Materials Data on LaPm3 by Materials Project
Pm3La is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Pm is bonded to eight equivalent Pm and four equivalent La atoms to form PmLa4Pm8 cuboctahedra that share corners with four equivalent LaPm12 cuboctahedra, corners with fourteen equivalent PmLa4Pm8 cuboctahedra, edges with six equivalent LaPm12 cuboctahedra, edges with twelve equivalent PmLa4Pm8 cuboctahedra, faces with four equivalent LaPm12 cuboctahedra, and faces with sixteen equivalent PmLa4Pm8 cuboctahedra. There are a spread of Pm–Pm bond distances ranging from 3.67–3.73 Å. There are two shorter (3.68 Å) and two longer (3.71 Å) Pm–La bond lengths. La is bonded to twelve equivalent Pm atoms to form LaPm12 cuboctahedra that share corners with six equivalent LaPm12 cuboctahedra, corners with twelve equivalent PmLa4Pm8 cuboctahedra, edges with eighteen equivalent PmLa4Pm8 cuboctahedra, faces with eight equivalent LaPm12 cuboctahedra, and faces with twelve equivalent PmLa4Pm8 cuboctahedra.