Materials Data on Ac3Tb by Materials Project
Ac3Tb is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ac is bonded to eight equivalent Ac and four equivalent Tb atoms to form AcAc8Tb4 cuboctahedra that share corners with four equivalent TbAc12 cuboctahedra, corners with fourteen equivalent AcAc8Tb4 cuboctahedra, edges with six equivalent TbAc12 cuboctahedra, edges with twelve equivalent AcAc8Tb4 cuboctahedra, faces with four equivalent TbAc12 cuboctahedra, and faces with sixteen equivalent AcAc8Tb4 cuboctahedra. There are a spread of Ac–Ac bond distances ranging from 3.84–3.97 Å. There are two shorter (3.88 Å) and two longer (3.91 Å) Ac–Tb bond lengths. Tb is bonded to twelve equivalent Ac atoms to form TbAc12 cuboctahedra that share corners with six equivalent TbAc12 cuboctahedra, corners with twelve equivalent AcAc8Tb4 cuboctahedra, edges with eighteen equivalent AcAc8Tb4 cuboctahedra, faces with eight equivalent TbAc12 cuboctahedra, and faces with twelve equivalent AcAc8Tb4 cuboctahedra.