data_TlCr2Cl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.24
_cell_length_b   3.24
_cell_length_c   7.6
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TlCr2Cl
_chemical_formula_sum   'Tl1 Cr2 Cl1'
_cell_volume   79.85
_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  0.0  0.0  0.8  1.0
  Cr  Cr1  1  0.62  0.62  0.84  1.0
  Cr  Cr2  1  0.62  0.62  0.76  1.0
  Cl  Cl0  1  0.0  0.0  0.0  1.0

data_TlCr2Cl
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.58
_cell_length_b   4.58
_cell_length_c   7.6
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   TlCr2Cl
_chemical_formula_sum   'Tl2 Cr4 Cl2'
_cell_volume   159.7
_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  0.8  1.0
  Cr  Cr1  2  0.12  0.5  0.76  1.0
  Cr  Cr2  2  0.12  0.5  0.84  1.0
  Cl  Cl3  2  0.0  0.0  0.0  1.0

Tl Cr Cr Cl
Tl Cr Cr Cl 0 2 - - o 0 1 - - o 0 3 o o + 1 2 o o o 
(Cr)2TlCl crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two thallium chloride molecules and two Cr clusters. In each Cr cluster, there are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a distorted single-bond geometry to one Cr(2) atom. The Cr(1)-Cr(2) bond length is 0.64 Å. In the second Cr site, Cr(2) is bonded in a single-bond geometry to one Cr(1) atom.