data_[Nd6Hg6As6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nd  1.1400  1.8500  1.2765
  Hg  2.0000  1.5000  1.2450
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [4.9915]
_cell_length_b [4.9915]
_cell_length_c [26.1731]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [NdHgAs]
_chemical_formula_sum '[Nd6 Hg6 As6]'
_cell_volume [564.7405]
_cell_formula_units_Z [6]
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
[
  Nd  Nd0  6  0.0000  0.0000  0.3945  1
  Hg  Hg1  6  0.0000  0.0000  0.1742  1
  As  As2  6  0.0000  0.0000  0.2839  1
]