data_[Sr3Ce6Al21Ag6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ce  1.1200  1.8500  1.0800
  Al  1.6100  1.2500  0.6750
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [5.7406]
_cell_length_b [5.7406]
_cell_length_c [26.9824]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [SrCe2Al7Ag2]
_chemical_formula_sum '[Sr3 Ce6 Al21 Ag6]'
_cell_volume [770.0743]
_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  0.0000  1
  Ce  Ce1  6  0.0000  0.0000  0.1420  1
  Al  Al2  18  0.0086  0.5043  0.9176  1
  Al  Al3  3  -0.0000  -0.0000  0.5000  1
  Ag  Ag4  6  0.0000  0.0000  0.3360  1
]