data_KNaTl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.99
_cell_length_b   3.99
_cell_length_c   8.92
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KNaTl
_chemical_formula_sum   'K1 Na1 Tl1'
_cell_volume   122.94
_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
  K  K0  1  1.0  0.3  0.67  1.0
  Na  Na1  1  0.0  0.0  0.38  1.0
  Tl  Tl2  1  1.0  0.15  0.78  1.0

data_KNaTl
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.99
_cell_length_b   6.91
_cell_length_c   8.92
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   KNaTl
_chemical_formula_sum   'K2 Na2 Tl2'
_cell_volume   245.88
_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
  K  K0  2  0.3  0.0  0.67  1.0
  Na  Na1  2  0.0  0.0  0.38  1.0
  Tl  Tl2  2  0.15  0.0  0.78  1.0

K Na Tl
K Na Tl 0 2 o o o 0 1 + o o 
KNaTl crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one KNaTl cluster. K(1) is bonded in a single-bond geometry to one Na(1) and one Tl(1) atom. The K(1)-Na(1) bond length is 2.86 Å. The K(1)-Tl(1) bond length is 1.16 Å. Na(1) is bonded in a distorted single-bond geometry to one K(1) atom. Tl(1) is bonded in a single-bond geometry to one K(1) atom.