data_[Tb16Nd4Mg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Nd  1.1400  1.8500  1.2765
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [16.3035]
_cell_length_b [6.6634]
_cell_length_c [6.7256]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.8706]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb8Nd2Mg]
_chemical_formula_sum '[Tb16 Nd4 Mg2]'
_cell_volume [715.0237]
_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  8  0.0808  0.2611  0.3864  1
  Tb  Tb1  4  0.0944  0.5000  0.9177  1
  Tb  Tb2  4  0.2451  0.0000  0.3116  1
  Nd  Nd3  4  0.1855  0.0000  0.7921  1
  Mg  Mg4  2  0.0000  0.0000  0.0000  1
]