data_[Tb4Ce2Nd2Er2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Ce  1.1200  1.8500  1.0800
  Nd  1.1400  1.8500  1.2765
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Pmma]
_cell_length_a [5.8921]
_cell_length_b [7.7791]
_cell_length_c [7.1874]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [51]
_chemical_formula_structural [Tb2CeNdEr]
_chemical_formula_sum '[Tb4 Ce2 Nd2 Er2]'
_cell_volume [329.4391]
_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  0.2500  0.2903  0.3203  1
  Ce  Ce1  2  0.0000  0.0000  0.0000  1
  Nd  Nd2  2  0.2500  0.5000  0.8371  1
  Er  Er3  2  0.2500  0.0000  0.6113  1
]