Be2U4C5 crystallizes in the monoclinic C2/m space group. Be(1) is bonded in a T-shaped geometry to one C(2) and two equivalent C(1) atoms. U(1) is bonded in a 6-coordinate geometry to one C(2) and five equivalent C(1) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Be(1) and five equivalent U(1) atoms. In the second C site, C(2) is bonded in an octahedral geometry to two equivalent Be(1) and four equivalent U(1) atoms.
Be2U4C5 crystallizes in the monoclinic C2/m space group. Be(1) is bonded in a T-shaped geometry to one C(2) and two equivalent C(1) atoms. The Be(1)-C(2) bond length is 1.76 Å. Both Be(1)-C(1) bond lengths are 1.82 Å. U(1) is bonded in a 6-coordinate geometry to one C(2) and five equivalent C(1) atoms. The U(1)-C(2) bond length is 2.30 Å. There are a spread of U(1)-C(1) bond distances ranging from 2.26-2.63 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Be(1) and five equivalent U(1) atoms. In the second C site, C(2) is bonded in an octahedral geometry to two equivalent Be(1) and four equivalent U(1) atoms.