U crystallizes in the monoclinic C2/c space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 10-coordinate geometry to two equivalent U(1) and eight equivalent U(2) atoms. In the second U site, U(2) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent U(2) atoms.
U crystallizes in the monoclinic C2/c space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 10-coordinate geometry to two equivalent U(1) and eight equivalent U(2) atoms. Both U(1)-U(1) bond lengths are 3.31 Å. There are a spread of U(1)-U(2) bond distances ranging from 2.63-3.24 Å. In the second U site, U(2) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent U(2) atoms. There are a spread of U(2)-U(2) bond distances ranging from 2.67-3.03 Å.