data_[Er2Ga8Ni2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Ga  1.8100  1.3000  0.7600
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [P4_2/nmc]
_cell_length_a [6.9555]
_cell_length_b [6.9555]
_cell_length_c [5.1669]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [137]
_chemical_formula_structural [ErGa4Ni]
_chemical_formula_sum '[Er2 Ga8 Ni2]'
_cell_volume [249.9706]
_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
[
  Er  Er0  2  0.0000  0.0000  0.5000  1
  Ga  Ga1  8  0.0000  0.3272  0.9496  1
  Ni  Ni2  2  0.0000  0.0000  0.0000  1
]