La2C11N4H4O11 crystallizes in the orthorhombic Pnma space group. La(1) is bonded in a 9-coordinate geometry to one N(2), one O(1), one O(3), one O(4), one O(6), two equivalent O(2), and two equivalent O(5) atoms. The La(1)-N(2) bond length is 2.81 Å. The La(1)-O(1) bond length is 2.91 Å. The La(1)-O(3) bond length is 2.53 Å. The La(1)-O(4) bond length is 2.52 Å. The La(1)-O(6) bond length is 2.52 Å. There is one shorter (2.55 Å) and one longer (2.58 Å) La(1)-O(2) bond length. There is one shorter (2.57 Å) and one longer (2.62 Å) La(1)-O(5) bond length. There are six inequivalent C sites. In the first C site, C(6) is bonded in a trigonal planar geometry to one O(6) and two equivalent O(5) atoms. The C(6)-O(6) bond length is 1.28 Å. Both C(6)-O(5) bond lengths are 1.27 Å. In the second C site, C(1) is bonded in a 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 third C site, C(2) is bonded in a distorted single-bond geometry to one N(2) atom. The C(2)-N(2) bond length is 1.35 Å. In the fourth C site, C(3) is bonded in a distorted single-bond geometry to one C(4) and one H(1) atom. The C(3)-C(4) bond length is 1.38 Å. The C(3)-H(1) bond length is 0.94 Å. In the fifth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(3), one C(5), and one N(1) atom. The C(4)-C(5) bond length is 1.48 Å. The C(4)-N(1) bond length is 1.36 Å. In the sixth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(5)-O(3) bond length is 1.24 Å. The C(5)-O(4) bond length is 1.24 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one C(4), one N(2), and one H(2) atom. The N(1)-N(2) bond length is 1.33 Å. The N(1)-H(2) bond length is 0.87 Å. In the second N site, N(2) is bonded in a distorted single-bond geometry to one La(1), one C(2), and one N(1) atom. There are two 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 N(1) atom. There are six inequivalent O sites. In the first O site, O(5) is bonded in a distorted single-bond geometry to two equivalent La(1) and one C(6) atom. In the second O site, O(6) is bonded in a distorted single-bond geometry to two equivalent La(1) and one C(6) atom. In the third O site, O(1) is bonded in a single-bond geometry to one La(1) and one C(1) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to two equivalent La(1) and one C(1) atom. In the fifth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one La(1) and one C(5) atom. In the sixth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one La(1) and one C(5) atom. Linkers: 8 [O]C(=O)c1cc(C([O])=O)[nH]n1. Metal clusters: 8 [La]. The MOF has largest included sphere 6.78 A, density 1.77 g/cm3, surface area 2435.37 m2/g, accessible volume 0.27 cm3/g