data_[Er8Tm4Ni8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.6790]
_cell_length_b [12.9802]
_cell_length_c [9.3432]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Er2TmNi2]
_chemical_formula_sum '[Er8 Tm4 Ni8]'
_cell_volume [446.1788]
_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
[
  Er  Er0  4  0.0000  0.1031  0.6458  1.0
  Er  Er1  4  0.0000  0.3240  0.8476  1.0
  Tm  Tm2  4  0.0000  0.3932  0.4844  1.0
  Ni  Ni3  4  0.0000  0.0254  0.3715  1.0
  Ni  Ni4  4  0.0000  0.2383  0.1360  1.0
]