LaAlGe crystallizes in the tetragonal I4_1md space group. There are two inequivalent La sites. In the first La site, La(1) is bonded to six Al(1,1) and six Ge(1,1) atoms to form a mixture of face and edge-sharing LaAl6Ge6 cuboctahedra. In the second La site, La(1) is bonded to six equivalent Al(1) and six equivalent Ge(1) atoms to form a mixture of face and edge-sharing LaAl6Ge6 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent La(1) and three equivalent Ge(1) atoms. In the second Al site, Al(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Ge(1,1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Al(1,1) atoms. In the second Ge site, Ge(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Al(1,1) atoms.
LaAlGe crystallizes in the tetragonal I4_1md space group. There are two inequivalent La sites. In the first La site, La(1) is bonded to six Al(1,1) and six Ge(1,1) atoms to form a mixture of face and edge-sharing LaAl6Ge6 cuboctahedra. There are two shorter (3.29 Å) and four longer (3.33 Å) La(1)-Al(1,1) bond lengths. There are two shorter (3.28 Å) and four longer (3.33 Å) La(1)-Ge(1,1) bond lengths. In the second La site, La(1) is bonded to six equivalent Al(1) and six equivalent Ge(1) atoms to form a mixture of face and edge-sharing LaAl6Ge6 cuboctahedra. There are two shorter (3.29 Å) and four longer (3.33 Å) La(1)-Al(1) bond lengths. There are two shorter (3.28 Å) and four longer (3.33 Å) La(1)-Ge(1) bond lengths. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent La(1) and three equivalent Ge(1) atoms. There is one shorter (2.46 Å) and two longer (2.51 Å) Al(1)-Ge(1) bond lengths. In the second Al site, Al(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Ge(1,1) atoms. Both Al(1)-La(1) bond lengths are 3.29 Å. There is one shorter (2.46 Å) and two longer (2.51 Å) Al(1)-Ge(1,1) bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Al(1,1) atoms. In the second Ge site, Ge(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Al(1,1) atoms. All Ge(1)-La(1) bond lengths are 3.33 Å. The Ge(1)-Al(1) bond length is 2.46 Å.