data_[Sr6Ga3Si3Pt18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ga  1.8100  1.3000  0.7600
  Si  1.9000  1.1000  0.5400
  Pt  2.2800  1.3500  0.8050
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [6.6628]
_cell_length_b [6.6628]
_cell_length_c [16.5716]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Sr2GaSiPt6]
_chemical_formula_sum '[Sr6 Ga3 Si3 Pt18]'
_cell_volume [637.0996]
_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
[
  Sr  Sr0  6  0.0000  0.0000  0.2894  1.0
  Ga  Ga1  3  0.0000  0.0000  0.0000  1.0
  Si  Si2  3  -0.0000  -0.0000  0.5000  1.0
  Pt  Pt3  18  0.0599  0.5300  0.7862  1.0
]