data_[Pm2Nd3Er4]
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 [P-1]
_cell_length_a [6.2220]
_cell_length_b [6.2333]
_cell_length_c [8.0307]
_cell_angle_alpha [82.6592]
_cell_angle_beta [75.1207]
_cell_angle_gamma [80.4017]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Pm2Nd3Er4]
_chemical_formula_sum '[Pm2 Nd3 Er4]'
_cell_volume [295.6180]
_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  0.3323  0.6671  0.6668  1
  Nd  Nd1  2  0.4424  0.8893  0.2230  1
  Nd  Nd2  1  0.0000  0.0000  0.0000  1
  Er  Er3  2  0.1099  0.2255  0.5538  1
  Er  Er4  2  0.2221  0.4469  0.1119  1
]