K2LiH2(SeO3)2 crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one H(2), one O(1), one O(2), one O(3), one O(4), and one O(6) atom. In the second K site, K(2) is bonded in a 7-coordinate geometry to one Se(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(1) atoms. Li(1) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(6) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) and one O(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one K(1) and one O(2) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a water-like geometry to one K(2), one O(3), and one O(5) atom. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(4), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(1), two equivalent K(2), one H(1), and one Se(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Li(1), and one H(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one Se(1) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one K(1), one Li(1), and one Se(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one K(2), one H(1), and one Se(1) atom. In the sixth O site, O(6) is bonded in a distorted tetrahedral geometry to one K(1), one K(2), one Li(1), and one Se(2) atom.
K2LiH2(SeO3)2 crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one H(2), one O(1), one O(2), one O(3), one O(4), and one O(6) atom. The K(1)-H(2) bond length is 2.74 Å. The K(1)-O(1) bond length is 3.09 Å. The K(1)-O(2) bond length is 2.58 Å. The K(1)-O(3) bond length is 2.84 Å. The K(1)-O(4) bond length is 3.07 Å. The K(1)-O(6) bond length is 2.74 Å. In the second K site, K(2) is bonded in a 7-coordinate geometry to one Se(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(1) atoms. The K(2)-Se(1) bond length is 3.70 Å. The K(2)-O(2) bond length is 2.66 Å. The K(2)-O(3) bond length is 2.89 Å. The K(2)-O(5) bond length is 3.12 Å. The K(2)-O(6) bond length is 2.93 Å. There is one shorter (2.86 Å) and one longer (3.14 Å) K(2)-O(1) bond length. Li(1) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(6) atom. The Li(1)-O(2) bond length is 1.83 Å. The Li(1)-O(4) bond length is 1.93 Å. The Li(1)-O(6) bond length is 1.93 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) and one O(5) atom. The H(1)-O(1) bond length is 1.02 Å. The H(1)-O(5) bond length is 1.73 Å. In the second H site, H(2) is bonded in a single-bond geometry to one K(1) and one O(2) atom. The H(2)-O(2) bond length is 0.97 Å. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a water-like geometry to one K(2), one O(3), and one O(5) atom. The Se(1)-O(3) bond length is 1.71 Å. The Se(1)-O(5) bond length is 1.73 Å. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(4), and one O(6) atom. The Se(2)-O(1) bond length is 1.88 Å. The Se(2)-O(4) bond length is 1.69 Å. The Se(2)-O(6) bond length is 1.70 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(1), two equivalent K(2), one H(1), and one Se(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Li(1), and one H(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one Se(1) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one K(1), one Li(1), and one Se(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one K(2), one H(1), and one Se(1) atom. In the sixth O site, O(6) is bonded in a distorted tetrahedral geometry to one K(1), one K(2), one Li(1), and one Se(2) atom.