data_[Pm4Mg4Co8]
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
  Co  1.8800  1.3500  0.7683
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [7.7929]
_cell_length_b [3.9402]
_cell_length_c [9.9612]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [PmMgCo2]
_chemical_formula_sum '[Pm4 Mg4 Co8]'
_cell_volume [305.8648]
_cell_formula_units_Z [4]
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  0.1317  0.2500  0.1318  1
  Mg  Mg1  4  0.0047  0.2500  0.6107  1
  Co  Co2  4  0.1763  0.2500  0.8387  1
  Co  Co3  4  0.2471  0.2500  0.4119  1
]