K3Rh is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to four equivalent K(2) and four equivalent Rh(1) atoms to form distorted KK4Rh4 tetrahedra that share corners with eight equivalent K(2)K8Rh4 cuboctahedra, corners with eight equivalent K(1)K4Rh4 tetrahedra, edges with four equivalent K(2)K8Rh4 cuboctahedra, edges with twelve equivalent K(1)K4Rh4 tetrahedra, and faces with six equivalent K(1)K4Rh4 tetrahedra. In the second K site, K(2) is bonded to eight equivalent K(1) and four equivalent Rh(1) atoms to form KK8Rh4 cuboctahedra that share corners with four equivalent K(2)K8Rh4 cuboctahedra, corners with sixteen equivalent K(1)K4Rh4 tetrahedra, edges with eight equivalent K(2)K8Rh4 cuboctahedra, edges with eight equivalent K(1)K4Rh4 tetrahedra, and faces with four equivalent K(2)K8Rh4 cuboctahedra. Rh(1) is bonded in a distorted body-centered cubic geometry to four equivalent K(2) and eight equivalent K(1) atoms.
K3Rh is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to four equivalent K(2) and four equivalent Rh(1) atoms to form distorted KK4Rh4 tetrahedra that share corners with eight equivalent K(2)K8Rh4 cuboctahedra, corners with eight equivalent K(1)K4Rh4 tetrahedra, edges with four equivalent K(2)K8Rh4 cuboctahedra, edges with twelve equivalent K(1)K4Rh4 tetrahedra, and faces with six equivalent K(1)K4Rh4 tetrahedra. All K(1)-K(2) bond lengths are 3.57 Å. All K(1)-Rh(1) bond lengths are 3.57 Å. In the second K site, K(2) is bonded to eight equivalent K(1) and four equivalent Rh(1) atoms to form KK8Rh4 cuboctahedra that share corners with four equivalent K(2)K8Rh4 cuboctahedra, corners with sixteen equivalent K(1)K4Rh4 tetrahedra, edges with eight equivalent K(2)K8Rh4 cuboctahedra, edges with eight equivalent K(1)K4Rh4 tetrahedra, and faces with four equivalent K(2)K8Rh4 cuboctahedra. All K(2)-Rh(1) bond lengths are 4.04 Å. Rh(1) is bonded in a distorted body-centered cubic geometry to four equivalent K(2) and eight equivalent K(1) atoms.