data_[Rb2Cr2Sn2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Cr  1.6600  1.4000  0.9400
  Sn  1.9600  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.1112]
_cell_length_b [7.0031]
_cell_length_c [8.6760]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.0053]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbCrSnSe4]
_chemical_formula_sum '[Rb2 Cr2 Sn2 Se8]'
_cell_volume [426.7437]
_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  2  0.3184  0.7500  0.9231  1
  Cr  Cr1  2  0.3614  0.2500  0.5389  1
  Sn  Sn2  2  0.1113  0.7500  0.3517  1
  Se  Se3  4  0.3936  0.5051  0.3253  1
  Se  Se4  2  0.0216  0.2500  0.3938  1
  Se  Se5  2  0.2287  0.2500  0.8036  1
]