La3In4Ge crystallizes in the tetragonal I4/mcm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 10-coordinate geometry to eight equivalent In(1) and two equivalent Ge(1) atoms. In the second La site, La(2) is bonded in a 8-coordinate geometry to six equivalent In(1) and two equivalent Ge(1) atoms. In(1) is bonded in a 8-coordinate geometry to two equivalent La(1), three equivalent La(2), and three equivalent In(1) atoms. Ge(1) is bonded to two equivalent La(1) and four equivalent La(2) atoms to form corner-sharing GeLa6 octahedra. The corner-sharing octahedral tilt angles range from 0-37°.
La3In4Ge crystallizes in the tetragonal I4/mcm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 10-coordinate geometry to eight equivalent In(1) and two equivalent Ge(1) atoms. All La(1)-In(1) bond lengths are 3.43 Å. Both La(1)-Ge(1) bond lengths are 3.04 Å. In the second La site, La(2) is bonded in a 8-coordinate geometry to six equivalent In(1) and two equivalent Ge(1) atoms. There are two shorter (3.26 Å) and four longer (3.50 Å) La(2)-In(1) bond lengths. Both La(2)-Ge(1) bond lengths are 3.24 Å. In(1) is bonded in a 8-coordinate geometry to two equivalent La(1), three equivalent La(2), and three equivalent In(1) atoms. There are two shorter (2.93 Å) and one longer (3.08 Å) In(1)-In(1) bond length. Ge(1) is bonded to two equivalent La(1) and four equivalent La(2) atoms to form corner-sharing GeLa6 octahedra. The corner-sharing octahedral tilt angles range from 0-37°.