data_[Rb4Li4Mg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Li  0.9800  1.4500  0.9000
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [11.1890]
_cell_length_b [11.1890]
_cell_length_c [3.6939]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Rb2Li2Mg]
_chemical_formula_sum '[Rb4 Li4 Mg2]'
_cell_volume [462.4479]
_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  0.1968  0.3032  0.0000  1
  Li  Li1  4  0.0927  0.5927  0.5000  1
  Mg  Mg2  2  0.0000  0.0000  0.0000  1
]