data_[Sr8Cu4N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Cu  1.9000  1.3500  0.8200
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.4854]
_cell_length_b [5.3334]
_cell_length_c [7.3616]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.0476]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2CuN2]
_chemical_formula_sum '[Sr8 Cu4 N8]'
_cell_volume [373.6434]
_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
[
  Sr  Sr0  4  0.0527  0.0000  0.2783  1
  Sr  Sr1  4  0.1798  0.5000  0.0762  1
  Cu  Cu2  4  0.1350  0.5000  0.6201  1
  N  N3  4  0.0228  0.5000  0.3151  1
  N  N4  4  0.1842  0.0000  0.1001  1
]