data_[Sr2Mg4Cr2N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Mg  1.3100  1.5000  0.8600
  Cr  1.6600  1.4000  0.9400
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [7.2426]
_cell_length_b [5.6895]
_cell_length_c [5.4430]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [SrMg2CrN4]
_chemical_formula_sum '[Sr2 Mg4 Cr2 N8]'
_cell_volume [224.2899]
_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  2  0.0000  0.8473  0.4805  1.0
  Mg  Mg1  4  0.2427  0.6648  0.9949  1.0
  Cr  Cr2  2  0.0000  0.1982  0.0033  1.0
  N  N3  4  0.1942  0.3242  0.8694  1.0
  N  N4  2  0.0000  0.2598  0.3202  1.0
  N  N5  2  0.0000  0.8833  0.9673  1.0
]