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YIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Y is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Y–Ir bond lengths are 3.15 Å. Ir is bonded to six equivalent Y and six equivalent Ir atoms to form a mixture of face, edge, and corner-sharing IrY6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.68 Å.
IrY is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Y is bonded in a body-centered cubic geometry to eight equivalent Ir atoms. All Y–Ir bond lengths are 2.98 Å. Ir is bonded in a body-centered cubic geometry to eight equivalent Y atoms.
Y5Ir3 crystallizes in the tetragonal P4/ncc space group. The structure is three-dimensional. there are two inequivalent Y sites. In the first Y site, Y is bonded to five Ir atoms to form distorted YIr5 trigonal bipyramids that share corners with four equivalent YIr4 tetrahedra, corners with eleven equivalent YIr5 trigonal bipyramids, an edgeedge with one YIr4 tetrahedra, edges with six equivalent YIr5 trigonal bipyramids, and faces with two equivalent YIr5 trigonal bipyramids. There are a spread of Y–Ir bond distances ranging from 2.91–3.15 Å. In the second Y site, Y is bonded to four equivalent Ir atoms to form YIr4 tetrahedra that share corners with sixteen equivalent YIr5 trigonal bipyramids, edges with two equivalent YIr4 tetrahedra, and edges with four equivalent YIr5 trigonal bipyramids. All Y–Ir bond lengths are 2.86 Å. There are two inequivalent Ir sites. In the first Ir site, Ir is bonded in a 8-coordinate geometry to eight Y atoms. In the second Ir site, Ir is bonded in a 8-coordinate geometry to eight equivalent Y atoms.
Y3Ir is Cementite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Y sites. In the first Y site, Y is bonded in a distorted bent 150 degrees geometry to two equivalent Ir atoms. There are one shorter (2.77 Å) and one longer (2.87 Å) Y–Ir bond lengths. In the second Y site, Y is bonded in a 2-coordinate geometry to three equivalent Ir atoms. There are a spread of Y–Ir bond distances ranging from 2.87–3.25 Å. Ir is bonded in a 6-coordinate geometry to eight Y atoms.
Ir3Y crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are two inequivalent Y sites. In the first Y site, Y is bonded in a 12-coordinate geometry to twelve Ir atoms. There are a spread of Y–Ir bond distances ranging from 3.06–3.31 Å. In the second Y site, Y is bonded in a distorted hexagonal planar geometry to eighteen Ir atoms. There are six shorter (3.08 Å) and twelve longer (3.43 Å) Y–Ir bond lengths. There are three inequivalent Ir sites. In the first Ir site, Ir is bonded to five Y and seven Ir atoms to form a mixture of distorted corner, edge, and face-sharing IrY5Ir7 cuboctahedra. There are a spread of Ir–Ir bond distances ranging from 2.63–2.70 Å. In the second Ir site, Ir is bonded in a 12-coordinate geometry to three equivalent Y and six equivalent Ir atoms. In the third Ir site, Ir is bonded to six equivalent Y and six equivalent Ir atoms to form IrY6Ir6 cuboctahedra that share corners with twelve equivalent IrY5Ir7 cuboctahedra, edges with six equivalent IrY6Ir6 cuboctahedra, and faces with eighteen equivalent IrY5Ir7 cuboctahedra.