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SrRh2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Sr is bonded in a 12-coordinate geometry to twelve equivalent Rh atoms. All Sr–Rh bond lengths are 3.23 Å. Rh is bonded to six equivalent Sr and six equivalent Rh atoms to form a mixture of corner, edge, and face-sharing RhSr6Rh6 cuboctahedra. All Rh–Rh bond lengths are 2.75 Å.
Sr2Rh is Fluorite structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Sr is bonded to four equivalent Rh atoms to form a mixture of edge and corner-sharing SrRh4 tetrahedra. All Sr–Rh bond lengths are 3.19 Å. Rh is bonded in a body-centered cubic geometry to eight equivalent Sr atoms.
Sr8Rh5 crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Sr is bonded in a 5-coordinate geometry to five Rh atoms. There are a spread of Sr–Rh bond distances ranging from 3.15–3.18 Å. There are three inequivalent Rh sites. In the first Rh site, Rh is bonded in a body-centered cubic geometry to eight equivalent Sr atoms. In the second Rh site, Rh is bonded in a body-centered cubic geometry to eight equivalent Sr atoms. In the third Rh site, Rh is bonded in a body-centered cubic geometry to eight equivalent Sr atoms.