PbC7NH3O4 crystallizes in the tetragonal I4_1/a space group. Pb(1) is bonded in a 6-coordinate geometry to one N(1), one O(2), two equivalent O(1), and two equivalent O(4) atoms. The Pb(1)-N(1) bond length is 2.58 Å. The Pb(1)-O(2) bond length is 2.52 Å. There is one shorter (2.64 Å) and one longer (2.80 Å) Pb(1)-O(1) bond length. There is one shorter (2.52 Å) and one longer (2.75 Å) Pb(1)-O(4) bond length. There are seven 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(1), and one O(2) atom. The C(1)-C(3) bond length is 1.51 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.27 Å. In the second C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(3), and one O(4) atom. The C(5)-C(2) bond length is 1.51 Å. The C(5)-O(3) bond length is 1.26 Å. The C(5)-O(4) bond length is 1.28 Å. In the third C site, C(2) is bonded in a distorted trigonal planar geometry to one C(3), one C(5), and one N(1) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-N(1) bond length is 1.35 Å. In the fourth C site, C(6) is bonded in a distorted single-bond geometry to one C(7) and one H(2) atom. The C(6)-C(7) bond length is 1.39 Å. The C(6)-H(2) bond length is 1.09 Å. In the fifth C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(4) atom. The C(3)-C(4) bond length is 1.40 Å. In the sixth C site, C(7) is bonded in a distorted trigonal planar geometry to one C(6), one N(1), and one H(3) atom. The C(7)-N(1) bond length is 1.33 Å. The C(7)-H(3) bond length is 1.09 Å. In the seventh C site, C(4) is bonded in a distorted single-bond geometry to one C(3) and one H(1) atom. The C(4)-H(1) bond length is 1.09 Å. N(1) is bonded in a distorted bent 120 degrees geometry to one Pb(1), one C(2), and one C(7) atom. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(6) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to two equivalent Pb(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Pb(1) and one C(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one C(5) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Pb(1) and one C(5) atom. Linkers: 8 [O]C(=O)c1cccnc1C([O])=O. Metal clusters: 8 [Pb]. The MOF has largest included sphere 2.74 A, density 3.40 g/cm3, surface area 1737.84 m2/g, accessible volume 0.06 cm3/g