data_[Ge3P6O18]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [4.9524]
_cell_length_b [4.9524]
_cell_length_c [17.2324]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Ge(PO3)2]
_chemical_formula_sum '[Ge3 P6 O18]'
_cell_volume [366.0184]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.3330  1
  P  P1  3  0.0000  0.0000  0.6071  1
  P  P2  3  0.0000  0.0000  0.7258  1
  O  O3  9  0.0051  0.5970  0.9224  1
  O  O4  9  0.0055  0.4109  0.0775  1
]