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Y2IrCd crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two Y2IrCd ribbons oriented in the (1, 0, 0) direction. Y is bonded in a linear geometry to one Ir and one Cd atom. The Y–Ir bond length is 2.44 Å. The Y–Cd bond length is 3.25 Å. Ir is bonded in a linear geometry to two equivalent Y atoms. Cd is bonded in a linear geometry to two equivalent Y atoms.
Y4IrCd crystallizes in the cubic F-43m space group. The structure is three-dimensional. there are three inequivalent Y sites. In the first Y site, Y is bonded in a 3-coordinate geometry to three equivalent Ir and three equivalent Cd atoms. All Y–Ir bond lengths are 2.85 Å. All Y–Cd bond lengths are 3.44 Å. In the second Y site, Y is bonded in a distorted bent 150 degrees geometry to two equivalent Ir and two equivalent Cd atoms. Both Y–Ir bond lengths are 2.82 Å. Both Y–Cd bond lengths are 3.52 Å. In the third Y site, Y is bonded in a 4-coordinate geometry to two equivalent Ir and two equivalent Cd atoms. Both Y–Ir bond lengths are 3.50 Å. Both Y–Cd bond lengths are 3.29 Å. Ir is bonded in a 6-coordinate geometry to nine Y atoms. Cd is bonded to nine Y and three equivalent Cd atoms to form a mixture of distorted face and corner-sharing CdY9Cd3 cuboctahedra. All Cd–Cd bond lengths are 3.11 Å.