U2Rh3Si5 crystallizes in the orthorhombic Ibam space group. U(1) is bonded in a 17-coordinate geometry to two equivalent Rh(2), five equivalent Rh(1), two equivalent Si(1), four equivalent Si(2), and four equivalent Si(3) atoms. There are two inequivalent Rh sites. In the first Rh site, Rh(2) is bonded in a 6-coordinate geometry to four equivalent U(1), two equivalent Si(2), and four equivalent Si(3) atoms. In the second Rh site, Rh(1) is bonded in a 5-coordinate geometry to five equivalent U(1), one Si(3), two equivalent Si(1), and two equivalent Si(2) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 4-coordinate geometry to four equivalent U(1) and four equivalent Rh(1) atoms. In the second Si site, Si(2) is bonded in a 3-coordinate geometry to four equivalent U(1), one Rh(2), two equivalent Rh(1), and two equivalent Si(3) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to four equivalent U(1), one Rh(1), two equivalent Rh(2), and two equivalent Si(2) atoms.
U2Rh3Si5 crystallizes in the orthorhombic Ibam space group. U(1) is bonded in a 17-coordinate geometry to two equivalent Rh(2), five equivalent Rh(1), two equivalent Si(1), four equivalent Si(2), and four equivalent Si(3) atoms. Both U(1)-Rh(2) bond lengths are 3.40 Å. There are a spread of U(1)-Rh(1) bond distances ranging from 3.04-3.38 Å. Both U(1)-Si(1) bond lengths are 3.11 Å. There are two shorter (3.18 Å) and two longer (3.21 Å) U(1)-Si(2) bond lengths. There are a spread of U(1)-Si(3) bond distances ranging from 2.97-3.14 Å. There are two inequivalent Rh sites. In the first Rh site, Rh(2) is bonded in a 6-coordinate geometry to four equivalent U(1), two equivalent Si(2), and four equivalent Si(3) atoms. Both Rh(2)-Si(2) bond lengths are 2.55 Å. All Rh(2)-Si(3) bond lengths are 2.44 Å. In the second Rh site, Rh(1) is bonded in a 5-coordinate geometry to five equivalent U(1), one Si(3), two equivalent Si(1), and two equivalent Si(2) atoms. The Rh(1)-Si(3) bond length is 2.35 Å. Both Rh(1)-Si(1) bond lengths are 2.43 Å. Both Rh(1)-Si(2) bond lengths are 2.41 Å. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 4-coordinate geometry to four equivalent U(1) and four equivalent Rh(1) atoms. In the second Si site, Si(2) is bonded in a 3-coordinate geometry to four equivalent U(1), one Rh(2), two equivalent Rh(1), and two equivalent Si(3) atoms. Both Si(2)-Si(3) bond lengths are 2.50 Å. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to four equivalent U(1), one Rh(1), two equivalent Rh(2), and two equivalent Si(2) atoms.