data_[Pm2Sm14Mg8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [15.3309]
_cell_length_b [5.8314]
_cell_length_c [9.8102]
_cell_angle_alpha [90.0000]
_cell_angle_beta [121.4789]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [PmSm7Mg4]
_chemical_formula_sum '[Pm2 Sm14 Mg8]'
_cell_volume [747.9671]
_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  0.0000  1
  Sm  Sm1  4  0.0808  0.0000  0.4259  1
  Sm  Sm2  4  0.1995  0.0000  0.8769  1
  Sm  Sm3  4  0.2473  0.5000  0.7104  1
  Sm  Sm4  2  0.0000  0.5000  0.0000  1
  Mg  Mg5  4  0.0396  0.5000  0.6954  1
  Mg  Mg6  4  0.1750  0.5000  0.3454  1
]