data_[Ba4Mg4Cu4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Mg  1.3100  1.5000  0.8600
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [7.9498]
_cell_length_b [4.5996]
_cell_length_c [9.4839]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [BaMgCu]
_chemical_formula_sum '[Ba4 Mg4 Cu4]'
_cell_volume [346.7853]
_cell_formula_units_Z [4]
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
[
  Ba  Ba0  4  0.0371  0.2500  0.6803  1.0
  Mg  Mg1  4  0.1298  0.2500  0.0498  1.0
  Cu  Cu2  4  0.2140  0.7500  0.8921  1.0
]