Ag2C7NH3O4 crystallizes in the monoclinic C2/c space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a linear geometry to one O(1) and one O(3) atom. The Ag(1)-O(1) bond length is 2.13 Å. The Ag(1)-O(3) bond length is 2.17 Å. In the second Ag site, Ag(2) is bonded in a distorted rectangular see-saw-like geometry to one N(1), one O(2), and two equivalent O(4) atoms. The Ag(2)-N(1) bond length is 2.29 Å. The Ag(2)-O(2) bond length is 2.22 Å. There is one shorter (2.31 Å) and one longer (2.71 Å) Ag(2)-O(4) bond length. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one H(1) atom. The C(1)-C(2) bond length is 1.38 Å. The C(1)-N(1) bond length is 1.33 Å. The C(1)-H(1) bond length is 0.93 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 1.52 Å. The C(2)-C(4) bond length is 1.37 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(3)-O(1) bond length is 1.25 Å. The C(3)-O(2) bond length is 1.23 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(2), one C(5), and one H(2) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-H(2) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(7) atom. The C(5)-C(6) bond length is 1.38 Å. The C(5)-C(7) bond length is 1.51 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one N(1), and one H(3) atom. The C(6)-N(1) bond length is 1.33 Å. The C(6)-H(3) bond length is 0.93 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(3), and one O(4) atom. The C(7)-O(3) bond length is 1.24 Å. The C(7)-O(4) bond length is 1.25 Å. N(1) is bonded in a trigonal planar geometry to one Ag(2), one C(1), 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(1) 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(6) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Ag(1) and one C(3) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Ag(2) and one C(3) atom. In the third O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Ag(2) and one C(7) atom. In the fourth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Ag(1) and one C(7) atom. Linkers: 8 [O]C(=O)c1cncc(C([O])=O)c1. Metal clusters: 12 [Ag] ,1 [C]1O[Ag]23O[C]O[Ag]2(O1)[Ag]12O[C]O[Ag]31O[C]O2. The MOF has largest included sphere 3.99 A, density 2.80 g/cm3, surface area 1948.14 m2/g, accessible volume 0.08 cm3/g