Gd(IrSi)2 crystallizes in the tetragonal I4/mmm space group. Gd(1) is bonded in a 16-coordinate geometry to eight equivalent Ir(1) and eight equivalent Si(1) atoms. Ir(1) is bonded to four equivalent Gd(1) and four equivalent Si(1) atoms to form a mixture of distorted corner, face, and edge-sharing IrGd4Si4 tetrahedra. Si(1) is bonded in a 9-coordinate geometry to four equivalent Gd(1), four equivalent Ir(1), and one Si(1) atom.
Gd(IrSi)2 crystallizes in the tetragonal I4/mmm space group. Gd(1) is bonded in a 16-coordinate geometry to eight equivalent Ir(1) and eight equivalent Si(1) atoms. All Gd(1)-Ir(1) bond lengths are 3.25 Å. All Gd(1)-Si(1) bond lengths are 3.15 Å. Ir(1) is bonded to four equivalent Gd(1) and four equivalent Si(1) atoms to form a mixture of distorted corner, face, and edge-sharing IrGd4Si4 tetrahedra. All Ir(1)-Si(1) bond lengths are 2.42 Å. Si(1) is bonded in a 9-coordinate geometry to four equivalent Gd(1), four equivalent Ir(1), and one Si(1) atom. The Si(1)-Si(1) bond length is 2.46 Å.