data_[Mg2Cr2Cu2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Cr  1.6600  1.4000  0.9400
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [I4mm]
_cell_length_a [3.1913]
_cell_length_b [3.1913]
_cell_length_c [9.3306]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [107]
_chemical_formula_structural [MgCrCu]
_chemical_formula_sum '[Mg2 Cr2 Cu2]'
_cell_volume [95.0268]
_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
[
  Mg  Mg0  2  0.0000  0.0000  0.3255  1
  Cr  Cr1  2  0.0000  0.0000  0.0179  1
  Cu  Cu2  2  0.0000  0.0000  0.6566  1
]