data_[Rb4Mn2Ge2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Mn  1.5500  1.4000  0.6483
  Ge  2.0100  1.2500  0.7700
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [I-42m]
_cell_length_a [8.4248]
_cell_length_b [8.4248]
_cell_length_c [6.7975]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [121]
_chemical_formula_structural [Rb2MnGeSe4]
_chemical_formula_sum '[Rb4 Mn2 Ge2 Se8]'
_cell_volume [482.4628]
_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  0.5000  0.0000  1.0
  Mn  Mn1  2  0.0000  0.0000  0.0000  1.0
  Ge  Ge2  2  0.0000  0.0000  0.5000  1.0
  Se  Se3  8  0.1545  0.1545  0.2697  1.0
]