data_[Rb4Mg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [Pnnm]
_cell_length_a [9.5118]
_cell_length_b [9.8550]
_cell_length_c [4.3585]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [58]
_chemical_formula_structural [Rb2Mg]
_chemical_formula_sum '[Rb4 Mg2]'
_cell_volume [408.5580]
_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  0.1981  0.3372  0.0000  1
  Mg  Mg1  2  0.0000  0.0000  0.0000  1
]