data_LaTc3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.56
_cell_length_b   9.56
_cell_length_c   9.56
_cell_angle_alpha   154.45
_cell_angle_beta   154.45
_cell_angle_gamma   36.44
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaTc3
_chemical_formula_sum   'La2 Tc6'
_cell_volume   162.22
_cell_formula_units_Z   2
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  0.09  1.0
  La  La1  1  0.0  0.0  0.07  1.0
  Tc  Tc2  1  0.0  0.11  0.0  1.0
  Tc  Tc3  1  0.11  0.0  0.0  1.0
  Tc  Tc4  1  0.0  0.11  0.54  1.0
  Tc  Tc5  1  0.11  0.0  0.54  1.0
  Tc  Tc6  1  0.0  0.0  0.2  1.0
  Tc  Tc7  1  0.0  0.0  0.96  1.0

data_LaTc3
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.98
_cell_length_b   5.98
_cell_length_c   9.56
_cell_angle_alpha   90.0
_cell_angle_beta   108.22
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   LaTc3
_chemical_formula_sum   'La4 Tc12'
_cell_volume   324.45
_cell_formula_units_Z   4
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
  La  La0  2  0.07  0.0  0.07  1.0
  La  La1  2  0.09  0.0  0.09  1.0
  Tc  Tc2  4  0.44  0.56  0.89  1.0
  Tc  Tc3  4  0.48  0.06  0.43  1.0
  Tc  Tc4  2  0.2  0.0  0.2  1.0
  Tc  Tc5  2  0.46  0.5  0.96  1.0

La La Tc Tc Tc Tc Tc Tc
LaTc2Tc crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two LaTc2 clusters and two Tc clusters. In each LaTc2 cluster, there are two inequivalent La sites. In the first La site, La(1) is bonded in a linear geometry to one La(2) and one Tc(3) atom. The La(1)-La(2) bond length is 0.11 Å. The La(1)-Tc(3) bond length is 1.12 Å. In the second La site, La(2) is bonded in a distorted linear geometry to one La(1) and one Tc(4) atom. The La(2)-Tc(4) bond length is 1.12 Å. There are three inequivalent Tc sites. In the first Tc site, Tc(1) is bonded in a 2-coordinate geometry to one Tc(1) and one Tc(4) atom. The Tc(1)-Tc(1) bond length is 0.68 Å. The Tc(1)-Tc(4) bond length is 0.72 Å. In the second Tc site, Tc(3) is bonded in a single-bond geometry to one La(1) atom. In the third Tc site, Tc(4) is bonded in a distorted single-bond geometry to one La(2) and two equivalent Tc(1) atoms. In each Tc cluster, Tc(2) is bonded in a single-bond geometry to one Tc(2) atom. The Tc(2)-Tc(2) bond length is 0.68 Å.