data_TlSn2Br
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.74
_cell_length_b   5.74
_cell_length_c   3.49
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TlSn2Br
_chemical_formula_sum   'Tl1 Sn2 Br1'
_cell_volume   114.96
_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
  Tl  Tl3  1  0.87  0.87  0.0  1.0
  Sn  Sn1  1  0.0  0.87  0.74  1.0
  Sn  Sn2  1  0.87  0.0  0.74  1.0
  Br  Br0  1  0.0  0.0  0.0  1.0

data_TlSn2Br
_symmetry_space_group_name_H-M   Cm
_cell_length_a   8.12
_cell_length_b   8.12
_cell_length_c   3.49
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   TlSn2Br
_chemical_formula_sum   'Tl2 Sn4 Br2'
_cell_volume   229.91
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Tl  Tl0  2  0.37  0.5  0.0  1.0
  Sn  Sn1  4  0.43  0.43  0.74  1.0
  Br  Br2  2  0.0  0.0  0.0  1.0

Tl Sn Sn Br
Tl Sn Sn Br 0 1 + o - 0 2 o + - 0 3 + + o 1 2 - + o 1 3 o + + 2 3 + o + 