ScRhSi2 crystallizes in the orthorhombic Pnma space group. Sc(1) is bonded in a 12-coordinate geometry to five equivalent Rh(1), three equivalent Si(1), and four equivalent Si(2) atoms. Rh(1) is bonded in a 8-coordinate geometry to five equivalent Sc(1), two equivalent Si(2), and three equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Sc(1), two equivalent Rh(1), and three equivalent Si(1) atoms. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Sc(1), three equivalent Rh(1), and three equivalent Si(2) atoms.
ScRhSi2 crystallizes in the orthorhombic Pnma space group. Sc(1) is bonded in a 12-coordinate geometry to five equivalent Rh(1), three equivalent Si(1), and four equivalent Si(2) atoms. There are a spread of Sc(1)-Rh(1) bond distances ranging from 2.86-3.11 Å. There is one shorter (2.76 Å) and two longer (2.85 Å) Sc(1)-Si(1) bond lengths. There are two shorter (2.80 Å) and two longer (2.81 Å) Sc(1)-Si(2) bond lengths. Rh(1) is bonded in a 8-coordinate geometry to five equivalent Sc(1), two equivalent Si(2), and three equivalent Si(1) atoms. There is one shorter (2.41 Å) and one longer (2.45 Å) Rh(1)-Si(2) bond length. There are two shorter (2.42 Å) and one longer (2.53 Å) Rh(1)-Si(1) bond length. There are two inequivalent Si sites. In the first Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Sc(1), two equivalent Rh(1), and three equivalent Si(1) atoms. There is one shorter (2.49 Å) and two longer (2.64 Å) Si(2)-Si(1) bond lengths. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Sc(1), three equivalent Rh(1), and three equivalent Si(2) atoms.