U2Tc crystallizes in the orthorhombic Cmmm space group. There are three inequivalent U sites. In the first U site, U(1) is bonded in a 4-coordinate geometry to two equivalent U(2) and four equivalent Tc(1) atoms. In the second U site, U(2) is bonded in a 14-coordinate geometry to two equivalent U(2), four equivalent U(1), four equivalent U(3), and four equivalent Tc(1) atoms. In the third U site, U(3) is bonded in a 10-coordinate geometry to two equivalent U(3), four equivalent U(2), and four equivalent Tc(1) atoms. Tc(1) is bonded in a 8-coordinate geometry to two equivalent U(2), two equivalent U(3), four equivalent U(1), and two equivalent Tc(1) atoms.
U2Tc crystallizes in the orthorhombic Cmmm space group. There are three inequivalent U sites. In the first U site, U(1) is bonded in a 4-coordinate geometry to two equivalent U(2) and four equivalent Tc(1) atoms. Both U(1)-U(2) bond lengths are 2.97 Å. All U(1)-Tc(1) bond lengths are 2.89 Å. In the second U site, U(2) is bonded in a 14-coordinate geometry to two equivalent U(2), four equivalent U(1), four equivalent U(3), and four equivalent Tc(1) atoms. Both U(2)-U(2) bond lengths are 3.05 Å. All U(2)-U(3) bond lengths are 2.89 Å. All U(2)-Tc(1) bond lengths are 3.61 Å. In the third U site, U(3) is bonded in a 10-coordinate geometry to two equivalent U(3), four equivalent U(2), and four equivalent Tc(1) atoms. Both U(3)-U(3) bond lengths are 3.05 Å. All U(3)-Tc(1) bond lengths are 3.06 Å. Tc(1) is bonded in a 8-coordinate geometry to two equivalent U(2), two equivalent U(3), four equivalent U(1), and two equivalent Tc(1) atoms. Both Tc(1)-Tc(1) bond lengths are 2.71 Å.