data_Na2TcHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.19
_cell_length_b   6.19
_cell_length_c   6.19
_cell_angle_alpha   153.22
_cell_angle_beta   131.11
_cell_angle_gamma   56.62
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2TcHg
_chemical_formula_sum   'Na2 Tc1 Hg1'
_cell_volume   80.12
_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  0.43  0.0  0.75  1.0
  Na  Na2  1  0.0  0.56  0.71  1.0
  Tc  Tc3  1  0.0  0.0  0.0  1.0
  Hg  Hg0  1  0.0  0.0  0.45  1.0

data_Na2TcHg
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.87
_cell_length_b   5.12
_cell_length_c   6.19
_cell_angle_alpha   114.45
_cell_angle_beta   103.39
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2TcHg
_chemical_formula_sum   'Na2 Tc1 Hg1'
_cell_volume   80.12
_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  0.29  0.86  0.86  1.0
  Na  Na1  1  0.69  0.25  0.69  1.0
  Tc  Tc2  1  0.0  0.0  0.0  1.0
  Hg  Hg3  1  0.55  0.55  0.55  1.0

Na Na Tc Hg