data_Y2Ta
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.09
_cell_length_b   6.09
_cell_length_c   6.09
_cell_angle_alpha   102.7
_cell_angle_beta   102.7
_cell_angle_gamma   124.07
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Y2Ta
_chemical_formula_sum   'Y4 Ta2'
_cell_volume   165.39
_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
  Y  Y2  1  0.56  0.24  0.0  1.0
  Y  Y3  1  0.56  0.76  0.86  1.0
  Y  Y4  1  0.24  0.05  0.0  1.0
  Y  Y5  1  0.24  0.56  0.86  1.0
  Ta  Ta0  1  0.0  0.0  0.43  1.0
  Ta  Ta1  1  0.0  0.0  0.28  1.0

data_Y2Ta
_symmetry_space_group_name_H-M   P1
_cell_length_a   5.71
_cell_length_b   6.09
_cell_length_c   6.09
_cell_angle_alpha   77.3
_cell_angle_beta   62.04
_cell_angle_gamma   62.04
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Y2Ta
_chemical_formula_sum   'Y4 Ta2'
_cell_volume   165.39
_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
  Y  Y0  1  0.05  0.2  -0.0  1.0
  Y  Y1  1  0.24  0.32  -0.0  1.0
  Y  Y2  1  0.56  0.68  0.14  1.0
  Y  Y3  1  0.76  0.8  0.14  1.0
  Ta  Ta4  1  0.0  0.0  0.57  1.0
  Ta  Ta5  1  0.0  0.0  0.72  1.0

Y Y Y Y Ta Ta
Y2Ta is Protactinium structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Y2Ta cluster. There are four inequivalent Y sites. In the first Y site, Y(1) is bonded in a distorted single-bond geometry to one Y(3) atom. The Y(1)-Y(3) bond length is 1.61 Å. In the second Y site, Y(2) is bonded in a distorted bent 120 degrees geometry to one Y(4) and one Ta(2) atom. The Y(2)-Y(4) bond length is 1.61 Å. The Y(2)-Ta(2) bond length is 2.63 Å. In the third Y site, Y(3) is bonded in a 2-coordinate geometry to one Y(1) and one Ta(2) atom. The Y(3)-Ta(2) bond length is 2.48 Å. In the fourth Y site, Y(4) is bonded in a 1-coordinate geometry to one Y(2) atom. There are two inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a distorted single-bond geometry to one Ta(2) atom. The Ta(1)-Ta(2) bond length is 0.87 Å. In the second Ta site, Ta(2) is bonded in a 3-coordinate geometry to one Y(2), one Y(3), and one Ta(1) atom.