The crystal structure described by Ta is beta Uranium structured and crystallizes in the tetragonal P-42_1m space group. There are six inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to two equivalent Ta(5), two equivalent Ta(6), four equivalent Ta(2), and four equivalent Ta(4) atoms to form a mixture of corner, edge, and face-sharing TaTa12 cuboctahedra. In the second Ta site, Ta(2) is bonded to one Ta(1), one Ta(2), two equivalent Ta(4), two equivalent Ta(5), two equivalent Ta(6), and four equivalent Ta(3) atoms to form a mixture of corner, edge, and face-sharing TaTa12 cuboctahedra. In the third Ta site, Ta(3) is bonded in a 14-coordinate geometry to one Ta(4), two equivalent Ta(5), two equivalent Ta(6), four equivalent Ta(2), and five equivalent Ta(3) atoms. In the fourth Ta site, Ta(4) is bonded in a 15-coordinate geometry to one Ta(4), two equivalent Ta(1), two equivalent Ta(3), three equivalent Ta(5), three equivalent Ta(6), and four equivalent Ta(2) atoms. In the fifth Ta site, Ta(5) is bonded in a 14-coordinate geometry to one Ta(1), two equivalent Ta(6), three equivalent Ta(4), four equivalent Ta(2), and four equivalent Ta(3) atoms. In the sixth Ta site, Ta(6) is bonded in a 14-coordinate geometry to one Ta(1), two equivalent Ta(5), three equivalent Ta(4), four equivalent Ta(2), and four equivalent Ta(3) atoms. is represented by the CIF card [CIF]
data_Ta
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.308
_cell_length_b   10.222
_cell_length_c   10.222
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   554.655
_cell_formula_units_Z   30
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
  Ta  Ta0  1  0.242  0.500  0.000  1.0
  Ta  Ta1  1  0.758  0.000  0.500  1.0
  Ta  Ta2  1  0.243  0.761  0.068  1.0
  Ta  Ta3  1  0.757  0.068  0.239  1.0
  Ta  Ta4  1  0.757  0.932  0.761  1.0
  Ta  Ta5  1  0.243  0.239  0.932  1.0
  Ta  Ta6  1  0.757  0.261  0.432  1.0
  Ta  Ta7  1  0.757  0.739  0.568  1.0
  Ta  Ta8  1  0.243  0.432  0.739  1.0
  Ta  Ta9  1  0.243  0.568  0.261  1.0
  Ta  Ta10  1  0.257  0.035  0.128  1.0
  Ta  Ta11  1  0.743  0.128  0.965  1.0
  Ta  Ta12  1  0.743  0.872  0.035  1.0
  Ta  Ta13  1  0.257  0.965  0.872  1.0
  Ta  Ta14  1  0.743  0.535  0.372  1.0
  Ta  Ta15  1  0.743  0.465  0.628  1.0
  Ta  Ta16  1  0.257  0.372  0.465  1.0
  Ta  Ta17  1  0.257  0.628  0.535  1.0
  Ta  Ta18  1  0.741  0.605  0.105  1.0
  Ta  Ta19  1  0.259  0.105  0.395  1.0
  Ta  Ta20  1  0.259  0.895  0.605  1.0
  Ta  Ta21  1  0.741  0.395  0.895  1.0
  Ta  Ta22  1  0.002  0.819  0.319  1.0
  Ta  Ta23  1  0.998  0.319  0.181  1.0
  Ta  Ta24  1  0.998  0.681  0.819  1.0
  Ta  Ta25  1  0.002  0.181  0.681  1.0
  Ta  Ta26  1  0.499  0.319  0.181  1.0
  Ta  Ta27  1  0.501  0.181  0.681  1.0
  Ta  Ta28  1  0.501  0.819  0.319  1.0
  Ta  Ta29  1  0.499  0.681  0.819  1.0
[/CIF]
.
The crystal structure described by Ta is beta Uranium structured and crystallizes in the tetragonal P-42_1m space group. There are six inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to two equivalent Ta(5), two equivalent Ta(6), four equivalent Ta(2), and four equivalent Ta(4) atoms to form a mixture of corner, edge, and face-sharing TaTa12 cuboctahedra. In the second Ta site, Ta(2) is bonded to one Ta(1), one Ta(2), two equivalent Ta(4), two equivalent Ta(5), two equivalent Ta(6), and four equivalent Ta(3) atoms to form a mixture of corner, edge, and face-sharing TaTa12 cuboctahedra. In the third Ta site, Ta(3) is bonded in a 14-coordinate geometry to one Ta(4), two equivalent Ta(5), two equivalent Ta(6), four equivalent Ta(2), and five equivalent Ta(3) atoms. In the fourth Ta site, Ta(4) is bonded in a 15-coordinate geometry to one Ta(4), two equivalent Ta(1), two equivalent Ta(3), three equivalent Ta(5), three equivalent Ta(6), and four equivalent Ta(2) atoms. In the fifth Ta site, Ta(5) is bonded in a 14-coordinate geometry to one Ta(1), two equivalent Ta(6), three equivalent Ta(4), four equivalent Ta(2), and four equivalent Ta(3) atoms. In the sixth Ta site, Ta(6) is bonded in a 14-coordinate geometry to one Ta(1), two equivalent Ta(5), three equivalent Ta(4), four equivalent Ta(2), and four equivalent Ta(3) atoms. is represented by the CIF card [CIF]
data_Ta
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.308
_cell_length_b   10.222
_cell_length_c   10.222
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   554.655
_cell_formula_units_Z   30
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
  Ta  Ta0  1  0.242  0.500  0.000  1.0
  Ta  Ta1  1  0.758  0.000  0.500  1.0
  Ta  Ta2  1  0.243  0.761  0.068  1.0
  Ta  Ta3  1  0.757  0.068  0.239  1.0
  Ta  Ta4  1  0.757  0.932  0.761  1.0
  Ta  Ta5  1  0.243  0.239  0.932  1.0
  Ta  Ta6  1  0.757  0.261  0.432  1.0
  Ta  Ta7  1  0.757  0.739  0.568  1.0
  Ta  Ta8  1  0.243  0.432  0.739  1.0
  Ta  Ta9  1  0.243  0.568  0.261  1.0
  Ta  Ta10  1  0.257  0.035  0.128  1.0
  Ta  Ta11  1  0.743  0.128  0.965  1.0
  Ta  Ta12  1  0.743  0.872  0.035  1.0
  Ta  Ta13  1  0.257  0.965  0.872  1.0
  Ta  Ta14  1  0.743  0.535  0.372  1.0
  Ta  Ta15  1  0.743  0.465  0.628  1.0
  Ta  Ta16  1  0.257  0.372  0.465  1.0
  Ta  Ta17  1  0.257  0.628  0.535  1.0
  Ta  Ta18  1  0.741  0.605  0.105  1.0
  Ta  Ta19  1  0.259  0.105  0.395  1.0
  Ta  Ta20  1  0.259  0.895  0.605  1.0
  Ta  Ta21  1  0.741  0.395  0.895  1.0
  Ta  Ta22  1  0.002  0.819  0.319  1.0
  Ta  Ta23  1  0.998  0.319  0.181  1.0
  Ta  Ta24  1  0.998  0.681  0.819  1.0
  Ta  Ta25  1  0.002  0.181  0.681  1.0
  Ta  Ta26  1  0.499  0.319  0.181  1.0
  Ta  Ta27  1  0.501  0.181  0.681  1.0
  Ta  Ta28  1  0.501  0.819  0.319  1.0
  Ta  Ta29  1  0.499  0.681  0.819  1.0
[/CIF]
.