KC10H10(NO3)3 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), one O(8), and one O(9) atom. The K(1)-O(1) bond length is 2.81 Å. The K(1)-O(2) bond length is 2.70 Å. The K(1)-O(3) bond length is 2.71 Å. The K(1)-O(5) bond length is 2.86 Å. The K(1)-O(6) bond length is 2.97 Å. The K(1)-O(8) bond length is 2.71 Å. The K(1)-O(9) bond length is 2.77 Å. There are ten inequivalent C sites. In the first C site, C(1) is bonded in a distorted water-like geometry to one C(2), one C(6), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.52 Å. The C(1)-C(6) bond length is 1.52 Å. The C(1)-O(1) bond length is 1.44 Å. The C(1)-O(2) bond length is 1.43 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one C(3), and one N(1) atom. The C(2)-C(3) bond length is 1.37 Å. The C(2)-N(1) bond length is 1.43 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 1.41 Å. The C(3)-H(1) bond length is 1.09 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(2) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-N(2) bond length is 1.42 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one H(2) atom. The C(5)-C(6) bond length is 1.37 Å. The C(5)-H(2) bond length is 1.08 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(1), one C(5), and one N(3) atom. The C(6)-N(3) bond length is 1.43 Å. In the seventh C site, C(7) is bonded in a distorted trigonal non-coplanar geometry to one H(3), one H(4), and one O(1) atom. The C(7)-H(3) bond length is 1.10 Å. The C(7)-H(4) bond length is 1.10 Å. The C(7)-O(1) bond length is 1.44 Å. In the eighth C site, C(8) is bonded in a distorted trigonal non-coplanar geometry to one H(5), one H(6), and one O(2) atom. The C(8)-H(5) bond length is 1.10 Å. The C(8)-H(6) bond length is 1.10 Å. The C(8)-O(2) bond length is 1.44 Å. In the ninth C site, C(9) is bonded in a distorted trigonal non-coplanar geometry to one H(7), one H(8), and one O(9) atom. The C(9)-H(7) bond length is 1.10 Å. The C(9)-H(8) bond length is 1.10 Å. The C(9)-O(9) bond length is 1.44 Å. In the tenth C site, C(10) is bonded in a distorted trigonal non-coplanar geometry to one H(10), one H(9), and one O(9) atom. The C(10)-H(10) bond length is 1.10 Å. The C(10)-H(9) bond length is 1.11 Å. The C(10)-O(9) bond length is 1.44 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one C(2), one O(3), and one O(4) atom. The N(1)-O(3) bond length is 1.25 Å. The N(1)-O(4) bond length is 1.25 Å. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(4), one O(5), and one O(6) atom. The N(2)-O(5) bond length is 1.26 Å. The N(2)-O(6) bond length is 1.26 Å. In the third N site, N(3) is bonded in a trigonal planar geometry to one C(6), one O(7), and one O(8) atom. The N(3)-O(7) bond length is 1.25 Å. The N(3)-O(8) bond length is 1.25 Å. There are ten 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(5) 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(7) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(8) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(9) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(9) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(10) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(10) atom. There are nine inequivalent O sites. In the first O site, O(9) is bonded in a distorted water-like geometry to one K(1), one C(10), and one C(9) atom. In the second O site, O(1) is bonded in a distorted water-like geometry to one K(1), one C(1), and one C(7) atom. In the third O site, O(2) is bonded in a distorted water-like geometry to one K(1), one C(1), and one C(8) atom. In the fourth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one K(1) and one N(1) atom. In the fifth O site, O(4) is bonded in a single-bond geometry to one N(1) atom. In the sixth O site, O(5) is bonded in a distorted single-bond geometry to one K(1) and one N(2) atom. In the seventh O site, O(6) is bonded in a single-bond geometry to one K(1) and one N(2) atom. In the eighth O site, O(7) is bonded in a single-bond geometry to one N(3) atom. In the ninth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one K(1) and one N(3) atom. Linkers: 4 O=[N+]([O-])[C]1C=C([N+](=O)[O-])C2(OCCO2)C([N+](=O)[O-])=C1 ,2 C1COCCO1. Metal clusters: 4 [K]. The MOF has largest included sphere 1.97 A, density 1.72 g/cm3, surface area 3299.13 m2/g, accessible volume 0.08 cm3/g