data_[Mg4Cu4N4O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Cu  1.9000  1.3500  0.8200
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pbcm]
_cell_length_a [6.8977]
_cell_length_b [5.9916]
_cell_length_c [4.0756]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [57]
_chemical_formula_structural [MgCuNO]
_chemical_formula_sum '[Mg4 Cu4 N4 O4]'
_cell_volume [168.4372]
_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
[
  Mg  Mg0  4  0.1254  0.5827  0.7500  1
  Cu  Cu1  4  0.3874  0.0815  0.7500  1
  N  N2  4  0.3827  0.1007  0.2500  1
  O  O3  4  0.1243  0.5852  0.2500  1
]