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RhGa is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Rh is bonded in a body-centered cubic geometry to eight equivalent Ga atoms. All Rh–Ga bond lengths are 2.64 Å. Ga is bonded in a body-centered cubic geometry to eight equivalent Rh atoms.
Sr(RhGa)2 is alpha Pu-derived structured and crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. Sr is bonded in a 6-coordinate geometry to eight equivalent Rh and ten equivalent Ga atoms. There are four shorter (3.31 Å) and four longer (3.53 Å) Sr–Rh bond lengths. There are a spread of Sr–Ga bond distances ranging from 3.38–3.77 Å. Rh is bonded in a 4-coordinate geometry to four equivalent Sr and four equivalent Ga atoms. There are two shorter (2.44 Å) and two longer (2.49 Å) Rh–Ga bond lengths. Ga is bonded in a 4-coordinate geometry to five equivalent Sr and four equivalent Rh atoms.
Ce3Rh2Ga2 crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional. there are two inequivalent Ce sites. In the first Ce site, Ce is bonded in a 9-coordinate geometry to four equivalent Rh and five Ga atoms. There are two shorter (3.08 Å) and two longer (3.13 Å) Ce–Rh bond lengths. There are a spread of Ce–Ga bond distances ranging from 3.03–3.35 Å. In the second Ce site, Ce is bonded in a 7-coordinate geometry to four equivalent Rh and five Ga atoms. There are a spread of Ce–Rh bond distances ranging from 2.79–3.22 Å. There are a spread of Ce–Ga bond distances ranging from 3.14–3.32 Å. Rh is bonded in a 9-coordinate geometry to six Ce and three Ga atoms. There are a spread of Rh–Ga bond distances ranging from 2.57–2.69 Å. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a 9-coordinate geometry to seven Ce and two equivalent Rh atoms. In the second Ga site, Ga is bonded in a 12-coordinate geometry to eight Ce and four equivalent Rh atoms.
La3(RhGa)2 crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional. there are two inequivalent La sites. In the first La site, La is bonded in a 9-coordinate geometry to four equivalent Rh and five Ga atoms. There are two shorter (3.21 Å) and two longer (3.24 Å) La–Rh bond lengths. There are a spread of La–Ga bond distances ranging from 3.13–3.42 Å. In the second La site, La is bonded in a 7-coordinate geometry to four equivalent Rh and five Ga atoms. There are a spread of La–Rh bond distances ranging from 2.91–3.30 Å. There are a spread of La–Ga bond distances ranging from 3.25–3.46 Å. Rh is bonded in a 9-coordinate geometry to six La and three Ga atoms. There are a spread of Rh–Ga bond distances ranging from 2.59–2.70 Å. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a 9-coordinate geometry to seven La and two equivalent Rh atoms. In the second Ga site, Ga is bonded to eight La and four equivalent Rh atoms to form a mixture of distorted face, edge, and corner-sharing GaLa8Rh4 cuboctahedra.