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YbIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Yb is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Yb–Ir bond lengths are 3.12 Å. Ir is bonded to six equivalent Yb and six equivalent Ir atoms to form a mixture of edge, face, and corner-sharing IrYb6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.66 Å.
YbIr is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Yb is bonded in a body-centered cubic geometry to eight equivalent Ir atoms. All Yb–Ir bond lengths are 2.91 Å. Ir is bonded in a body-centered cubic geometry to eight equivalent Yb atoms.
Yb5Ir3 crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. there are two inequivalent Yb sites. In the first Yb site, Yb is bonded in a 6-coordinate geometry to six equivalent Ir atoms. All Yb–Ir bond lengths are 2.96 Å. In the second Yb site, Yb is bonded in a 5-coordinate geometry to five equivalent Ir atoms. There are a spread of Yb–Ir bond distances ranging from 2.83–3.17 Å. Ir is bonded in a 9-coordinate geometry to nine Yb atoms.