Na3La is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to eight Na(1,1) and four equivalent La(1) atoms to form distorted NaNa8La4 cuboctahedra that share corners with four equivalent La(1)Na12 cuboctahedra; corners with fourteen Na(1,1)Na8La4 cuboctahedra; edges with six equivalent La(1)Na12 cuboctahedra; edges with twelve Na(1,1)Na8La4 cuboctahedra; faces with four equivalent La(1)Na12 cuboctahedra; and faces with sixteen Na(1,1)Na8La4 cuboctahedra. In the second Na site, Na(1) is bonded to eight equivalent Na(1) and four equivalent La(1) atoms to form distorted NaNa8La4 cuboctahedra that share corners with four equivalent La(1)Na12 cuboctahedra; corners with fourteen Na(1,1)Na8La4 cuboctahedra; edges with six equivalent La(1)Na12 cuboctahedra; edges with twelve equivalent Na(1)Na8La4 cuboctahedra; faces with four equivalent La(1)Na12 cuboctahedra; and faces with sixteen Na(1,1)Na8La4 cuboctahedra. La(1) is bonded to twelve Na(1,1) atoms to form LaNa12 cuboctahedra that share corners with six equivalent La(1)Na12 cuboctahedra; corners with twelve equivalent Na(1)Na8La4 cuboctahedra; edges with eighteen Na(1,1)Na8La4 cuboctahedra; faces with eight equivalent La(1)Na12 cuboctahedra; and faces with twelve Na(1,1)Na8La4 cuboctahedra.
Na3La is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to eight Na(1,1) and four equivalent La(1) atoms to form distorted NaNa8La4 cuboctahedra that share corners with four equivalent La(1)Na12 cuboctahedra; corners with fourteen Na(1,1)Na8La4 cuboctahedra; edges with six equivalent La(1)Na12 cuboctahedra; edges with twelve Na(1,1)Na8La4 cuboctahedra; faces with four equivalent La(1)Na12 cuboctahedra; and faces with sixteen Na(1,1)Na8La4 cuboctahedra. There are six shorter (3.62 Å) and two longer (3.92 Å) Na(1)-Na(1,1) bond lengths. There are two shorter (3.72 Å) and two longer (3.77 Å) Na(1)-La(1) bond lengths. In the second Na site, Na(1) is bonded to eight equivalent Na(1) and four equivalent La(1) atoms to form distorted NaNa8La4 cuboctahedra that share corners with four equivalent La(1)Na12 cuboctahedra; corners with fourteen Na(1,1)Na8La4 cuboctahedra; edges with six equivalent La(1)Na12 cuboctahedra; edges with twelve equivalent Na(1)Na8La4 cuboctahedra; faces with four equivalent La(1)Na12 cuboctahedra; and faces with sixteen Na(1,1)Na8La4 cuboctahedra. There are two shorter (3.72 Å) and two longer (3.77 Å) Na(1)-La(1) bond lengths. La(1) is bonded to twelve Na(1,1) atoms to form LaNa12 cuboctahedra that share corners with six equivalent La(1)Na12 cuboctahedra; corners with twelve equivalent Na(1)Na8La4 cuboctahedra; edges with eighteen Na(1,1)Na8La4 cuboctahedra; faces with eight equivalent La(1)Na12 cuboctahedra; and faces with twelve Na(1,1)Na8La4 cuboctahedra.