data_[Na2Ga2Ge2]
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 [Pmm2]
_cell_length_a [4.2085]
_cell_length_b [4.3218]
_cell_length_c [7.5529]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [NaGaGe]
_chemical_formula_sum '[Na2 Ga2 Ge2]'
_cell_volume [137.3754]
_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  1  0.0000  0.0000  0.7425  1.0
  Na  Na1  1  0.5000  0.5000  0.0342  1.0
  Ga  Ga2  1  0.0000  0.5000  0.3830  1.0
  Ga  Ga3  1  0.5000  0.5000  0.6154  1.0
  Ge  Ge4  1  0.0000  0.0000  0.1650  1.0
  Ge  Ge5  1  0.5000  0.0000  0.3854  1.0
]