data_[Sr3Ag6Cl18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ag  1.9300  1.6000  1.0867
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [6.8433]
_cell_length_b [6.8433]
_cell_length_c [19.2692]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Sr(AgCl3)2]
_chemical_formula_sum '[Sr3 Ag6 Cl18]'
_cell_volume [781.4882]
_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  0.3151  1.0
  Ag  Ag1  3  0.0000  0.0000  0.5068  1.0
  Ag  Ag2  3  0.0000  0.0000  0.8252  1.0
  Cl  Cl3  9  0.0129  0.3092  0.4259  1.0
  Cl  Cl4  9  0.0489  0.7129  0.5803  1.0
]