YbLa3 is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. Yb(1) is bonded to twelve La(1,1) atoms to form YbLa12 cuboctahedra that share corners with six equivalent Yb(1)La12 cuboctahedra; corners with twelve La(1,1)La8Yb4 cuboctahedra; edges with eighteen La(1,1)La8Yb4 cuboctahedra; faces with eight equivalent Yb(1)La12 cuboctahedra; and faces with twelve La(1,1)La8Yb4 cuboctahedra. There are two inequivalent La sites. In the first La site, La(1) is bonded to four equivalent Yb(1) and eight La(1,1) atoms to form LaLa8Yb4 cuboctahedra that share corners with four equivalent Yb(1)La12 cuboctahedra; corners with fourteen equivalent La(1)La8Yb4 cuboctahedra; edges with six equivalent Yb(1)La12 cuboctahedra; edges with twelve La(1,1)La8Yb4 cuboctahedra; faces with four equivalent Yb(1)La12 cuboctahedra; and faces with sixteen La(1,1)La8Yb4 cuboctahedra. In the second La site, La(1) is bonded to four equivalent Yb(1) and eight equivalent La(1) atoms to form LaLa8Yb4 cuboctahedra that share corners with four equivalent Yb(1)La12 cuboctahedra; corners with fourteen La(1,1)La8Yb4 cuboctahedra; edges with six equivalent Yb(1)La12 cuboctahedra; edges with twelve equivalent La(1)La8Yb4 cuboctahedra; faces with four equivalent Yb(1)La12 cuboctahedra; and faces with sixteen La(1,1)La8Yb4 cuboctahedra.
YbLa3 is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. Yb(1) is bonded to twelve La(1,1) atoms to form YbLa12 cuboctahedra that share corners with six equivalent Yb(1)La12 cuboctahedra; corners with twelve La(1,1)La8Yb4 cuboctahedra; edges with eighteen La(1,1)La8Yb4 cuboctahedra; faces with eight equivalent Yb(1)La12 cuboctahedra; and faces with twelve La(1,1)La8Yb4 cuboctahedra. There are six shorter (3.74 Å) and six longer (3.80 Å) Yb(1)-La(1,1) bond lengths. There are two inequivalent La sites. In the first La site, La(1) is bonded to four equivalent Yb(1) and eight La(1,1) atoms to form LaLa8Yb4 cuboctahedra that share corners with four equivalent Yb(1)La12 cuboctahedra; corners with fourteen equivalent La(1)La8Yb4 cuboctahedra; edges with six equivalent Yb(1)La12 cuboctahedra; edges with twelve La(1,1)La8Yb4 cuboctahedra; faces with four equivalent Yb(1)La12 cuboctahedra; and faces with sixteen La(1,1)La8Yb4 cuboctahedra. There are a spread of La(1)-La(1,1) bond distances ranging from 3.72-3.83 Å. In the second La site, La(1) is bonded to four equivalent Yb(1) and eight equivalent La(1) atoms to form LaLa8Yb4 cuboctahedra that share corners with four equivalent Yb(1)La12 cuboctahedra; corners with fourteen La(1,1)La8Yb4 cuboctahedra; edges with six equivalent Yb(1)La12 cuboctahedra; edges with twelve equivalent La(1)La8Yb4 cuboctahedra; faces with four equivalent Yb(1)La12 cuboctahedra; and faces with sixteen La(1,1)La8Yb4 cuboctahedra.