LiC2H2O3 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(3), one O(4), and one O(6) atom to form corner-sharing LiO4 tetrahedra. The Li(1)-O(2) bond length is 1.94 Å. The Li(1)-O(3) bond length is 2.00 Å. The Li(1)-O(4) bond length is 1.93 Å. The Li(1)-O(6) bond length is 1.97 Å. In the second Li site, Li(2) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form corner-sharing LiO4 tetrahedra. The Li(2)-O(1) bond length is 1.94 Å. The Li(2)-O(3) bond length is 1.97 Å. The Li(2)-O(4) bond length is 1.99 Å. The Li(2)-O(5) bond length is 1.93 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(2), and one O(5) atom. The C(1)-C(3) bond length is 1.45 Å. The C(1)-O(2) bond length is 1.27 Å. The C(1)-O(5) bond length is 1.27 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(1), and one O(4) atom. The C(2)-C(4) bond length is 1.45 Å. The C(2)-O(1) bond length is 1.27 Å. The C(2)-O(4) bond length is 1.27 Å. In the third C site, C(3) is bonded in a linear geometry to one C(1) and one C(4) atom. The C(3)-C(4) bond length is 1.22 Å. In the fourth C site, C(4) is bonded in a linear geometry to one C(2) and one C(3) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) atom. The H(1)-O(3) bond length is 1.00 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(6) atom. The H(2)-O(6) bond length is 0.99 Å. In the third H site, H(3) is bonded in a distorted single-bond geometry to one O(2) and one O(6) atom. The H(3)-O(2) bond length is 1.63 Å. The H(3)-O(6) bond length is 1.01 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(3) atom. The H(4)-O(3) bond length is 1.00 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Li(2) and one C(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one C(1), and one H(3) atom. In the third O site, O(3) is bonded in a distorted tetrahedral geometry to one Li(1), one Li(2), one H(1), and one H(4) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one Li(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Li(2) and one C(1) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Li(1), one H(2), and one H(3) atom. Linkers: 2 [O]C(=O)C#CC([O])=O. Metal clusters: 4 [Li]. The MOF has largest included sphere 2.10 A, density 1.55 g/cm3, surface area 4189.43 m2/g, accessible volume 0.13 cm3/g