LiC5H2O4 crystallizes in the triclinic P-1 space group. Li(1) is bonded to one O(1), one O(4), and two equivalent O(3) atoms to form edge-sharing LiO4 tetrahedra. The Li(1)-O(1) bond length is 1.92 Å. The Li(1)-O(4) bond length is 1.94 Å. There is one shorter (1.94 Å) and one longer (1.99 Å) Li(1)-O(3) bond length. There are five inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.51 Å. The C(1)-O(1) bond length is 1.24 Å. The C(1)-O(2) bond length is 1.31 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(4) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-C(4) bond length is 1.42 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one H(2) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-H(2) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(2), one C(3), and one C(5) atom. The C(4)-C(5) bond length is 1.51 Å. In the fifth C site, C(5) is bonded in a bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(5)-O(3) bond length is 1.26 Å. The C(5)-O(4) bond length is 1.28 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a linear geometry to one O(2) and one O(4) atom. The H(1)-O(2) bond length is 1.05 Å. The H(1)-O(4) bond length is 1.41 Å. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Li(1) and one C(1) atom. In the second O site, O(2) is bonded in a water-like geometry to one C(1) and one H(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Li(1) and one C(5) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one C(5), and one H(1) atom. Linkers: 1 [O]C(=O)c1cc(C(=O)O)c(C([O])=O)cc1C(=O)O ,2 [O]C(=O)c1c[c]c([C]=O)cc1C(=O)O. Metal clusters: 2 [Li]. The MOF has largest included sphere 1.59 A, density 1.76 g/cm3, surface area 3284.43 m2/g, accessible volume 0.09 cm3/g