LiKSO4 crystallizes in the monoclinic Cc space group. K(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(4), and three equivalent O(3) atoms. Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with four equivalent S(1)O4 tetrahedra. S(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent K(1), one Li(1), and one S(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent K(1), one Li(1), and one S(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to three equivalent K(1), one Li(1), and one S(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent K(1), one Li(1), and one S(1) atom.
LiKSO4 crystallizes in the monoclinic Cc space group. K(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(4), and three equivalent O(3) atoms. There is one shorter (2.91 Å) and one longer (2.93 Å) K(1)-O(1) bond length. There is one shorter (2.91 Å) and one longer (2.98 Å) K(1)-O(2) bond length. There is one shorter (2.85 Å) and one longer (3.10 Å) K(1)-O(4) bond length. There are a spread of K(1)-O(3) bond distances ranging from 2.96-3.16 Å. Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with four equivalent S(1)O4 tetrahedra. The Li(1)-O(1) bond length is 1.97 Å. The Li(1)-O(2) bond length is 1.96 Å. The Li(1)-O(3) bond length is 1.95 Å. The Li(1)-O(4) bond length is 1.96 Å. S(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SO4 tetrahedra that share corners with four equivalent Li(1)O4 tetrahedra. The S(1)-O(1) bond length is 1.49 Å. The S(1)-O(2) bond length is 1.49 Å. The S(1)-O(3) bond length is 1.49 Å. The S(1)-O(4) bond length is 1.49 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent K(1), one Li(1), and one S(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent K(1), one Li(1), and one S(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to three equivalent K(1), one Li(1), and one S(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent K(1), one Li(1), and one S(1) atom.