data_[Rb6Y4Cr2Se12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Y  1.2200  1.8000  1.0400
  Cr  1.6600  1.4000  0.9400
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.1444]
_cell_length_b [12.3833]
_cell_length_c [8.3129]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.7591]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb3Y2CrSe6]
_chemical_formula_sum '[Rb6 Y4 Cr2 Se12]'
_cell_volume [704.2171]
_cell_formula_units_Z [2]
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  4  0.0000  0.1718  0.5000  1
  Rb  Rb1  2  0.0000  0.5000  0.5000  1
  Y  Y2  4  0.0000  0.3339  0.0000  1
  Cr  Cr3  2  0.0000  0.0000  0.0000  1
  Se  Se4  8  0.2167  0.1544  0.1871  1
  Se  Se5  4  0.2452  0.0000  0.8110  1
]