LiH3(C3O)2 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form a mixture of edge and corner-sharing LiO4 tetrahedra. There is one shorter (1.95 Å) and one longer (2.00 Å) Li(1)-O(1) bond length. There is one shorter (1.96 Å) and one longer (2.00 Å) Li(1)-O(2) bond length. There are six inequivalent C sites. In the first C site, C(5) is bonded in a distorted single-bond geometry to one C(1), one C(2), and one H(3) atom. The C(5)-C(1) bond length is 1.39 Å. The C(5)-C(2) bond length is 1.42 Å. The C(5)-H(3) bond length is 1.09 Å. In the second C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(6)-C(1) bond length is 1.50 Å. The C(6)-O(1) bond length is 1.28 Å. The C(6)-O(2) bond length is 1.28 Å. In the third C site, C(1) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(6) atom. The C(1)-C(3) bond length is 1.42 Å. In the fourth C site, C(2) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(5) atom. The C(2)-C(2) bond length is 1.43 Å. The C(2)-C(4) bond length is 1.42 Å. In the fifth C site, C(3) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(3)-H(1) bond length is 1.09 Å. In the sixth C site, C(4) is bonded in a distorted single-bond geometry to one C(2) and one H(2) atom. The C(4)-H(2) bond length is 1.09 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Li(1) and one C(6) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Li(1) and one C(6) atom. Linkers: 2 [O]C(=O)c1ccc2cc(C([O])=O)ccc2c1. Metal clusters: 4 [Li]. The MOF has largest included sphere 1.40 A, density 1.64 g/cm3, surface area 3742.57 m2/g, accessible volume 0.05 cm3/g