data_Na2HgW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.07
_cell_length_b   5.07
_cell_length_c   5.07
_cell_angle_alpha   121.85
_cell_angle_beta   121.85
_cell_angle_gamma   86.82
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2HgW
_chemical_formula_sum   'Na2 Hg1 W1'
_cell_volume   89.66
_cell_formula_units_Z   1
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
  Na  Na1  1  0.0  0.0  0.0  1.0
  Na  Na2  1  0.47  0.0  0.84  1.0
  Hg  Hg0  1  0.0  0.47  0.84  1.0
  W  W3  1  0.0  0.0  0.69  1.0

data_Na2HgW
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.93
_cell_length_b   4.93
_cell_length_c   5.07
_cell_angle_alpha   119.07
_cell_angle_beta   119.07
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2HgW
_chemical_formula_sum   'Na2 Hg1 W1'
_cell_volume   89.66
_cell_formula_units_Z   1
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
  Na  Na0  1  0.0  0.0  0.0  1.0
  Na  Na1  1  0.16  0.0  0.62  1.0
  Hg  Hg2  1  0.62  0.47  0.62  1.0
  W  W3  1  0.31  0.0  0.31  1.0

Na Na Hg W