data_[Gd6Sn8Ge8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Gd  1.2000  1.8000  1.0750
  Sn  1.9600  1.4500  0.8300
  Ge  2.0100  1.2500  0.7700
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.1101]
_cell_length_b [7.6508]
_cell_length_c [17.6288]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Gd3(SnGe)4]
_chemical_formula_sum '[Gd6 Sn8 Ge8]'
_cell_volume [554.3454]
_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
[
  Gd  Gd0  4  0.0000  0.5000  0.1239  1
  Gd  Gd1  2  0.0000  0.0000  0.0000  1
  Sn  Sn2  4  0.0000  0.0000  0.2265  1
  Sn  Sn3  4  0.0000  0.1858  0.5000  1
  Ge  Ge4  8  0.0000  0.3117  0.3548  1
]