data_NaSn2Hg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.24
_cell_length_b   5.29
_cell_length_c   6.33
_cell_angle_alpha   90.0
_cell_angle_beta   91.05
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaSn2Hg
_chemical_formula_sum   'Na1 Sn2 Hg1'
_cell_volume   108.36
_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  0.73  0.0  0.68  1.0
  Sn  Sn2  1  0.38  0.64  0.3  1.0
  Sn  Sn3  1  0.37  0.0  0.58  1.0
  Hg  Hg0  1  0.32  0.64  0.28  1.0

data_NaSn2Hg
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.24
_cell_length_b   5.29
_cell_length_c   6.33
_cell_angle_alpha   90.0
_cell_angle_beta   91.05
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaSn2Hg
_chemical_formula_sum   'Na1 Sn2 Hg1'
_cell_volume   108.36
_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  0.73  0.0  0.68  1.0
  Sn  Sn1  1  0.37  0.0  0.58  1.0
  Sn  Sn2  1  0.38  0.64  0.3  1.0
  Hg  Hg3  1  0.32  0.64  0.28  1.0

Na Sn Sn Hg