data_[Rb4Ta2Cr4Se12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ta  1.5000  1.4500  0.8200
  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 [6.4209]
_cell_length_b [11.1389]
_cell_length_c [8.4548]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.2627]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Ta(CrSe3)2]
_chemical_formula_sum '[Rb4 Ta2 Cr4 Se12]'
_cell_volume [586.0569]
_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  0.1643  0.0000  1.0
  Ta  Ta1  2  0.0000  0.0000  0.5000  1.0
  Cr  Cr2  4  0.0000  0.3327  0.5000  1.0
  Se  Se3  8  0.2294  0.1694  0.6770  1.0
  Se  Se4  4  0.2135  0.5000  0.6774  1.0
]