data_[Rb12Si8As16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Si  1.9000  1.1000  0.5400
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [15.7095]
_cell_length_b [10.9270]
_cell_length_c [6.8644]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.0360]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Rb3(SiAs2)2]
_chemical_formula_sum '[Rb12 Si8 As16]'
_cell_volume [1177.5868]
_cell_formula_units_Z [4]
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
[
  Rb  Rb0  8  0.1252  0.1300  0.5283  1.0
  Rb  Rb1  4  0.0000  0.3948  0.2500  1.0
  Si  Si2  8  0.2152  0.3837  0.9595  1.0
  As  As3  8  0.1418  0.1958  0.0196  1.0
  As  As4  8  0.1724  0.4330  0.6222  1.0
]