data_[Rb4Mg4Sn4]
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
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.7185]
_cell_length_b [7.9541]
_cell_length_c [8.3056]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.0852]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [RbMgSn]
_chemical_formula_sum '[Rb4 Mg4 Sn4]'
_cell_volume [441.3465]
_cell_formula_units_Z [4]
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  0.2394  0.5000  0.3611  1.0
  Mg  Mg1  4  0.0000  0.2991  0.0000  1.0
  Sn  Sn2  4  0.1845  0.0000  0.1536  1.0
]