data_[Np3Hg3S6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Np  1.3600  1.7500  1.0000
  Hg  2.0000  1.5000  1.2450
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [3.9972]
_cell_length_b [3.9972]
_cell_length_c [30.7088]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [NpHgS2]
_chemical_formula_sum '[Np3 Hg3 S6]'
_cell_volume [424.9222]
_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
[
  Np  Np0  3  -0.0000  -0.0000  0.5000  1
  Hg  Hg1  3  0.0000  0.0000  0.0000  1
  S  S2  6  0.0000  0.0000  0.1226  1
]