data_Tl3C2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.53
_cell_length_b   8.53
_cell_length_c   8.53
_cell_angle_alpha   24.91
_cell_angle_beta   24.91
_cell_angle_gamma   24.91
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tl3C2
_chemical_formula_sum   'Tl3 C2'
_cell_volume   96.65
_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  Tl2  1  0.0  0.0  0.0  1.0
  Tl  Tl3  1  0.0  0.0  0.28  1.0
  Tl  Tl4  1  0.0  0.0  0.49  1.0
  C  C0  1  0.0  0.0  0.71  1.0
  C  C1  1  0.0  0.0  0.05  1.0

data_Tl3C2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.37
_cell_length_b   3.68
_cell_length_c   8.53
_cell_angle_alpha   90.0
_cell_angle_beta   104.42
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Tl3C2
_chemical_formula_sum   'Tl6 C4'
_cell_volume   193.3
_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  -0.0  0.0  0.51  1.0
  Tl  Tl1  2  -0.0  0.0  0.72  1.0
  Tl  Tl2  2  0.0  0.0  0.0  1.0
  C  C3  2  -0.0  0.0  0.95  1.0
  C  C4  2  -0.0  0.0  0.29  1.0

Tl Tl Tl C C