Eu2ZnGe3 crystallizes in the hexagonal P6_3/mmc space group. Eu(1) is bonded in a 9-coordinate geometry to three equivalent Zn(1), three equivalent Ge(1), and three equivalent Ge(2) atoms. Zn(1) is bonded in a distorted trigonal planar geometry to six equivalent Eu(1) and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent Eu(1) and three equivalent Ge(2) atoms. In the second Ge site, Ge(1) is bonded in a distorted trigonal planar geometry to six equivalent Eu(1) and three equivalent Zn(1) atoms.
Eu2ZnGe3 crystallizes in the hexagonal P6_3/mmc space group. Eu(1) is bonded in a 9-coordinate geometry to three equivalent Zn(1), three equivalent Ge(1), and three equivalent Ge(2) atoms. All Eu(1)-Zn(1) bond lengths are 3.27 Å. All Eu(1)-Ge(1) bond lengths are 3.27 Å. All Eu(1)-Ge(2) bond lengths are 3.08 Å. Zn(1) is bonded in a distorted trigonal planar geometry to six equivalent Eu(1) and three equivalent Ge(1) atoms. All Zn(1)-Ge(1) bond lengths are 2.45 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent Eu(1) and three equivalent Ge(2) atoms. All Ge(2)-Ge(2) bond lengths are 2.60 Å. In the second Ge site, Ge(1) is bonded in a distorted trigonal planar geometry to six equivalent Eu(1) and three equivalent Zn(1) atoms.