data_Na2LaHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.68
_cell_length_b   6.68
_cell_length_c   3.35
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   119.43
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2LaHg
_chemical_formula_sum   'Na2 La1 Hg1'
_cell_volume   130.45
_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  Na2  1  0.69  0.89  0.68  1.0
  Na  Na3  1  0.69  0.11  0.68  1.0
  La  La1  1  0.0  0.0  0.0  1.0
  Hg  Hg0  1  0.37  0.0  0.0  1.0

data_Na2LaHg
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.35
_cell_length_b   6.68
_cell_length_c   6.68
_cell_angle_alpha   119.43
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2LaHg
_chemical_formula_sum   'Na2 La1 Hg1'
_cell_volume   130.45
_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  0.68  0.69  0.11  1.0
  Na  Na1  1  0.68  0.69  0.89  1.0
  La  La2  1  0.0  0.0  0.0  1.0
  Hg  Hg3  1  0.0  0.37  0.0  1.0

Na Na La Hg