LaC9N3H5O7 crystallizes in the monoclinic Pc space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one N(1), one N(3), one N(6), one O(1), one O(11), one O(13), one O(2), one O(5), and one O(8) atom. The La(1)-N(1) bond length is 2.78 Å. The La(1)-N(3) bond length is 2.80 Å. The La(1)-N(6) bond length is 2.76 Å. The La(1)-O(1) bond length is 2.49 Å. The La(1)-O(11) bond length is 2.48 Å. The La(1)-O(13) bond length is 2.63 Å. The La(1)-O(2) bond length is 2.45 Å. The La(1)-O(5) bond length is 2.48 Å. The La(1)-O(8) bond length is 2.54 Å. In the second La site, La(2) is bonded in a 9-coordinate geometry to one N(2), one N(4), one N(5), one O(14), one O(3), one O(4), one O(6), one O(7), and one O(9) atom. The La(2)-N(2) bond length is 2.83 Å. The La(2)-N(4) bond length is 2.77 Å. The La(2)-N(5) bond length is 2.79 Å. The La(2)-O(14) bond length is 2.51 Å. The La(2)-O(3) bond length is 2.57 Å. The La(2)-O(4) bond length is 2.50 Å. The La(2)-O(6) bond length is 2.45 Å. The La(2)-O(7) bond length is 2.63 Å. The La(2)-O(9) bond length is 2.48 Å. There are eighteen inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(1) atom. The C(1)-N(1) bond length is 1.34 Å. The C(1)-N(2) bond length is 1.34 Å. The C(1)-H(1) bond length is 1.09 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(3), one C(6), and one N(2) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(6) bond length is 1.51 Å. The C(2)-N(2) bond length is 1.35 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(2) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(2) bond length is 1.08 Å. In the fourth 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 1.51 Å. The C(4)-N(1) bond length is 1.35 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(1), and one O(2) atom. The C(5)-O(1) bond length is 1.26 Å. The C(5)-O(2) bond length is 1.26 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(3), and one O(4) atom. The C(6)-O(3) bond length is 1.27 Å. The C(6)-O(4) bond length is 1.26 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one N(3), one N(4), and one H(3) atom. The C(7)-N(3) bond length is 1.34 Å. The C(7)-N(4) bond length is 1.34 Å. The C(7)-H(3) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one N(4) atom. The C(8)-N(4) bond length is 1.35 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(10) and one H(4) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-H(4) bond length is 1.08 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(11), one C(9), and one N(3) atom. The C(10)-C(11) bond length is 1.52 Å. The C(10)-N(3) bond length is 1.34 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(5), and one O(6) atom. The C(11)-O(5) bond length is 1.26 Å. The C(11)-O(6) bond length is 1.26 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one O(7) and one O(8) atom. The C(12)-O(7) bond length is 1.27 Å. The C(12)-O(8) bond length is 1.27 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one N(5), one N(6), and one H(5) atom. The C(13)-N(5) bond length is 1.34 Å. The C(13)-N(6) bond length is 1.34 Å. The C(13)-H(5) bond length is 1.09 Å. In the fourteenth C site, C(14) is bonded in a distorted trigonal planar geometry to one C(15), one C(18), and one N(6) atom. The C(14)-C(15) bond length is 1.39 Å. The C(14)-C(18) bond length is 1.52 Å. The C(14)-N(6) bond length is 1.35 Å. In the fifteenth C site, C(15) is bonded in a distorted single-bond geometry to one C(14), one C(16), and one H(6) atom. The C(15)-C(16) bond length is 1.39 Å. The C(15)-H(6) bond length is 1.09 Å. In the sixteenth C site, C(16) is bonded in a distorted trigonal planar geometry to one C(15), one C(17), and one N(5) atom. The C(16)-C(17) bond length is 1.52 Å. The C(16)-N(5) bond length is 1.35 Å. In the seventeenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(16), one O(10), and one O(9) atom. The C(17)-O(10) bond length is 1.25 Å. The C(17)-O(9) bond length is 1.28 Å. In the eighteenth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one C(14), one O(11), and one O(12) atom. The C(18)-O(11) bond length is 1.28 Å. The C(18)-O(12) bond length is 1.25 Å. There are six inequivalent N sites. In the first N site, N(1) is bonded in a distorted bent 120 degrees geometry to one La(1), one C(1), and one C(4) atom. In the second N site, N(2) is bonded in a distorted bent 120 degrees geometry to one La(2), one C(1), and one C(2) atom. In the third N site, N(3) is bonded in a distorted bent 120 degrees geometry to one La(1), one C(10), and one C(7) atom. In the fourth N site, N(4) is bonded in a distorted bent 120 degrees geometry to one La(2), one C(7), and one C(8) atom. In the fifth N site, N(5) is bonded in a distorted bent 120 degrees geometry to one La(2), one C(13), and one C(16) atom. In the sixth N site, N(6) is bonded in a distorted bent 120 degrees geometry to one La(1), one C(13), and one C(14) atom. There are ten inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(9) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(13) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(15) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(13) atom. The H(7)-O(13) bond length is 0.99 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(13) atom. The H(8)-O(13) bond length is 1.00 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(14) atom. The H(9)-O(14) bond length is 0.99 Å. In the tenth H site, H(10) is bonded in a linear geometry to one O(12) and one O(14) atom. The H(10)-O(12) bond length is 1.57 Å. The H(10)-O(14) bond length is 1.01 Å. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one La(1) and one C(5) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one La(1) and one C(5) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one La(2) and one C(6) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one La(2) and one C(6) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one La(1) and one C(11) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one La(2) and one C(11) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one La(2) and one C(12) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one La(1) and one C(12) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one La(2) and one C(17) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one C(17) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one La(1) and one C(18) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one C(18) and one H(10) atom. In the thirteenth O site, O(13) is bonded in a water-like geometry to one La(1), one H(7), and one H(8) atom. In the fourteenth O site, O(14) is bonded in a distorted water-like geometry to one La(2), one H(10), and one H(9) atom. Linkers: 5 [O]C(=O)c1cc(C([O])=O)ncn1. Metal clusters: 4 [La]. The MOF has largest included sphere 3.06 A, density 2.28 g/cm3, surface area 2641.43 m2/g, accessible volume 0.06 cm3/g