LaC17(NO2)3 crystallizes in the monoclinic C2/c space group. La(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and two equivalent O(3) atoms. The La(1)-O(1) bond length is 2.53 Å. The La(1)-O(2) bond length is 2.59 Å. The La(1)-O(4) bond length is 2.54 Å. The La(1)-O(5) bond length is 2.50 Å. The La(1)-O(6) bond length is 2.49 Å. There is one shorter (2.48 Å) and one longer (2.83 Å) La(1)-O(3) bond length. There are seventeen inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(15), one C(2), and one C(6) atom. The C(1)-C(15) bond length is 1.49 Å. The C(1)-C(2) bond length is 1.39 Å. The C(1)-C(6) bond length is 1.39 Å. In the second C site, C(2) is bonded in a bent 120 degrees geometry to one C(1) and one C(3) atom. The C(2)-C(3) bond length is 1.39 Å. In the third C site, C(3) is bonded in a bent 120 degrees geometry to one C(2) and one C(4) atom. The C(3)-C(4) bond length is 1.39 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(7) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-C(7) bond length is 1.42 Å. In the fifth C site, C(5) is bonded in a single-bond geometry to one C(4) and one C(6) atom. The C(5)-C(6) bond length is 1.39 Å. In the sixth C site, C(6) is bonded in a bent 120 degrees geometry to one C(1) and one C(5) atom. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(4), one C(8), and one N(3) atom. The C(7)-C(8) bond length is 1.42 Å. The C(7)-N(3) bond length is 1.42 Å. In the eighth C site, C(8) is bonded in a distorted water-like geometry to one C(7) and one N(1) atom. The C(8)-N(1) bond length is 1.42 Å. In the ninth C site, C(9) is bonded in a single-bond geometry to one C(10), one C(14), and one N(1) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-C(14) bond length is 1.39 Å. The C(9)-N(1) bond length is 1.32 Å. In the tenth C site, C(10) is bonded in a bent 120 degrees geometry to one C(11) and one C(9) atom. The C(10)-C(11) bond length is 1.39 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(16) atom. The C(11)-C(12) bond length is 1.39 Å. The C(11)-C(16) bond length is 1.49 Å. In the twelfth C site, C(12) is bonded in a bent 120 degrees geometry to one C(11) and one C(13) atom. The C(12)-C(13) bond length is 1.39 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one C(12), one C(14), and one C(17) atom. The C(13)-C(14) bond length is 1.39 Å. The C(13)-C(17) bond length is 1.51 Å. In the fourteenth C site, C(14) is bonded in a bent 120 degrees geometry to one C(13) and one C(9) atom. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(15)-O(1) bond length is 1.27 Å. The C(15)-O(2) bond length is 1.26 Å. In the sixteenth C site, C(16) is bonded in a bent 120 degrees geometry to one C(11), one O(3), and one O(4) atom. The C(16)-O(3) bond length is 1.26 Å. The C(16)-O(4) bond length is 1.25 Å. In the seventeenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(5), and one O(6) atom. The C(17)-O(5) bond length is 1.26 Å. The C(17)-O(6) bond length is 1.24 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one C(8), one C(9), and one N(2) atom. The N(1)-N(2) bond length is 1.42 Å. In the second N site, N(2) is bonded in a water-like geometry to one N(1) and one N(3) atom. The N(2)-N(3) bond length is 1.42 Å. In the third N site, N(3) is bonded in a single-bond geometry to one C(7) and one N(2) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one La(1) and one C(15) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one La(1) and one C(15) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to two equivalent La(1) and one C(16) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to one La(1) and one C(16) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one La(1) and one C(17) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one La(1) and one C(17) atom. Linkers: 8 [O]C(=O)c1[c][c]c(-c2[c]n(-c3[c]c(C([O])=O)[c]c(C([O])=O)[c]3)nn2)[c][c]1. Metal clusters: 4 [C]1O[La]234(O1)O[C]O[La]1(O[C]O1)(O[C]O2)(O[C]O3)O[C]O4. The MOF has largest included sphere 7.59 A, density 1.00 g/cm3, surface area 3600.81 m2/g, accessible volume 0.65 cm3/g