Co4Ga3Ge crystallizes in the trigonal R3 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 7-coordinate geometry to six equivalent Ga(1) and one Ge(1) atom. In the second Co site, Co(2) is bonded in a 7-coordinate geometry to five equivalent Ga(1) and two equivalent Ge(1) atoms. Ga(1) is bonded in a 7-coordinate geometry to two equivalent Co(1), five equivalent Co(2), and two equivalent Ge(1) atoms. Ge(1) is bonded in a 13-coordinate geometry to one Co(1), six equivalent Co(2), and six equivalent Ga(1) atoms.
Co4Ga3Ge crystallizes in the trigonal R3 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 7-coordinate geometry to six equivalent Ga(1) and one Ge(1) atom. There are three shorter (2.45 Å) and three longer (2.58 Å) Co(1)-Ga(1) bond lengths. The Co(1)-Ge(1) bond length is 2.35 Å. In the second Co site, Co(2) is bonded in a 7-coordinate geometry to five equivalent Ga(1) and two equivalent Ge(1) atoms. There are a spread of Co(2)-Ga(1) bond distances ranging from 2.41-2.60 Å. There is one shorter (2.40 Å) and one longer (2.60 Å) Co(2)-Ge(1) bond length. Ga(1) is bonded in a 7-coordinate geometry to two equivalent Co(1), five equivalent Co(2), and two equivalent Ge(1) atoms. Both Ga(1)-Ge(1) bond lengths are 2.90 Å. Ge(1) is bonded in a 13-coordinate geometry to one Co(1), six equivalent Co(2), and six equivalent Ga(1) atoms.