K2Ga3 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 14-coordinate geometry to one K(1), four equivalent K(2), one Ga(2), and eight equivalent Ga(1) atoms. In the second K site, K(2) is bonded in a 4-coordinate geometry to four equivalent K(1), four equivalent Ga(1), and four equivalent Ga(2) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent K(2), four equivalent K(1), two equivalent Ga(2), and three equivalent Ga(1) atoms. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to one K(1), four equivalent K(2), and four equivalent Ga(1) atoms.
K2Ga3 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 14-coordinate geometry to one K(1), four equivalent K(2), one Ga(2), and eight equivalent Ga(1) atoms. The K(1)-K(1) bond length is 3.21 Å. All K(1)-K(2) bond lengths are 3.68 Å. The K(1)-Ga(2) bond length is 3.70 Å. All K(1)-Ga(1) bond lengths are 3.67 Å. In the second K site, K(2) is bonded in a 4-coordinate geometry to four equivalent K(1), four equivalent Ga(1), and four equivalent Ga(2) atoms. All K(2)-Ga(1) bond lengths are 3.88 Å. All K(2)-Ga(2) bond lengths are 3.46 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent K(2), four equivalent K(1), two equivalent Ga(2), and three equivalent Ga(1) atoms. Both Ga(1)-Ga(2) bond lengths are 2.71 Å. There is one shorter (2.50 Å) and two longer (2.54 Å) Ga(1)-Ga(1) bond lengths. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to one K(1), four equivalent K(2), and four equivalent Ga(1) atoms.