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IrSc is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Sc is bonded in a body-centered cubic geometry to eight equivalent Ir atoms. All Sc–Ir bond lengths are 2.80 Å. Ir is bonded in a body-centered cubic geometry to eight equivalent Sc atoms.
Sc11Ir4 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional and consists of four Sc6Ir clusters and one Sc16Ir7 framework. In each Sc6Ir cluster, Sc is bonded in a single-bond geometry to one Ir atom. The Sc–Ir bond length is 2.66 Å. Ir is bonded in an octahedral geometry to six equivalent Sc atoms. In the Sc16Ir7 framework, there are two inequivalent Sc sites. In the first Sc site, Sc is bonded to four Ir atoms to form a mixture of distorted corner and edge-sharing ScIr4 tetrahedra. There are one shorter (2.72 Å) and three longer (2.96 Å) Sc–Ir bond lengths. In the second Sc site, Sc is bonded in a trigonal planar geometry to three equivalent Ir atoms. All Sc–Ir bond lengths are 2.74 Å. There are two inequivalent Ir sites. In the first Ir site, Ir is bonded in a body-centered cubic geometry to eight equivalent Sc atoms. In the second Ir site, Ir is bonded in a 12-coordinate geometry to eight Sc atoms.
ScIr3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Sc is bonded to twelve equivalent Ir atoms to form a mixture of face and corner-sharing ScIr12 cuboctahedra. All Sc–Ir bond lengths are 2.79 Å. Ir is bonded in a distorted square co-planar geometry to four equivalent Sc atoms.
ScIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Sc is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Sc–Ir bond lengths are 3.07 Å. Ir is bonded to six equivalent Sc and six equivalent Ir atoms to form a mixture of edge, corner, and face-sharing IrSc6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.62 Å.
Sc2Ir crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. there are two inequivalent Sc sites. In the first Sc site, Sc is bonded in a 6-coordinate geometry to six equivalent Ir atoms. All Sc–Ir bond lengths are 2.73 Å. In the second Sc site, Sc is bonded in a 2-coordinate geometry to four equivalent Ir atoms. There are two shorter (2.80 Å) and two longer (3.15 Å) Sc–Ir bond lengths. Ir is bonded in a 9-coordinate geometry to nine Sc atoms.
Sc4Ir is Iron carbide-like structured and crystallizes in the cubic Fd-3m space group. The structure is zero-dimensional and consists of eight Sc4Ir clusters. Sc is bonded in a single-bond geometry to one Ir atom. The Sc–Ir bond length is 2.46 Å. Ir is bonded in a tetrahedral geometry to four equivalent Sc atoms.