PbC10N3H4O4 crystallizes in the tetragonal I4_1/a space group. Pb(1) is bonded in a 7-coordinate geometry to one N(1), one N(2), one N(3), one O(1), one O(3), and two equivalent O(4) atoms. The Pb(1)-N(1) bond length is 2.65 Å. The Pb(1)-N(2) bond length is 2.35 Å. The Pb(1)-N(3) bond length is 2.57 Å. The Pb(1)-O(1) bond length is 2.35 Å. The Pb(1)-O(3) bond length is 2.78 Å. There is one shorter (2.46 Å) and one longer (2.65 Å) Pb(1)-O(4) bond length. There are ten inequivalent C sites. In the first C site, C(7) is bonded in a distorted single-bond geometry to one C(6) and one H(1) atom. The C(7)-C(6) bond length is 1.40 Å. The C(7)-H(1) bond length is 1.09 Å. In the second C site, C(8) is bonded in a distorted single-bond geometry to one C(9) and one H(2) atom. The C(8)-C(9) bond length is 1.40 Å. The C(8)-H(2) bond length is 1.09 Å. In the third C site, C(9) is bonded in a distorted trigonal planar geometry to one C(10), one C(8), and one H(3) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-H(3) bond length is 1.09 Å. In the fourth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(9), one N(3), and one H(4) atom. The C(10)-N(3) bond length is 1.34 Å. The C(10)-H(4) bond length is 1.09 Å. In the fifth C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.30 Å. The C(1)-O(2) bond length is 1.25 Å. In the sixth C site, C(2) is bonded in a distorted single-bond geometry to one N(1) atom. The C(2)-N(1) bond length is 1.38 Å. In the seventh C site, C(6) is bonded in a trigonal planar geometry to one C(4), one C(7), and one N(3) atom. The C(6)-C(4) bond length is 1.46 Å. The C(6)-N(3) bond length is 1.36 Å. In the eighth C site, C(3) is bonded in a distorted single-bond geometry to one N(2) atom. The C(3)-N(2) bond length is 1.36 Å. In the ninth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(6), one N(1), and one N(2) atom. The C(4)-N(1) bond length is 1.36 Å. The C(4)-N(2) bond length is 1.34 Å. In the tenth C site, C(5) is bonded in a distorted bent 120 degrees geometry to 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 1.30 Å. There are three inequivalent N sites. In the first N site, N(3) is bonded in a distorted trigonal planar geometry to one Pb(1), one C(10), and one C(6) atom. In the second N site, N(1) is bonded in a distorted water-like geometry to one Pb(1), one C(2), and one C(4) atom. In the third N site, N(2) is bonded in a distorted trigonal planar geometry to one Pb(1), one C(3), and one C(4) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(7) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(8) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(9) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(10) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Pb(1) and one C(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one C(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Pb(1) and 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: 4 [O]C(=O)C1=C(C([O])=O)N=C(c2ccccn2)[N]1 ,3 [O]C(=O)[C]1N=C(c2ccccn2)N=C1C([O])=O. Metal clusters: 8 [Pb]. The MOF has largest included sphere 5.71 A, density 1.87 g/cm3, surface area 2601.60 m2/g, accessible volume 0.28 cm3/g