data_[Li8Cu2Ni8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Cu  1.9000  1.3500  0.8200
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [7.7352]
_cell_length_b [7.7352]
_cell_length_c [3.5348]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Li4CuNi4]
_chemical_formula_sum '[Li8 Cu2 Ni8]'
_cell_volume [211.5021]
_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
[
  Li  Li0  8  0.0000  0.3174  0.0000  1
  Cu  Cu1  2  0.0000  0.0000  0.0000  1
  Ni  Ni2  8  0.1658  0.1658  0.5000  1
]