data_[Sr4Cr4N6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Cr  1.6600  1.4000  0.9400
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.3153]
_cell_length_b [3.4067]
_cell_length_c [5.9238]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.9574]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2Cr2N3]
_chemical_formula_sum '[Sr4 Cr4 N6]'
_cell_volume [202.0220]
_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
[
  Sr  Sr0  4  0.1023  0.5000  0.8268  1
  Cr  Cr1  4  0.1594  0.0000  0.4109  1
  N  N2  4  0.2034  0.5000  0.2896  1
  N  N3  2  0.0000  0.0000  0.5000  1
]