Li2C7NH3O4 crystallizes in the monoclinic C2/c space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(4), and two equivalent O(3) atoms to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Li(2)NO3 tetrahedra and  an edgeedge with one Li(1)O4 trigonal pyramid. The Li(1)-O(2) bond length is 1.87 Å. The Li(1)-O(4) bond length is 2.03 Å. There is one shorter (1.97 Å) and one longer (1.99 Å) Li(1)-O(3) bond length. In the second Li site, Li(2) is bonded to one N(1), one O(4), and two equivalent O(1) atoms to form distorted LiNO3 tetrahedra that share  a cornercorner with one Li(1)O4 trigonal pyramid and  an edgeedge with one Li(2)NO3 tetrahedra. The Li(2)-N(1) bond length is 2.10 Å. The Li(2)-O(4) bond length is 1.88 Å. There is one shorter (1.96 Å) and one longer (1.97 Å) Li(2)-O(1) bond length. There are seven inequivalent C sites. In the first C site, C(7) is bonded in a trigonal planar geometry to one C(2), one C(3), and one C(6) atom. The C(7)-C(2) bond length is 1.51 Å. The C(7)-C(3) bond length is 1.40 Å. The C(7)-C(6) bond length is 1.40 Å. In the second C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(1), and one O(3) atom. The C(1)-C(4) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(3) bond length is 1.26 Å. In the third C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(2), and one O(4) atom. The C(2)-O(2) bond length is 1.26 Å. The C(2)-O(4) bond length is 1.28 Å. In the fourth C site, C(3) is bonded in a distorted single-bond geometry to one C(4), one C(7), and one H(1) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-H(1) bond length is 1.09 Å. In the fifth C site, C(4) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(5) atom. The C(4)-C(5) bond length is 1.40 Å. In the sixth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one N(1), and one H(2) atom. The C(5)-N(1) bond length is 1.34 Å. The C(5)-H(2) bond length is 1.09 Å. In the seventh C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(7), one N(1), and one H(3) atom. The C(6)-N(1) bond length is 1.35 Å. The C(6)-H(3) bond length is 1.09 Å. N(1) is bonded in a trigonal planar geometry to one Li(2), one C(5), and one C(6) atom. 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(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Li(2) and one C(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Li(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to two equivalent Li(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Li(2), and one C(2) atom. Linkers: 4 [O]C(=O)c1cncc(C([O])=O)c1. Metal clusters: 8 [Li]. The MOF has largest included sphere 2.23 A, density 1.58 g/cm3, surface area 3735.76 m2/g, accessible volume 0.13 cm3/g