U is alpha Np structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 4-coordinate geometry to four equivalent U(2) atoms. In the second U site, U(2) is bonded in a 4-coordinate geometry to four equivalent U(1) atoms.
U is alpha Np structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 4-coordinate geometry to four equivalent U(2) atoms. There are a spread of U(1)-U(2) bond distances ranging from 2.64-2.69 Å. In the second U site, U(2) is bonded in a 4-coordinate geometry to four equivalent U(1) atoms.