data_[Ca8Cd4N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Cd  1.6900  1.5500  1.0900
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [7.0620]
_cell_length_b [7.5249]
_cell_length_c [6.3814]
_cell_angle_alpha [90.0000]
_cell_angle_beta [91.9842]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Ca2CdN2]
_chemical_formula_sum '[Ca8 Cd4 N8]'
_cell_volume [338.9091]
_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
[
  Ca  Ca0  4  0.0267  0.1409  0.2487  1
  Ca  Ca1  4  0.3571  0.6403  0.9169  1
  Cd  Cd2  4  0.3184  0.0892  0.9189  1
  N  N3  4  0.1873  0.6369  0.5917  1
  N  N4  4  0.2669  0.1347  0.5716  1
]