data_[Rb4Mg6Cl16]
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
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [15.7774]
_cell_length_b [7.6697]
_cell_length_c [6.5856]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.6010]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Mg3Cl8]
_chemical_formula_sum '[Rb4 Mg6 Cl16]'
_cell_volume [759.6064]
_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  0.2340  0.5000  0.6715  1.0
  Mg  Mg1  4  0.0000  0.2604  0.0000  1.0
  Mg  Mg2  2  0.0000  0.0000  0.5000  1.0
  Cl  Cl3  8  0.0906  0.2267  0.3842  1.0
  Cl  Cl4  4  0.0918  0.0000  0.8961  1.0
  Cl  Cl5  4  0.1004  0.5000  0.9564  1.0
]