data_[Rb2Na2Mo2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Mo  2.1600  1.4500  0.7750
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.8648]
_cell_length_b [7.3198]
_cell_length_c [9.5901]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.3717]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbNaMoSe4]
_chemical_formula_sum '[Rb2 Na2 Mo2 Se8]'
_cell_volume [457.3350]
_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  0.2706  0.2500  0.0736  1
  Na  Na1  2  0.2288  0.2500  0.5471  1
  Mo  Mo2  2  0.2007  0.7500  0.3150  1
  Se  Se3  4  0.0164  0.5054  0.7299  1
  Se  Se4  2  0.3975  0.7500  0.5603  1
  Se  Se5  2  0.4017  0.7500  0.1575  1
]