data_[Sr3Ca6Cd3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ca  1.0000  1.8000  1.1400
  Cd  1.6900  1.5500  1.0900
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [4.0131]
_cell_length_b [4.0131]
_cell_length_c [34.2818]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [SrCa2Cd]
_chemical_formula_sum '[Sr3 Ca6 Cd3]'
_cell_volume [478.1471]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.4998  1
  Ca  Ca1  3  0.0000  0.0000  0.7347  1
  Ca  Ca2  3  0.0000  0.0000  0.9320  1
  Cd  Cd3  3  0.0000  0.0000  0.3335  1
]