GdRh2Si2 crystallizes in the tetragonal I4/mmm space group. Gd(1) is bonded in a 16-coordinate geometry to eight equivalent Rh(1) and eight equivalent Si(1) atoms. Rh(1) is bonded to four equivalent Gd(1) and four equivalent Si(1) atoms to form a mixture of distorted corner, edge, and face-sharing RhGd4Si4 tetrahedra. Si(1) is bonded in a 9-coordinate geometry to four equivalent Gd(1), four equivalent Rh(1), and one Si(1) atom.
GdRh2Si2 crystallizes in the tetragonal I4/mmm space group. Gd(1) is bonded in a 16-coordinate geometry to eight equivalent Rh(1) and eight equivalent Si(1) atoms. All Gd(1)-Rh(1) bond lengths are 3.22 Å. All Gd(1)-Si(1) bond lengths are 3.12 Å. Rh(1) is bonded to four equivalent Gd(1) and four equivalent Si(1) atoms to form a mixture of distorted corner, edge, and face-sharing RhGd4Si4 tetrahedra. All Rh(1)-Si(1) bond lengths are 2.39 Å. Si(1) is bonded in a 9-coordinate geometry to four equivalent Gd(1), four equivalent Rh(1), and one Si(1) atom. The Si(1)-Si(1) bond length is 2.47 Å.