data_[V4Hg2Se2O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  V  1.6300  1.3500  0.7775
  Hg  2.0000  1.5000  1.2450
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.8069]
_cell_length_b [5.6910]
_cell_length_c [7.6008]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.7873]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [V2HgSeO8]
_chemical_formula_sum '[V4 Hg2 Se2 O16]'
_cell_volume [378.2794]
_cell_formula_units_Z [2]
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
[
  V  V0  4  0.1626  0.5000  0.2099  1.0
  Hg  Hg1  2  0.0000  0.0000  0.5000  1.0
  Se  Se2  2  0.0000  0.0000  0.0000  1.0
  O  O3  8  0.0456  0.2448  0.1929  1.0
  O  O4  4  0.2207  0.0000  0.9563  1.0
  O  O5  4  0.2320  0.0000  0.5838  1.0
]