data_[Ge18P12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ge  2.0100  1.2500  0.7700
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [R-3c]
_cell_length_a [6.6434]
_cell_length_b [6.6434]
_cell_length_c [16.2787]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [167]
_chemical_formula_structural [Ge3P2]
_chemical_formula_sum '[Ge18 P12]'
_cell_volume [622.2124]
_cell_formula_units_Z [6]
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
[
  Ge  Ge0  18  0.0000  0.2786  0.2500  1
  P  P1  12  0.0000  0.0000  0.1375  1
]