Ag2C4H4O5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(5) atoms. The Ag(1)-O(1) bond length is 2.69 Å. The Ag(1)-O(2) bond length is 2.24 Å. There is one shorter (2.26 Å) and one longer (2.68 Å) Ag(1)-O(5) bond length. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one O(2), one O(3), and two equivalent O(4) atoms. The Ag(2)-O(2) bond length is 2.59 Å. The Ag(2)-O(3) bond length is 2.18 Å. There is one shorter (2.22 Å) and one longer (2.53 Å) Ag(2)-O(4) bond length. There are four inequivalent C sites. In the first C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(2) and one O(5) atom. The C(3)-O(2) bond length is 1.28 Å. The C(3)-O(5) bond length is 1.26 Å. In the second C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(4)-O(3) bond length is 1.26 Å. The C(4)-O(4) bond length is 1.28 Å. In the third C site, C(1) is bonded in a distorted trigonal non-coplanar geometry to one H(1), one H(2), and one O(1) atom. The C(1)-H(1) bond length is 1.11 Å. The C(1)-H(2) bond length is 1.10 Å. The C(1)-O(1) bond length is 1.42 Å. In the fourth C site, C(2) is bonded in a distorted trigonal non-coplanar geometry to one H(3), one H(4), and one O(1) atom. The C(2)-H(3) bond length is 1.10 Å. The C(2)-H(4) bond length is 1.10 Å. The C(2)-O(1) bond length is 1.42 Å. There are four 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(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one Ag(1), one C(1), and one C(2) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to one Ag(1), one Ag(2), and one C(3) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Ag(2) and one C(4) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Ag(2) and one C(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Ag(1) and one C(3) atom. Linkers: 4 [O]C(=O)COCC([O])=O. Metal clusters: 8 [Ag]. The MOF has largest included sphere 1.35 A, density 3.70 g/cm3, surface area 1736.57 m2/g, accessible volume 0.03 cm3/g