data_LaTaTc2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.76
_cell_length_b   5.76
_cell_length_c   5.76
_cell_angle_alpha   140.5
_cell_angle_beta   140.5
_cell_angle_gamma   57.1
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaTaTc2
_chemical_formula_sum   'La1 Ta1 Tc2'
_cell_volume   76.61
_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
  La  La0  1  0.0  0.0  0.06  1.0
  Ta  Ta1  1  0.0  0.95  0.53  1.0
  Tc  Tc2  1  0.0  0.0  0.0  1.0
  Tc  Tc3  1  0.95  0.0  0.53  1.0

data_LaTaTc2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.89
_cell_length_b   3.89
_cell_length_c   5.76
_cell_angle_alpha   109.75
_cell_angle_beta   109.75
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaTaTc2
_chemical_formula_sum   'La1 Ta1 Tc2'
_cell_volume   76.61
_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
  La  La0  1  0.06  0.06  0.06  1.0
  Ta  Ta1  1  0.58  0.53  0.58  1.0
  Tc  Tc2  1  0.0  0.0  0.0  1.0
  Tc  Tc3  1  0.53  0.58  0.58  1.0

La Ta Tc Tc
La Ta Tc Tc 0 2 o o o 1 3 - + o 
LaTcTcTa is beta oxygen-derived structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one LaTc cluster and one TcTa cluster. In the LaTc cluster, La(1) is bonded in a single-bond geometry to one Tc(1) atom. The La(1)-Tc(1) bond length is 0.33 Å. Tc(1) is bonded in a single-bond geometry to one La(1) atom. In the TcTa cluster, Ta(1) is bonded in a single-bond geometry to one Tc(2) atom. The Ta(1)-Tc(2) bond length is 0.30 Å. Tc(2) is bonded in a single-bond geometry to one Ta(1) atom.