data_[Cu4Sn4Hg4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cu  1.9000  1.3500  0.8200
  Sn  1.9600  1.4500  0.8300
  Hg  2.0000  1.5000  1.2450
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [5.9664]
_cell_length_b [6.3961]
_cell_length_c [10.0683]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [CuSnHgO4]
_chemical_formula_sum '[Cu4 Sn4 Hg4 O16]'
_cell_volume [384.2301]
_cell_formula_units_Z [4]
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
[
  Cu  Cu0  4  0.2500  0.2500  0.2500  1.0
  Sn  Sn1  4  0.0000  0.0000  0.5000  1.0
  Hg  Hg2  4  0.0000  0.2500  0.8354  1.0
  O  O3  8  0.0000  0.0472  0.2888  1.0
  O  O4  8  0.2284  0.2500  0.5065  1.0
]