data_[Tb4Er16Mg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Er  1.2400  1.7500  1.0300
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [19.1712]
_cell_length_b [5.4739]
_cell_length_c [6.3894]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.5725]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb2Er8Mg]
_chemical_formula_sum '[Tb4 Er16 Mg2]'
_cell_volume [668.3684]
_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
[
  Tb  Tb0  4  0.2429  0.0000  0.3340  1.0
  Er  Er1  4  0.0458  0.0000  0.2630  1.0
  Er  Er2  4  0.0790  0.5000  0.5966  1.0
  Er  Er3  4  0.1522  0.0000  0.8095  1.0
  Er  Er4  4  0.1611  0.5000  0.1264  1.0
  Mg  Mg5  2  0.0000  0.5000  0.0000  1.0
]