UWC2 crystallizes in the orthorhombic Pnma space group. U(1) is bonded in a 6-coordinate geometry to one W(1), three equivalent C(1), and three equivalent C(2) atoms. W(1) is bonded in a 6-coordinate geometry to one U(1), two equivalent C(1), and three equivalent C(2) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to three equivalent U(1), two equivalent W(1), and one C(2) atom. In the second C site, C(2) is bonded to three equivalent U(1), three equivalent W(1), and one C(1) atom to form distorted edge-sharing CU3W3C pentagonal bipyramids.
UWC2 crystallizes in the orthorhombic Pnma space group. U(1) is bonded in a 6-coordinate geometry to one W(1), three equivalent C(1), and three equivalent C(2) atoms. The U(1)-W(1) bond length is 2.91 Å. There are a spread of U(1)-C(1) bond distances ranging from 2.28-2.76 Å. There is one shorter (2.40 Å) and two longer (2.59 Å) U(1)-C(2) bond lengths. W(1) is bonded in a 6-coordinate geometry to one U(1), two equivalent C(1), and three equivalent C(2) atoms. Both W(1)-C(1) bond lengths are 2.06 Å. There is one shorter (2.14 Å) and two longer (2.32 Å) W(1)-C(2) bond lengths. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to three equivalent U(1), two equivalent W(1), and one C(2) atom. The C(1)-C(2) bond length is 1.62 Å. In the second C site, C(2) is bonded to three equivalent U(1), three equivalent W(1), and one C(1) atom to form distorted edge-sharing CU3W3C pentagonal bipyramids.