Y2(IrSi)3 crystallizes in the tetragonal P4/mmm space group. Y(1) is bonded to four equivalent Y(1), one Ir(1), and one Si(1) atom to form a mixture of distorted corner and edge-sharing YY4SiIr octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a distorted linear geometry to one Y(1) and one Si(2) atom. In the second Ir site, Ir(2) is bonded in a distorted linear geometry to two equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a distorted linear geometry to one Y(1) and one Ir(2) atom. In the second Si site, Si(2) is bonded in a linear geometry to two equivalent Ir(1) atoms.
Y2(IrSi)3 crystallizes in the tetragonal P4/mmm space group. Y(1) is bonded to four equivalent Y(1), one Ir(1), and one Si(1) atom to form a mixture of distorted corner and edge-sharing YY4SiIr octahedra. The corner-sharing octahedra are not tilted. All Y(1)-Y(1) bond lengths are 2.79 Å. The Y(1)-Ir(1) bond length is 2.68 Å. The Y(1)-Si(1) bond length is 2.95 Å. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a distorted linear geometry to one Y(1) and one Si(2) atom. The Ir(1)-Si(2) bond length is 2.26 Å. In the second Ir site, Ir(2) is bonded in a distorted linear geometry to two equivalent Si(1) atoms. Both Ir(2)-Si(1) bond lengths are 2.30 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a distorted linear geometry to one Y(1) and one Ir(2) atom. In the second Si site, Si(2) is bonded in a linear geometry to two equivalent Ir(1) atoms.