data_[Er4Cu3Ni1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Cu  1.9000  1.3500  0.8200
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [Pmm2]
_cell_length_a [3.6638]
_cell_length_b [4.3804]
_cell_length_c [10.1513]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [Er4Cu3Ni]
_chemical_formula_sum '[Er4 Cu3 Ni1]'
_cell_volume [162.9181]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.1383  1.0
  Er  Er1  1  0.0000  0.5000  0.8663  1.0
  Er  Er2  1  0.5000  0.0000  0.6420  1.0
  Er  Er3  1  0.5000  0.5000  0.3526  1.0
  Cu  Cu4  1  0.0000  0.0000  0.4270  1.0
  Cu  Cu5  1  0.0000  0.5000  0.5718  1.0
  Cu  Cu6  1  0.5000  0.0000  0.9278  1.0
  Ni  Ni7  1  0.5000  0.5000  0.0741  1.0
]