 Tl2 Sb4]'
_cell_volume [388.6554]
_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  0.1792  0.3686  1.0
  Na  Na1  2  0.5000  0.0795  0.0503  1.0
  Sr  Sr2  2  0.0000  0.4326  0.9726  1.0
  Tl  Tl3  2  0.5000  0.3014  0.6366  1.0
  Sb  Sb4  2  0.0000  0.1330  0.7591  1.0
  Sb  Sb5  2  0.5000  0.3839  0.2584  1.0
]