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.
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. Both Ta(1)-Ta(5) bond lengths are 2.92 Å. Both Ta(1)-Ta(6) bond lengths are 2.95 Å. All Ta(1)-Ta(2) bond lengths are 2.76 Å. There are two shorter (3.05 Å) and two longer (3.07 Å) Ta(1)-Ta(4) bond lengths. 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. The Ta(2)-Ta(2) bond length is 2.79 Å. There is one shorter (3.11 Å) and one longer (3.13 Å) Ta(2)-Ta(4) bond length. There is one shorter (2.93 Å) and one longer (2.97 Å) Ta(2)-Ta(5) bond length. There is one shorter (2.97 Å) and one longer (3.00 Å) Ta(2)-Ta(6) bond length. There are a spread of Ta(2)-Ta(3) bond distances ranging from 2.87-2.91 Å. 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. The Ta(3)-Ta(4) bond length is 2.82 Å. There is one shorter (3.24 Å) and one longer (3.26 Å) Ta(3)-Ta(5) bond length. Both Ta(3)-Ta(6) bond lengths are 3.22 Å. There are a spread of Ta(3)-Ta(3) bond distances ranging from 2.72-3.33 Å. 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. The Ta(4)-Ta(4) bond length is 3.04 Å. There are two shorter (3.32 Å) and one longer (3.39 Å) Ta(4)-Ta(5) bond length. There are two shorter (3.29 Å) and one longer (3.34 Å) Ta(4)-Ta(6) bond length. 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. There is one shorter (2.65 Å) and one longer (2.66 Å) Ta(5)-Ta(6) bond length. 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.