data_[Cr2Fe2Ni4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cr  1.6600  1.4000  0.9400
  Fe  1.8300  1.4000  0.8525
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.3907]
_cell_length_b [2.4977]
_cell_length_c [4.3170]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.7545]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [CrFeNi2]
_chemical_formula_sum '[Cr2 Fe2 Ni4]'
_cell_volume [89.1647]
_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
[
  Cr  Cr0  2  0.0000  0.5000  0.0000  1
  Fe  Fe1  2  0.0000  0.0000  0.5000  1
  Ni  Ni2  4  0.2498  0.5000  0.7512  1
]