UNiSi crystallizes in the orthorhombic Pnma space group. U(1) is bonded in a 11-coordinate geometry to two equivalent U(1), four equivalent Ni(1), and five equivalent Si(1) atoms. Ni(1) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to five equivalent U(1) and four equivalent Ni(1) atoms.
UNiSi crystallizes in the orthorhombic Pnma space group. U(1) is bonded in a 11-coordinate geometry to two equivalent U(1), four equivalent Ni(1), and five equivalent Si(1) atoms. Both U(1)-U(1) bond lengths are 2.65 Å. There are a spread of U(1)-Ni(1) bond distances ranging from 2.93-3.04 Å. There are three shorter (2.88 Å) and two longer (2.93 Å) U(1)-Si(1) bond lengths. Ni(1) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent Si(1) atoms. There are a spread of Ni(1)-Si(1) bond distances ranging from 2.33-2.46 Å. Si(1) is bonded in a 9-coordinate geometry to five equivalent U(1) and four equivalent Ni(1) atoms.