RhSbAs crystallizes in the monoclinic P2_1/c space group. Rh(1) is bonded to three equivalent Sb(1) and three equivalent As(1) atoms to form distorted RhSb3As3 octahedra that share corners with eight equivalent Rh(1)Sb3As3 octahedra, corners with three equivalent Sb(1)AsRh3 tetrahedra, corners with three equivalent As(1)SbRh3 tetrahedra, and edges with two equivalent Rh(1)Sb3As3 octahedra. The corner-sharing octahedral tilt angles range from 51-60°. Sb(1) is bonded to three equivalent Rh(1) and one As(1) atom to form SbAsRh3 tetrahedra that share corners with three equivalent Rh(1)Sb3As3 octahedra, corners with four equivalent Sb(1)AsRh3 tetrahedra, corners with nine equivalent As(1)SbRh3 tetrahedra, and  an edgeedge with one Sb(1)AsRh3 tetrahedra. The corner-sharing octahedral tilt angles range from 70-74°. As(1) is bonded to three equivalent Rh(1) and one Sb(1) atom to form distorted AsSbRh3 tetrahedra that share corners with three equivalent Rh(1)Sb3As3 octahedra, corners with four equivalent As(1)SbRh3 tetrahedra, corners with nine equivalent Sb(1)AsRh3 tetrahedra, and  an edgeedge with one As(1)SbRh3 tetrahedra. The corner-sharing octahedral tilt angles are 75°.
RhSbAs crystallizes in the monoclinic P2_1/c space group. Rh(1) is bonded to three equivalent Sb(1) and three equivalent As(1) atoms to form distorted RhSb3As3 octahedra that share corners with eight equivalent Rh(1)Sb3As3 octahedra, corners with three equivalent Sb(1)AsRh3 tetrahedra, corners with three equivalent As(1)SbRh3 tetrahedra, and edges with two equivalent Rh(1)Sb3As3 octahedra. The corner-sharing octahedral tilt angles range from 51-60°. There is one shorter (2.65 Å) and two longer (2.67 Å) Rh(1)-Sb(1) bond lengths. There are two shorter (2.45 Å) and one longer (2.47 Å) Rh(1)-As(1) bond length. Sb(1) is bonded to three equivalent Rh(1) and one As(1) atom to form SbAsRh3 tetrahedra that share corners with three equivalent Rh(1)Sb3As3 octahedra, corners with four equivalent Sb(1)AsRh3 tetrahedra, corners with nine equivalent As(1)SbRh3 tetrahedra, and  an edgeedge with one Sb(1)AsRh3 tetrahedra. The corner-sharing octahedral tilt angles range from 70-74°. The Sb(1)-As(1) bond length is 2.67 Å. As(1) is bonded to three equivalent Rh(1) and one Sb(1) atom to form distorted AsSbRh3 tetrahedra that share corners with three equivalent Rh(1)Sb3As3 octahedra, corners with four equivalent As(1)SbRh3 tetrahedra, corners with nine equivalent Sb(1)AsRh3 tetrahedra, and  an edgeedge with one As(1)SbRh3 tetrahedra. The corner-sharing octahedral tilt angles are 75°.