data_[Pm14Er8Mg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Er  1.2400  1.7500  1.0300
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.2139]
_cell_length_b [5.5466]
_cell_length_c [13.1319]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.5965]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm7Er4Mg]
_chemical_formula_sum '[Pm14 Er8 Mg2]'
_cell_volume [786.7108]
_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  0.1388  0.5000  0.4684  1
  Pm  Pm1  4  0.1595  0.0000  0.2562  1
  Pm  Pm2  4  0.2264  0.0000  0.8967  1
  Pm  Pm3  2  0.0000  0.5000  0.0000  1
  Er  Er4  4  0.0465  0.5000  0.7782  1
  Er  Er5  4  0.0915  0.0000  0.6276  1
  Mg  Mg6  2  0.0000  0.0000  0.0000  1
]