La2H3(C5O4)3 crystallizes in the triclinic P-1 space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a distorted pentagonal pyramidal geometry to one O(1), one O(11), one O(12), one O(2), one O(8), and one O(9) atom. The La(1)-O(1) bond length is 2.60 Å. The La(1)-O(11) bond length is 2.57 Å. The La(1)-O(12) bond length is 2.41 Å. The La(1)-O(2) bond length is 2.56 Å. The La(1)-O(8) bond length is 2.62 Å. The La(1)-O(9) bond length is 2.61 Å. In the second La site, La(2) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(9) atom. The La(2)-O(1) bond length is 2.60 Å. The La(2)-O(10) bond length is 2.66 Å. The La(2)-O(2) bond length is 2.79 Å. The La(2)-O(3) bond length is 2.67 Å. The La(2)-O(4) bond length is 2.62 Å. The La(2)-O(5) bond length is 2.52 Å. The La(2)-O(6) bond length is 2.50 Å. The La(2)-O(7) bond length is 2.59 Å. The La(2)-O(9) bond length is 2.62 Å. There are fifteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(12), and one O(6) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(12) bond length is 1.27 Å. The C(1)-O(6) bond length is 1.25 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(4) atom. The C(2)-C(3) bond length is 1.38 Å. The C(2)-C(4) bond length is 1.39 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(4), and one H(1) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-H(1) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(2), one C(3), and one C(5) atom. The C(4)-C(5) bond length is 1.52 Å. In the fifth C site, C(5) is bonded in a bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(5)-O(3) bond length is 1.26 Å. The C(5)-O(4) bond length is 1.24 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(8), and one O(9) atom. The C(6)-C(7) bond length is 1.49 Å. The C(6)-O(8) bond length is 1.25 Å. The C(6)-O(9) bond length is 1.29 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(6), one C(8), and one C(9) atom. The C(7)-C(8) bond length is 1.39 Å. The C(7)-C(9) bond length is 1.39 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(7), one C(9), and one H(2) atom. The C(8)-C(9) bond length is 1.38 Å. The C(8)-H(2) bond length is 0.93 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(7), and one C(8) atom. The C(9)-C(10) bond length is 1.52 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(1), and one O(5) atom. The C(10)-O(1) bond length is 1.28 Å. The C(10)-O(5) bond length is 1.23 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(12), one O(10), and one O(11) atom. The C(11)-C(12) bond length is 1.53 Å. The C(11)-O(10) bond length is 1.24 Å. The C(11)-O(11) bond length is 1.28 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(14) atom. The C(12)-C(13) bond length is 1.39 Å. The C(12)-C(14) bond length is 1.39 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(12), one C(14), and one H(3) atom. The C(13)-C(14) bond length is 1.40 Å. The C(13)-H(3) bond length is 0.93 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(12), one C(13), and one C(15) atom. The C(14)-C(15) bond length is 1.49 Å. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(14), one O(2), and one O(7) atom. The C(15)-O(2) bond length is 1.28 Å. The C(15)-O(7) bond length is 1.25 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(8) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(13) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one La(1), one La(2), and one C(10) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one La(1), one La(2), and one C(15) atom. In the third O site, O(3) is bonded in a single-bond geometry to one La(2) and one C(5) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one La(2) and one C(5) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one La(2) and one C(10) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one La(2) and one C(1) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one La(2) and one C(15) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one La(1) and one C(6) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one La(1), one La(2), and one C(6) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one La(2) and one C(11) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one La(1) and one C(11) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one La(1) and one C(1) atom. Linkers: 4 [O]C(=O)c1cc(C([O])=O)c(C([O])=O)cc1C([O])=O. Metal clusters: 4 [La]. The MOF has largest included sphere 5.77 A, density 2.06 g/cm3, surface area 2385.47 m2/g, accessible volume 0.15 cm3/g