data_[Pm9Zn6Pt21]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Zn  1.6500  1.3500  0.8800
  Pt  2.2800  1.3500  0.8050
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [5.5300]
_cell_length_b [5.5300]
_cell_length_c [25.6254]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Pm3Zn2Pt7]
_chemical_formula_sum '[Pm9 Zn6 Pt21]'
_cell_volume [678.6583]
_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
[
  Pm  Pm0  6  0.0000  0.0000  0.1392  1
  Pm  Pm1  3  0.0000  0.0000  0.0000  1
  Zn  Zn2  6  0.0000  0.0000  0.3336  1
  Pt  Pt3  18  0.0026  0.5013  0.9195  1
  Pt  Pt4  3  -0.0000  -0.0000  0.5000  1
]