La2NiGa12 crystallizes in the tetragonal P4/nbm space group. La(1) is bonded in a 14-coordinate geometry to two equivalent Ga(4), four equivalent Ga(1), four equivalent Ga(2), and four equivalent Ga(3) atoms. Ni(1) is bonded in a body-centered cubic geometry to eight equivalent Ga(2) atoms. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to four equivalent La(1), one Ga(3), and four equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded in a 7-coordinate geometry to two equivalent La(1), two equivalent Ni(1), one Ga(2), and two equivalent Ga(1) atoms. In the third Ga site, Ga(3) is bonded in a 9-coordinate geometry to four equivalent La(1), one Ga(1), and four equivalent Ga(4) atoms. In the fourth Ga site, Ga(4) is bonded in a 4-coordinate geometry to one La(1), one Ga(4), and two equivalent Ga(3) atoms.
La2NiGa12 crystallizes in the tetragonal P4/nbm space group. La(1) is bonded in a 14-coordinate geometry to two equivalent Ga(4), four equivalent Ga(1), four equivalent Ga(2), and four equivalent Ga(3) atoms. Both La(1)-Ga(4) bond lengths are 3.30 Å. All La(1)-Ga(1) bond lengths are 3.22 Å. There are two shorter (3.34 Å) and two longer (3.35 Å) La(1)-Ga(2) bond lengths. All La(1)-Ga(3) bond lengths are 3.41 Å. Ni(1) is bonded in a body-centered cubic geometry to eight equivalent Ga(2) atoms. All Ni(1)-Ga(2) bond lengths are 2.53 Å. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to four equivalent La(1), one Ga(3), and four equivalent Ga(2) atoms. The Ga(1)-Ga(3) bond length is 2.50 Å. All Ga(1)-Ga(2) bond lengths are 2.66 Å. In the second Ga site, Ga(2) is bonded in a 7-coordinate geometry to two equivalent La(1), two equivalent Ni(1), one Ga(2), and two equivalent Ga(1) atoms. The Ga(2)-Ga(2) bond length is 2.62 Å. In the third Ga site, Ga(3) is bonded in a 9-coordinate geometry to four equivalent La(1), one Ga(1), and four equivalent Ga(4) atoms. All Ga(3)-Ga(4) bond lengths are 2.64 Å. In the fourth Ga site, Ga(4) is bonded in a 4-coordinate geometry to one La(1), one Ga(4), and two equivalent Ga(3) atoms. The Ga(4)-Ga(4) bond length is 2.57 Å.