data_[Sr8Ni4N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ni  1.9100  1.3500  0.7400
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.3798]
_cell_length_b [5.3034]
_cell_length_c [7.3610]
_cell_angle_alpha [90.0000]
_cell_angle_beta [125.6633]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2NiN2]
_chemical_formula_sum '[Sr8 Ni4 N8]'
_cell_volume [360.9326]
_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  0.0571  0.5000  0.7842  1.0
  Sr  Sr1  4  0.1849  0.0000  0.5887  1.0
  Ni  Ni2  4  0.1230  0.0000  0.1293  1.0
  N  N3  4  0.0256  0.0000  0.8227  1.0
  N  N4  4  0.1877  0.5000  0.6077  1.0
]