data_VTcB2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.78
_cell_length_b   3.78
_cell_length_c   2.73
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   92.11
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VTcB2
_chemical_formula_sum   'V1 Tc1 B2'
_cell_volume   39.01
_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
  V  V3  1  0.0  0.0  0.0  1.0
  Tc  Tc2  1  0.62  0.0  0.0  1.0
  B  B0  1  0.31  0.64  0.36  1.0
  B  B1  1  0.31  0.36  0.36  1.0

data_VTcB2
_symmetry_space_group_name_H-M   Pm
_cell_length_a   2.73
_cell_length_b   3.78
_cell_length_c   3.78
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   VTcB2
_chemical_formula_sum   'V1 Tc1 B2'
_cell_volume   39.04
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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
  V  V0  1  0.0  0.0  0.0  1.0
  Tc  Tc1  1  -0.0  0.0  0.62  1.0
  B  B2  2  0.36  0.36  0.31  1.0

V Tc B B
VTcB2 crystallizes in the monoclinic Pm space group. V(1) is bonded in a 3-coordinate geometry to one Tc(1) and four equivalent B(1) atoms. The V(1)-Tc(1) bond length is 1.42 Å. There are two shorter (2.06 Å) and two longer (2.51 Å) V(1)-B(1) bond lengths. Tc(1) is bonded in a 1-coordinate geometry to one V(1) and four equivalent B(1) atoms. There are two shorter (2.06 Å) and two longer (2.51 Å) Tc(1)-B(1) bond lengths. B(1) is bonded in a 5-coordinate geometry to two equivalent V(1), two equivalent Tc(1), and one B(1) atom. The B(1)-B(1) bond length is 1.05 Å.