data_[Sr3Cr6Bi3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Cr  1.6600  1.4000  0.9400
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.5647]
_cell_length_b [5.5647]
_cell_length_c [13.8098]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [SrCr2BiO6]
_chemical_formula_sum '[Sr3 Cr6 Bi3 O18]'
_cell_volume [370.3395]
_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  0.7610  1.0
  Cr  Cr1  3  0.0000  0.0000  0.0045  1.0
  Cr  Cr2  3  0.0000  0.0000  0.5073  1.0
  Bi  Bi3  3  0.0000  0.0000  0.2873  1.0
  O  O4  9  0.0847  0.3339  0.5853  1.0
  O  O5  9  0.1169  0.7656  0.0770  1.0
]