data_[Pr2Nd6Mg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Nd  1.1400  1.8500  1.2765
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [3.9119]
_cell_length_b [10.7898]
_cell_length_c [8.2419]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [PrNd3Mg]
_chemical_formula_sum '[Pr2 Nd6 Mg2]'
_cell_volume [347.8786]
_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
[
  Pr  Pr0  2  0.0000  0.5000  0.0562  1
  Nd  Nd1  4  0.0000  0.2509  0.7424  1
  Nd  Nd2  2  0.0000  0.5000  0.4421  1
  Mg  Mg3  2  0.0000  0.0000  0.2526  1
]