data_LaTc3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.53
_cell_length_b   5.53
_cell_length_c   5.53
_cell_angle_alpha   147.1
_cell_angle_beta   126.03
_cell_angle_gamma   64.67
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaTc3
_chemical_formula_sum   'La1 Tc3'
_cell_volume   73.5
_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  0.67  1.0
  Tc  Tc1  1  0.0  0.51  0.61  1.0
  Tc  Tc2  1  0.0  0.0  0.0  1.0
  Tc  Tc3  1  0.57  0.0  0.06  1.0

data_LaTc3
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.13
_cell_length_b   5.02
_cell_length_c   5.53
_cell_angle_alpha   116.99
_cell_angle_beta   106.45
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaTc3
_chemical_formula_sum   'La1 Tc3'
_cell_volume   73.5
_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  0.67  0.67  1.0
  Tc  Tc1  1  0.0  0.0  0.0  1.0
  Tc  Tc2  1  0.0  0.06  0.5  1.0
  Tc  Tc3  1  0.49  0.1  0.1  1.0

La Tc Tc Tc
LaTc3 crystallizes in the triclinic P1 space group. La(1) is bonded in a 1-coordinate geometry to one Tc(2), two equivalent Tc(1), and two equivalent Tc(3) atoms. The La(1)-Tc(2) bond length is 1.80 Å. There is one shorter (2.43 Å) and one longer (3.12 Å) La(1)-Tc(1) bond length. There is one shorter (2.55 Å) and one longer (2.76 Å) La(1)-Tc(3) bond length. There are three inequivalent Tc sites. In the first Tc site, Tc(1) is bonded in a 5-coordinate geometry to two equivalent La(1), one Tc(3), and two equivalent Tc(2) atoms. The Tc(1)-Tc(3) bond length is 2.40 Å. There is one shorter (1.48 Å) and one longer (1.84 Å) Tc(1)-Tc(2) bond length. In the second Tc site, Tc(2) is bonded in a 1-coordinate geometry to one La(1) and two equivalent Tc(1) atoms. In the third Tc site, Tc(3) is bonded in a 2-coordinate geometry to two equivalent La(1) and one Tc(1) atom.