data_[Ba6Sr6Mg9]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Sr  0.9500  2.0000  1.3200
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [6.1110]
_cell_length_b [6.1110]
_cell_length_c [28.8363]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Ba2Sr2Mg3]
_chemical_formula_sum '[Ba6 Sr6 Mg9]'
_cell_volume [932.6037]
_cell_formula_units_Z [3]
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
[
  Ba  Ba0  6  0.0000  0.0000  0.3801  1
  Sr  Sr1  6  0.0000  0.0000  0.1270  1
  Mg  Mg2  6  0.0000  0.0000  0.2528  1
  Mg  Mg3  3  0.0000  0.0000  0.0000  1
]