data_BeTl2B
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.19
_cell_length_b   3.19
_cell_length_c   8.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   108.71
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeTl2B
_chemical_formula_sum   'Be1 Tl2 B1'
_cell_volume   80.47
_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
  Be  Be1  1  0.0  0.0  0.04  1.0
  Tl  Tl2  1  0.86  0.0  0.56  1.0
  Tl  Tl3  1  0.0  0.0  0.72  1.0
  B  B0  1  0.86  0.0  0.19  1.0

data_BeTl2B
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.19
_cell_length_b   3.19
_cell_length_c   8.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   108.71
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeTl2B
_chemical_formula_sum   'Be1 Tl2 B1'
_cell_volume   80.47
_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
  Be  Be0  1  0.0  0.0  0.04  1.0
  Tl  Tl1  1  0.0  0.0  0.72  1.0
  Tl  Tl2  1  0.86  0.0  0.56  1.0
  B  B3  1  0.86  0.0  0.19  1.0

Be Tl Tl B
Be Tl Tl B 0 3 - o o 1 2 + o o 
BeB(Tl)2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one dithallium molecule and one BeB cluster. In the BeB cluster, Be(1) is bonded in a single-bond geometry to one B(1) atom. The Be(1)-B(1) bond length is 1.30 Å. B(1) is bonded in a single-bond geometry to one Be(1) atom.