data_[Cd2Ni2Se2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cd  1.6900  1.5500  1.0900
  Ni  1.9100  1.3500  0.7400
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [I4mm]
_cell_length_a [3.0631]
_cell_length_b [3.0631]
_cell_length_c [12.0370]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [107]
_chemical_formula_structural [CdNiSe]
_chemical_formula_sum '[Cd2 Ni2 Se2]'
_cell_volume [112.9355]
_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
[
  Cd  Cd0  2  0.0000  0.0000  0.9735  1
  Ni  Ni1  2  0.0000  0.0000  0.3105  1
  Se  Se2  2  0.0000  0.0000  0.7160  1
]