Materials Data on BaPm by Materials Project
BaPm crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Ba is bonded to six equivalent Ba and six equivalent Pm atoms to form BaBa6Pm6 cuboctahedra that share corners with eighteen equivalent BaBa6Pm6 cuboctahedra, edges with six equivalent BaBa6Pm6 cuboctahedra, edges with twelve equivalent PmBa6Pm6 cuboctahedra, faces with eight equivalent BaBa6Pm6 cuboctahedra, and faces with twelve equivalent PmBa6Pm6 cuboctahedra. All Ba–Ba bond lengths are 3.97 Å. All Ba–Pm bond lengths are 3.99 Å. Pm is bonded to six equivalent Ba and six equivalent Pm atoms to form PmBa6Pm6 cuboctahedra that share corners with eighteen equivalent PmBa6Pm6 cuboctahedra, edges with six equivalent PmBa6Pm6 cuboctahedra, edges with twelve equivalent BaBa6Pm6 cuboctahedra, faces with eight equivalent PmBa6Pm6 cuboctahedra, and faces with twelve equivalent BaBa6Pm6 cuboctahedra. All Pm–Pm bond lengths are 3.97 Å.