data_[Na8Ge4Sb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ge  2.0100  1.2500  0.7700
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.5608]
_cell_length_b [5.5365]
_cell_length_c [9.6652]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.4433]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Na2GeSb]
_chemical_formula_sum '[Na8 Ge4 Sb4]'
_cell_volume [501.5271]
_cell_formula_units_Z [4]
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  8  0.1876  0.0057  0.0939  1
  Ge  Ge1  4  0.0000  0.2489  0.7500  1
  Sb  Sb2  4  0.0000  0.2492  0.2500  1
]