data_[Na6Ga8Ge8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ga  1.8100  1.3000  0.7600
  Ge  2.0100  1.2500  0.7700
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.2030]
_cell_length_b [4.7933]
_cell_length_c [25.4167]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Na3(GaGe)4]
_chemical_formula_sum '[Na6 Ga8 Ge8]'
_cell_volume [512.0562]
_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  4  0.0000  0.0000  0.1401  1.0
  Na  Na1  2  0.0000  0.5000  0.5000  1.0
  Ga  Ga2  4  0.0000  0.0000  0.3056  1.0
  Ga  Ga3  4  0.0000  0.5000  0.0486  1.0
  Ge  Ge4  4  0.0000  0.0000  0.4035  1.0
  Ge  Ge5  4  0.0000  0.5000  0.2544  1.0
]