K2Li3GaO4 is alpha Pu-derived structured and crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), and three equivalent O(3) atoms. In the second K site, K(2) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted LiO4 trigonal pyramids that share corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Ga(1)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Ga(1)O4 tetrahedra. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the third Li site, Li(3) is bonded to one O(1), one O(2), and two equivalent O(4) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Ga(1)O4 tetrahedra, corners with two equivalent Li(1)O4 trigonal pyramids,  an edgeedge with one Li(3)O4 tetrahedra,  an edgeedge with one Ga(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 trigonal pyramid. Ga(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GaO4 tetrahedra that share corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Li(1)O4 trigonal pyramids,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Li(1)O4 trigonal pyramid. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to two equivalent K(2), three equivalent K(1), one Li(1), one Li(2), and one Ga(1) atom. In the second O site, O(4) is bonded in a 5-coordinate geometry to one K(1), one K(2), one Li(1), one Li(2), two equivalent Li(3), and one Ga(1) atom. In the third O site, O(1) is bonded in a 7-coordinate geometry to one K(1), two equivalent K(2), one Li(1), one Li(2), one Li(3), and one Ga(1) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), one Li(1), one Li(2), one Li(3), and one Ga(1) atom.
K2Li3GaO4 is alpha Pu-derived structured and crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), and three equivalent O(3) atoms. The K(1)-O(1) bond length is 2.82 Å. The K(1)-O(2) bond length is 2.84 Å. The K(1)-O(4) bond length is 2.77 Å. There are a spread of K(1)-O(3) bond distances ranging from 2.87-3.00 Å. In the second K site, K(2) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. The K(2)-O(4) bond length is 2.89 Å. There is one shorter (2.73 Å) and one longer (2.97 Å) K(2)-O(1) bond length. There is one shorter (2.87 Å) and one longer (2.93 Å) K(2)-O(2) bond length. There is one shorter (3.02 Å) and one longer (3.19 Å) K(2)-O(3) bond length. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted LiO4 trigonal pyramids that share corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Ga(1)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Ga(1)O4 tetrahedra. The Li(1)-O(1) bond length is 1.99 Å. The Li(1)-O(2) bond length is 1.98 Å. The Li(1)-O(3) bond length is 2.06 Å. The Li(1)-O(4) bond length is 2.11 Å. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. The Li(2)-O(1) bond length is 2.29 Å. The Li(2)-O(2) bond length is 1.98 Å. The Li(2)-O(3) bond length is 1.99 Å. The Li(2)-O(4) bond length is 2.00 Å. In the third Li site, Li(3) is bonded to one O(1), one O(2), and two equivalent O(4) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Ga(1)O4 tetrahedra, corners with two equivalent Li(1)O4 trigonal pyramids,  an edgeedge with one Li(3)O4 tetrahedra,  an edgeedge with one Ga(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 trigonal pyramid. The Li(3)-O(1) bond length is 1.94 Å. The Li(3)-O(2) bond length is 2.08 Å. There is one shorter (1.98 Å) and one longer (2.07 Å) Li(3)-O(4) bond length. Ga(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GaO4 tetrahedra that share corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Li(1)O4 trigonal pyramids,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Li(1)O4 trigonal pyramid. The Ga(1)-O(1) bond length is 1.88 Å. The Ga(1)-O(2) bond length is 1.89 Å. The Ga(1)-O(3) bond length is 1.89 Å. The Ga(1)-O(4) bond length is 1.91 Å. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to two equivalent K(2), three equivalent K(1), one Li(1), one Li(2), and one Ga(1) atom. In the second O site, O(4) is bonded in a 5-coordinate geometry to one K(1), one K(2), one Li(1), one Li(2), two equivalent Li(3), and one Ga(1) atom. In the third O site, O(1) is bonded in a 7-coordinate geometry to one K(1), two equivalent K(2), one Li(1), one Li(2), one Li(3), and one Ga(1) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), one Li(1), one Li(2), one Li(3), and one Ga(1) atom.