data_[Sn6P18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sn  1.9600  1.4500  0.8300
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [7.4928]
_cell_length_b [7.4928]
_cell_length_c [10.7013]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [SnP3]
_chemical_formula_sum '[Sn6 P18]'
_cell_volume [520.2952]
_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
[
  Sn  Sn0  6  0.0000  0.0000  0.2573  1.0
  P  P1  18  0.0306  0.5153  0.7161  1.0
]