data_[Pm7Nd2Er3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Nd  1.1400  1.8500  1.2765
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [5.8829]
_cell_length_b [3.6363]
_cell_length_c [19.0558]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.8307]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Pm7Nd2Er3]
_chemical_formula_sum '[Pm7 Nd2 Er3]'
_cell_volume [406.7350]
_cell_formula_units_Z [1]
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  2  0.1760  0.5000  0.1791  1
  Pm  Pm1  2  0.2584  0.5000  0.5359  1
  Pm  Pm2  2  0.3268  0.0000  0.8569  1
  Pm  Pm3  1  0.0000  0.0000  0.0000  1
  Nd  Nd4  2  0.2958  0.5000  0.7029  1
  Er  Er5  2  0.2178  0.0000  0.3693  1
  Er  Er6  1  0.5000  0.5000  0.0000  1
]