data_[Pm2Mg8Rh4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Mg  1.3100  1.5000  0.8600
  Rh  2.2800  1.3500  0.7450
]
_symmetry_space_group_name_H-M [P4_2/mnm]
_cell_length_a [8.2840]
_cell_length_b [8.2840]
_cell_length_c [4.1347]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [136]
_chemical_formula_structural [Pm(Mg2Rh)2]
_chemical_formula_sum '[Pm2 Mg8 Rh4]'
_cell_volume [283.7409]
_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  2  0.0000  0.0000  0.5000  1
  Mg  Mg1  8  0.0976  0.3376  0.0000  1
  Rh  Rh2  4  0.1964  0.8036  0.0000  1
]