Ni4GaGe3 crystallizes in the monoclinic Cm space group. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 10-coordinate geometry to one Ni(2), one Ni(3), two equivalent Ni(4), two equivalent Ga(1), one Ge(2), one Ge(3), and two equivalent Ge(1) atoms. In the second Ni site, Ni(2) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(3), one Ga(1), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the third Ni site, Ni(3) is bonded in a 6-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(2), two equivalent Ga(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the fourth Ni site, Ni(4) is bonded in a 10-coordinate geometry to one Ni(2), one Ni(3), two equivalent Ni(1), two equivalent Ga(1), one Ge(2), one Ge(3), and two equivalent Ge(1) atoms. Ga(1) is bonded in a 10-coordinate geometry to one Ni(2), two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), one Ge(2), and two equivalent Ge(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 6-coordinate geometry to two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(4), and two equivalent Ga(1) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(2), two equivalent Ni(3), and one Ga(1) atom. In the third Ge site, Ge(3) is bonded in a 6-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(2), and two equivalent Ni(3) atoms.
Ni4GaGe3 crystallizes in the monoclinic Cm space group. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 10-coordinate geometry to one Ni(2), one Ni(3), two equivalent Ni(4), two equivalent Ga(1), one Ge(2), one Ge(3), and two equivalent Ge(1) atoms. The Ni(1)-Ni(2) bond length is 2.59 Å. The Ni(1)-Ni(3) bond length is 2.64 Å. There is one shorter (2.44 Å) and one longer (2.45 Å) Ni(1)-Ni(4) bond length. Both Ni(1)-Ga(1) bond lengths are 2.43 Å. The Ni(1)-Ge(2) bond length is 2.46 Å. The Ni(1)-Ge(3) bond length is 2.47 Å. Both Ni(1)-Ge(1) bond lengths are 2.41 Å. In the second Ni site, Ni(2) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(3), one Ga(1), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. The Ni(2)-Ni(4) bond length is 2.63 Å. Both Ni(2)-Ni(3) bond lengths are 2.62 Å. The Ni(2)-Ga(1) bond length is 2.93 Å. Both Ni(2)-Ge(1) bond lengths are 2.46 Å. There is one shorter (2.45 Å) and one longer (2.46 Å) Ni(2)-Ge(2) bond length. Both Ni(2)-Ge(3) bond lengths are 2.50 Å. In the third Ni site, Ni(3) is bonded in a 6-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(2), two equivalent Ga(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. The Ni(3)-Ni(4) bond length is 2.67 Å. Both Ni(3)-Ga(1) bond lengths are 2.45 Å. Both Ni(3)-Ge(2) bond lengths are 2.48 Å. There is one shorter (2.45 Å) and one longer (2.46 Å) Ni(3)-Ge(3) bond length. In the fourth Ni site, Ni(4) is bonded in a 10-coordinate geometry to one Ni(2), one Ni(3), two equivalent Ni(1), two equivalent Ga(1), one Ge(2), one Ge(3), and two equivalent Ge(1) atoms. Both Ni(4)-Ga(1) bond lengths are 2.40 Å. The Ni(4)-Ge(2) bond length is 2.42 Å. The Ni(4)-Ge(3) bond length is 2.43 Å. Both Ni(4)-Ge(1) bond lengths are 2.37 Å. Ga(1) is bonded in a 10-coordinate geometry to one Ni(2), two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), one Ge(2), and two equivalent Ge(1) atoms. The Ga(1)-Ge(2) bond length is 2.97 Å. There is one shorter (2.86 Å) and one longer (2.97 Å) Ga(1)-Ge(1) bond length. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 6-coordinate geometry to two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(4), and two equivalent Ga(1) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(2), two equivalent Ni(3), and one Ga(1) atom. In the third Ge site, Ge(3) is bonded in a 6-coordinate geometry to one Ni(1), one Ni(4), two equivalent Ni(2), and two equivalent Ni(3) atoms.