data_[Tb4Ho8Mg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Ho  1.2300  1.7500  1.0410
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [5.0391]
_cell_length_b [5.0391]
_cell_length_c [18.5402]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [TbHo2Mg]
_chemical_formula_sum '[Tb4 Ho8 Mg4]'
_cell_volume [470.7867]
_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
[
  Tb  Tb0  4  0.0000  0.0000  0.3692  1
  Ho  Ho1  4  0.0000  0.0000  0.1319  1
  Ho  Ho2  4  0.0000  0.5000  0.0000  1
  Mg  Mg3  4  0.0000  0.5000  0.2500  1
]