K3Nd is Uranium Silicide-like 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(1), four equivalent K(2), and four equivalent Nd(1) atoms to form KK8Nd4 cuboctahedra that share corners with twelve equivalent K(1)K8Nd4 cuboctahedra, edges with eight equivalent K(1)K8Nd4 cuboctahedra, edges with eight equivalent Nd(1)K12 cuboctahedra, faces with four equivalent Nd(1)K12 cuboctahedra, and faces with ten equivalent K(1)K8Nd4 cuboctahedra. In the second K site, K(2) is bonded in a distorted square co-planar geometry to eight equivalent K(1) and four equivalent Nd(1) atoms. Nd(1) is bonded to four equivalent K(2) and eight equivalent K(1) atoms to form NdK12 cuboctahedra that share corners with four equivalent Nd(1)K12 cuboctahedra, edges with eight equivalent Nd(1)K12 cuboctahedra, edges with sixteen equivalent K(1)K8Nd4 cuboctahedra, faces with four equivalent Nd(1)K12 cuboctahedra, and faces with eight equivalent K(1)K8Nd4 cuboctahedra.
K3Nd is Uranium Silicide-like 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(1), four equivalent K(2), and four equivalent Nd(1) atoms to form KK8Nd4 cuboctahedra that share corners with twelve equivalent K(1)K8Nd4 cuboctahedra, edges with eight equivalent K(1)K8Nd4 cuboctahedra, edges with eight equivalent Nd(1)K12 cuboctahedra, faces with four equivalent Nd(1)K12 cuboctahedra, and faces with ten equivalent K(1)K8Nd4 cuboctahedra. All K(1)-K(1) bond lengths are 4.11 Å. All K(1)-K(2) bond lengths are 4.44 Å. All K(1)-Nd(1) bond lengths are 4.44 Å. In the second K site, K(2) is bonded in a distorted square co-planar geometry to eight equivalent K(1) and four equivalent Nd(1) atoms. All K(2)-Nd(1) bond lengths are 4.11 Å. Nd(1) is bonded to four equivalent K(2) and eight equivalent K(1) atoms to form NdK12 cuboctahedra that share corners with four equivalent Nd(1)K12 cuboctahedra, edges with eight equivalent Nd(1)K12 cuboctahedra, edges with sixteen equivalent K(1)K8Nd4 cuboctahedra, faces with four equivalent Nd(1)K12 cuboctahedra, and faces with eight equivalent K(1)K8Nd4 cuboctahedra.