La2(C4H4O5)3 crystallizes in the hexagonal P-62c space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a distorted pentagonal pyramidal geometry to six equivalent O(1) atoms. All La(1)-O(1) bond lengths are 2.47 Å. In the second La site, La(2) is bonded in a 9-coordinate geometry to three equivalent O(3) and six equivalent O(2) atoms. All La(2)-O(3) bond lengths are 2.58 Å. All La(2)-O(2) bond lengths are 2.50 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.25 Å. The C(1)-O(2) bond length is 1.24 Å. In the second C site, C(2) is bonded in a distorted trigonal non-coplanar geometry to one C(1), one H(1), one H(2), and one O(3) atom. The C(2)-H(1) bond length is 0.96 Å. The C(2)-H(2) bond length is 0.96 Å. The C(2)-O(3) bond length is 1.42 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. There are three inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 120 degrees geometry to one La(2) and two equivalent C(2) atoms. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to one La(1) and one C(1) atom. In the third O site, O(2) is bonded in a distorted bent 120 degrees geometry to one La(2) and one C(1) atom. Linkers: 6 [O]C(=O)COCC([O])=O. Metal clusters: 4 [La]. The MOF has largest included sphere 6.34 A, density 1.64 g/cm3, surface area 3155.92 m2/g, accessible volume 0.27 cm3/g