LaH8(C4O5)2 crystallizes in the tetragonal I-42d space group. La(1) is bonded in a 8-coordinate geometry to one O(5), one O(6), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. The La(1)-O(5) bond length is 2.68 Å. The La(1)-O(6) bond length is 2.74 Å. Both La(1)-O(2) bond lengths are 2.56 Å. Both La(1)-O(3) bond lengths are 2.54 Å. Both La(1)-O(4) bond lengths are 2.53 Å. There are three inequivalent C sites. In the first 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 1.23 Å. The C(1)-O(2) bond length is 1.26 Å. In the second C site, C(2,4) is bonded in a distorted trigonal non-coplanar geometry to two equivalent H(1,2) and one O(5) atom. Both C(2,4)-H(1,2) bond lengths are 0.97 Å. The C(2,4)-O(5) bond length is 1.41 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(3)-O(3) bond length is 1.26 Å. The C(3)-O(4) bond length is 1.23 Å. There are two inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(2,4) atom. In the second H site, H(3,4) is bonded in a single-bond geometry to one C(2,4) atom. The H(3,4)-C(2,4) bond length is 0.97 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one La(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one La(1) and one C(3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one La(1) and one C(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one La(1) and two equivalent C(2,4) atoms. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one La(1) and two equivalent C(2,4) atoms. Both O(6)-C(2,4) bond lengths are 1.41 Å. Linkers: 7 [O]C(=O)COCC([O])=O. Metal clusters: 4 [La]. The MOF has largest included sphere 5.84 A, density 1.50 g/cm3, surface area 3354.46 m2/g, accessible volume 0.33 cm3/g