data_[Pm2Ho2C8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ho  1.2300  1.7500  1.0410
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.4565]
_cell_length_b [3.7167]
_cell_length_c [7.1823]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.5185]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [PmHoC4]
_chemical_formula_sum '[Pm2 Ho2 C8]'
_cell_volume [174.8981]
_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
  Ho  Ho1  2  0.0000  0.5000  0.5000  1
  C  C2  4  0.1932  0.0000  0.7877  1
  C  C3  4  0.1992  0.5000  0.3112  1
]