data_[K6Mg3Os9O36]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Mg  1.3100  1.5000  0.8600
  Os  2.2000  1.3000  0.6730
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [7.2884]
_cell_length_b [7.2884]
_cell_length_c [18.0258]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [K2Mg(OsO4)3]
_chemical_formula_sum '[K6 Mg3 Os9 O36]'
_cell_volume [829.2605]
_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
[
  K  K0  6  0.0000  0.0000  0.3961  1
  Mg  Mg1  3  0.0000  0.0000  0.0000  1
  Os  Os2  9  0.0000  0.5000  0.5000  1
  O  O3  18  0.0712  0.5356  0.8548  1
  O  O4  18  0.0805  0.5403  0.5960  1
]