CuC4H4O5(C5H11)2 is Indium-derived structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of four neopentane molecules and one CuC4H4O5 cluster. In the CuC4H4O5 cluster, 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 1.99 Å. The Cu(1)-O(2) bond length is 1.99 Å. The Cu(1)-O(3) bond length is 1.99 Å. The Cu(1)-O(4) bond length is 2.00 Å. The Cu(1)-O(5) bond length is 2.23 Å. There are four inequivalent C sites. In the first C site, C(7) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(7)-O(3) bond length is 1.28 Å. The C(7)-O(4) bond length is 1.28 Å. In the second C site, C(13) is bonded in a distorted trigonal non-coplanar geometry to one H(23), one H(24), and one O(5) atom. The C(13)-H(23) bond length is 1.10 Å. The C(13)-H(24) bond length is 1.10 Å. The C(13)-O(5) bond length is 1.44 Å. In the third C site, C(14) is bonded in a distorted trigonal non-coplanar geometry to one H(25), one H(26), and one O(5) atom. The C(14)-H(25) bond length is 1.10 Å. The C(14)-H(26) bond length is 1.10 Å. The C(14)-O(5) bond length is 1.44 Å. In the fourth 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 1.28 Å. The C(1)-O(2) bond length is 1.27 Å. There are four inequivalent H sites. In the first H site, H(23) is bonded in a single-bond geometry to one C(13) atom. In the second H site, H(24) is bonded in a single-bond geometry to one C(13) atom. In the third H site, H(25) is bonded in a single-bond geometry to one C(14) atom. In the fourth H site, H(26) is bonded in a single-bond geometry to one C(14) 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(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(7) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(7) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Cu(1), one C(13), and one C(14) atom. Linkers: 1 C1COCCO1. Metal clusters: 2 [Cu]. The MOF has largest included sphere 2.44 A, density 1.36 g/cm3, surface area 5716.53 m2/g, accessible volume 0.22 cm3/g