data_[Na4Tl4Ge4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tl  1.6200  1.9000  1.3325
  Ge  2.0100  1.2500  0.7700
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [5.8995]
_cell_length_b [11.2934]
_cell_length_c [5.4128]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [NaTlGeO3]
_chemical_formula_sum '[Na4 Tl4 Ge4 O12]'
_cell_volume [360.6325]
_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  4  0.0000  0.4169  0.2500  1.0
  Tl  Tl1  4  0.0000  0.2602  0.7500  1.0
  Ge  Ge2  4  0.0000  0.0499  0.2500  1.0
  O  O3  8  0.2094  0.0000  0.0000  1.0
  O  O4  4  0.0000  0.2072  0.2500  1.0
]