data_[Pm6Er4Mg14]
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 [Cmmm]
_cell_length_a [5.1436]
_cell_length_b [25.9457]
_cell_length_c [5.1998]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Pm3Er2Mg7]
_chemical_formula_sum '[Pm6 Er4 Mg14]'
_cell_volume [693.9398]
_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  0.3372  0.5000  1
  Pm  Pm1  2  0.0000  0.5000  0.5000  1
  Er  Er2  4  0.0000  0.1441  0.0000  1
  Mg  Mg3  4  0.0000  0.0741  0.5000  1
  Mg  Mg4  4  0.0000  0.2689  0.0000  1
  Mg  Mg5  4  0.0000  0.4263  0.0000  1
  Mg  Mg6  2  0.0000  0.0000  0.0000  1
]