NpC22H22(NO5)2 is Indium-like structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four NpC22H22(NO5)2 clusters. Np(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Both Np(1)-O(1) bond lengths are 2.49 Å. Both Np(1)-O(2) bond lengths are 2.50 Å. Both Np(1)-O(3) bond lengths are 2.45 Å. Both Np(1)-O(4) bond lengths are 2.51 Å. Both Np(1)-O(5) bond lengths are 2.35 Å. There are thirteen inequivalent C sites. In the first C site, C(12) is bonded to one N(1), one H(6), one H(7), and one H(8) atom to form corner-sharing CH3N tetrahedra. The C(12)-N(1) bond length is 1.46 Å. The C(12)-H(6) bond length is 1.10 Å. The C(12)-H(7) bond length is 1.10 Å. The C(12)-H(8) bond length is 1.10 Å. In the second C site, C(13) is bonded to one N(1), one H(10), one H(11), and one H(9) atom to form corner-sharing CH3N tetrahedra. The C(13)-N(1) bond length is 1.46 Å. The C(13)-H(10) bond length is 1.10 Å. The C(13)-H(11) bond length is 1.10 Å. The C(13)-H(9) bond length is 1.10 Å. In the third C site, C(1) is bonded in a bent 120 degrees geometry to one C(2) and two equivalent O(1) atoms. The C(1)-C(2) bond length is 1.49 Å. Both C(1)-O(1) bond lengths are 1.28 Å. In the fourth C site, C(2) is bonded in a trigonal planar geometry to one C(1) and two equivalent C(3) atoms. Both C(2)-C(3) bond lengths are 1.40 Å. In the fifth C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(1) atom. The C(3)-H(1) bond length is 1.09 Å. In the sixth C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one H(2) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(2) bond length is 1.09 Å. In the seventh C site, C(5) is bonded in a trigonal planar geometry to one C(6) and two equivalent C(4) atoms. The C(5)-C(6) bond length is 1.49 Å. In the eighth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5) and two equivalent O(2) atoms. Both C(6)-O(2) bond lengths are 1.28 Å. In the ninth C site, C(7) is bonded in a bent 120 degrees geometry to one C(8), one O(3), and one O(4) atom. The C(7)-C(8) bond length is 1.49 Å. The C(7)-O(3) bond length is 1.28 Å. The C(7)-O(4) bond length is 1.27 Å. In the tenth C site, C(8) is bonded in a trigonal planar geometry to one C(10), one C(7), and one C(9) atom. The C(8)-C(10) bond length is 1.40 Å. The C(8)-C(9) bond length is 1.40 Å. In the eleventh C site, C(9) is bonded in a distorted single-bond geometry to one C(8) and one H(3) atom. The C(9)-H(3) bond length is 1.09 Å. In the twelfth C site, C(10) is bonded in a distorted single-bond geometry to one C(8) and one H(4) atom. The C(10)-H(4) bond length is 1.09 Å. In the thirteenth C site, C(11) is bonded in a trigonal planar geometry to one N(1), one H(5), and one O(5) atom. The C(11)-N(1) bond length is 1.33 Å. The C(11)-H(5) bond length is 1.10 Å. The C(11)-O(5) bond length is 1.26 Å. N(1) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(13) atom. There are eleven 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(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(9) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(10) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(11) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(12) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(12) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(12) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(13) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(13) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(13) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Np(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Np(1) and one C(6) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Np(1) and one C(7) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Np(1) and one C(7) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Np(1) and one C(11) atom. Linkers: 2 [O]C(=O)c1ccc(C([O])=O)cc1. Metal clusters: 2 [Np]. The MOF has largest included sphere 2.03 A, density 2.05 g/cm3, surface area 3514.52 m2/g, accessible volume 0.12 cm3/g