data_[Pm6Zn2Cu8]
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
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.0432]
_cell_length_b [6.4517]
_cell_length_c [13.8445]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Pm3ZnCu4]
_chemical_formula_sum '[Pm6 Zn2 Cu8]'
_cell_volume [361.1407]
_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
[
  Pm  Pm0  4  0.0000  0.0000  0.1893  1
  Pm  Pm1  2  0.0000  0.5000  0.0000  1
  Zn  Zn2  2  0.0000  0.5000  0.5000  1
  Cu  Cu3  8  0.0000  0.1964  0.3803  1
]