data_Tc2B
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.0
_cell_length_b   3.0
_cell_length_c   4.69
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tc2B
_chemical_formula_sum   'Tc2 B1'
_cell_volume   36.56
_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
  Tc  Tc1  1  0.5  0.87  0.46  1.0
  Tc  Tc2  1  0.0  0.73  0.23  1.0
  B  B0  1  0.0  0.0  0.0  1.0

data_Tc2B
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.0
_cell_length_b   3.0
_cell_length_c   4.69
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tc2B
_chemical_formula_sum   'Tc2 B1'
_cell_volume   36.56
_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
  Tc  Tc0  1  0.0  0.73  0.23  1.0
  Tc  Tc1  1  0.5  0.87  0.46  1.0
  B  B2  1  0.0  0.0  0.0  1.0

Tc Tc B
Tc2B crystallizes in the triclinic P1 space group. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded in a 4-coordinate geometry to three equivalent Tc(2) and one B(1) atom. There are a spread of Tc(1)-Tc(2) bond distances ranging from 1.74-2.52 Å. The Tc(1)-B(1) bond length is 2.86 Å. In the second Tc site, Tc(2) is bonded in a distorted single-bond geometry to three equivalent Tc(1) and one B(1) atom. The Tc(2)-B(1) bond length is 1.33 Å. B(1) is bonded in a single-bond geometry to one Tc(1) and one Tc(2) atom.