data_[Sr2Cd6Hg3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Cd  1.6900  1.5500  1.0900
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P-62m]
_cell_length_a [8.6909]
_cell_length_b [8.6909]
_cell_length_c [4.6457]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [189]
_chemical_formula_structural [Sr2(Cd2Hg)3]
_chemical_formula_sum '[Sr2 Cd6 Hg3]'
_cell_volume [303.8888]
_cell_formula_units_Z [1]
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  2  0.3333  0.6667  0.0000  1.0
  Cd  Cd1  3  0.0000  0.2011  0.0000  1.0
  Cd  Cd2  3  0.0000  0.7359  0.5000  1.0
  Hg  Hg3  3  0.0000  0.4085  0.5000  1.0
]