U is beta Uranium structured and crystallizes in the tetragonal P4_2nm space group. There are nine inequivalent U sites. In the first U site, U(1) is bonded to two equivalent U(3), two equivalent U(4), four equivalent U(2), and four equivalent U(5) atoms to form distorted edge-sharing UU12 cuboctahedra. In the second U site, U(2) is bonded in a 2-coordinate geometry to two equivalent U(1); two U(6,6); three equivalent U(4); and four equivalent U(5) atoms. In the third U site, U(3) is bonded in a 1-coordinate geometry to one U(1); two equivalent U(4); four equivalent U(5); and four U(6,6,6,6) atoms. In the fourth U site, U(4) is bonded in a 14-coordinate geometry to one U(1); two equivalent U(3); three equivalent U(2); four equivalent U(5); and four U(6,6) atoms. In the fifth U site, U(5) is bonded in a 12-coordinate geometry to one U(1); one U(5); two equivalent U(2); two equivalent U(3); two equivalent U(4); and four U(6,6) atoms. In the sixth U site, U(6) is bonded in a 14-coordinate geometry to one U(2); two equivalent U(3); two equivalent U(4); four equivalent U(5); and five U(6,6,6) atoms. In the seventh U site, U(6) is bonded in a 14-coordinate geometry to one U(2); two equivalent U(3); two equivalent U(4); four equivalent U(5); and five U(6,6) atoms. In the eighth U site, U(6) is bonded in a 14-coordinate geometry to one U(2); two equivalent U(3); two equivalent U(4); four equivalent U(5); and five U(6,6) atoms. In the ninth U site, U(6) is bonded in a 14-coordinate geometry to one U(2); two equivalent U(3); two equivalent U(4); four equivalent U(5); and five U(6,6) atoms.
U is beta Uranium structured and crystallizes in the tetragonal P4_2nm space group. There are nine inequivalent U sites. In the first U site, U(1) is bonded to two equivalent U(3), two equivalent U(4), four equivalent U(2), and four equivalent U(5) atoms to form distorted edge-sharing UU12 cuboctahedra. Both U(1)-U(3) bond lengths are 3.00 Å. Both U(1)-U(4) bond lengths are 2.93 Å. There are two shorter (3.03 Å) and two longer (3.40 Å) U(1)-U(2) bond lengths. All U(1)-U(5) bond lengths are 2.81 Å. In the second U site, U(2) is bonded in a 2-coordinate geometry to two equivalent U(1); two U(6,6); three equivalent U(4); and four equivalent U(5) atoms. Both U(2)-U(6,6) bond lengths are 2.64 Å. There is one shorter (3.32 Å) and two longer (3.35 Å) U(2)-U(4) bond lengths. There are two shorter (3.17 Å) and two longer (3.39 Å) U(2)-U(5) bond lengths. In the third U site, U(3) is bonded in a 1-coordinate geometry to one U(1); two equivalent U(4); four equivalent U(5); and four U(6,6,6,6) atoms. There is one shorter (2.51 Å) and one longer (3.08 Å) U(3)-U(4) bond length. There are two shorter (2.98 Å) and two longer (3.05 Å) U(3)-U(5) bond lengths. There are two shorter (3.11 Å) and two longer (3.28 Å) U(3)-U(6,6,6,6) bond lengths. In the fourth U site, U(4) is bonded in a 14-coordinate geometry to one U(1); two equivalent U(3); three equivalent U(2); four equivalent U(5); and four U(6,6) atoms. There are two shorter (2.90 Å) and two longer (3.11 Å) U(4)-U(5) bond lengths. There are two shorter (3.14 Å) and two longer (3.29 Å) U(4)-U(6,6) bond lengths. In the fifth U site, U(5) is bonded in a 12-coordinate geometry to one U(1); one U(5); two equivalent U(2); two equivalent U(3); two equivalent U(4); and four U(6,6) atoms. The U(5)-U(5) bond length is 3.08 Å. There are a spread of U(5)-U(6,6) bond distances ranging from 2.64-3.24 Å. In the sixth U site, U(6) is bonded in a 14-coordinate geometry to one U(2); two equivalent U(3); two equivalent U(4); four equivalent U(5); and five U(6,6,6) atoms. There is one shorter (3.03 Å) and four longer (3.52 Å) U(6)-U(6,6,6) bond lengths. In the seventh U site, U(6) is bonded in a 14-coordinate geometry to one U(2); two equivalent U(3); two equivalent U(4); four equivalent U(5); and five U(6,6) atoms. There are a spread of U(6)-U(5) bond distances ranging from 2.64-3.24 Å. The U(6)-U(6) bond length is 3.03 Å. In the eighth U site, U(6) is bonded in a 14-coordinate geometry to one U(2); two equivalent U(3); two equivalent U(4); four equivalent U(5); and five U(6,6) atoms. The U(6)-U(2) bond length is 2.64 Å. There is one shorter (3.14 Å) and one longer (3.29 Å) U(6)-U(4) bond length. In the ninth U site, U(6) is bonded in a 14-coordinate geometry to one U(2); two equivalent U(3); two equivalent U(4); four equivalent U(5); and five U(6,6) atoms. The U(6)-U(2) bond length is 2.64 Å. There is one shorter (3.14 Å) and one longer (3.29 Å) U(6)-U(4) bond length. There are a spread of U(6)-U(5) bond distances ranging from 2.64-3.24 Å. There is one shorter (3.03 Å) and four longer (3.52 Å) U(6)-U(6,6) bond lengths.