CuC4H6O5 is Indium-like structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two CuC4H6O5 clusters. In one of the CuC4H6O5 clusters, Cu(1) is bonded in a distorted square pyramidal geometry to one O(1), one O(2), one O(3), one O(4), and one O(5) atom. The Cu(1)-O(1) bond length is 1.98 Å. The Cu(1)-O(2) bond length is 2.00 Å. The Cu(1)-O(3) bond length is 2.26 Å. The Cu(1)-O(4) bond length is 1.99 Å. The Cu(1)-O(5) bond length is 2.00 Å. There are four inequivalent C sites. In the first C site, C(3) is bonded in a distorted trigonal non-coplanar geometry to one H(3), one H(4), and one O(3) atom. The C(3)-H(3) bond length is 1.10 Å. The C(3)-H(4) bond length is 1.10 Å. The C(3)-O(3) bond length is 1.45 Å. In the second C site, C(4) is bonded in a distorted trigonal non-coplanar geometry to one H(5), one H(6), and one O(3) atom. The C(4)-H(5) bond length is 1.10 Å. The C(4)-H(6) bond length is 1.09 Å. The C(4)-O(3) bond length is 1.45 Å. In the third C site, C(1) is bonded in a trigonal planar geometry to one H(1), one O(1), and one O(4) atom. The C(1)-H(1) bond length is 1.10 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(4) bond length is 1.27 Å. In the fourth C site, C(2) is bonded in a trigonal planar geometry to one H(2), one O(2), and one O(5) atom. The C(2)-H(2) bond length is 1.11 Å. The C(2)-O(2) bond length is 1.27 Å. The C(2)-O(5) bond length is 1.27 Å. There are six 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(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(3) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(4) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(4) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one C(3), and one C(4) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(2) atom. In one of the CuC4H6O5 clusters, Cu(2) is bonded in a distorted square pyramidal geometry to one O(10), one O(6), one O(7), one O(8), and one O(9) atom. The Cu(2)-O(10) bond length is 2.30 Å. The Cu(2)-O(6) bond length is 2.00 Å. The Cu(2)-O(7) bond length is 2.01 Å. The Cu(2)-O(8) bond length is 1.99 Å. The Cu(2)-O(9) bond length is 1.99 Å. There are four inequivalent C sites. In the first C site, C(5) is bonded in a trigonal planar geometry to one H(7), one O(6), and one O(7) atom. The C(5)-H(7) bond length is 1.11 Å. The C(5)-O(6) bond length is 1.27 Å. The C(5)-O(7) bond length is 1.27 Å. In the second C site, C(6) is bonded in a trigonal planar geometry to one H(8), one O(8), and one O(9) atom. The C(6)-H(8) bond length is 1.11 Å. The C(6)-O(8) bond length is 1.27 Å. The C(6)-O(9) bond length is 1.27 Å. In the third C site, C(7) is bonded in a distorted trigonal non-coplanar geometry to one H(10), one H(9), and one O(10) atom. The C(7)-H(10) bond length is 1.10 Å. The C(7)-H(9) bond length is 1.09 Å. The C(7)-O(10) bond length is 1.45 Å. In the fourth C site, C(8) is bonded in a distorted trigonal non-coplanar geometry to one H(11), one H(12), and one O(10) atom. The C(8)-H(11) bond length is 1.10 Å. The C(8)-H(12) bond length is 1.10 Å. The C(8)-O(10) bond length is 1.45 Å. There are six inequivalent H sites. In the first H site, H(7) is bonded in a single-bond geometry to one C(5) atom. In the second H site, H(8) is bonded in a single-bond geometry to one C(6) atom. In the third H site, H(9) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(10) is bonded in a single-bond geometry to one C(7) atom. In the fifth H site, H(11) is bonded in a single-bond geometry to one C(8) atom. In the sixth H site, H(12) is bonded in a single-bond geometry to one C(8) atom. There are five inequivalent O sites. In the first O site, O(7) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(5) atom. In the second O site, O(8) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(6) atom. In the third O site, O(6) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(5) atom. In the fourth O site, O(9) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(6) atom. In the fifth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Cu(2), one C(7), and one C(8) atom. Linkers: 2 C1COCCO1. Metal clusters: 2 [CH]1O[Cu]234O[CH]O[Cu]2(O1)(O[CH]O3)O[CH]O4. The MOF has largest included sphere 1.52 A, density 2.14 g/cm3, surface area 3564.51 m2/g, accessible volume 0.09 cm3/g