data_[K16V8Hg8Se32]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  V  1.6300  1.3500  0.7775
  Hg  2.0000  1.5000  1.2450
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Fddd]
_cell_length_a [6.2632]
_cell_length_b [13.6573]
_cell_length_c [24.1830]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [70]
_chemical_formula_structural [K2VHgSe4]
_chemical_formula_sum '[K16 V8 Hg8 Se32]'
_cell_volume [2068.5598]
_cell_formula_units_Z [8]
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  16  0.0000  0.0000  0.1834  1.0
  V  V1  8  0.0000  0.0000  0.5000  1.0
  Hg  Hg2  8  0.0000  0.0000  0.0000  1.0
  Se  Se3  32  0.0389  0.1476  0.6922  1.0
]