KC9N16H11O5 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 7-coordinate geometry to one N(2), one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms. The K(1)-N(2) bond length is 2.88 Å. The K(1)-O(2) bond length is 3.10 Å. The K(1)-O(3) bond length is 2.87 Å. The K(1)-O(4) bond length is 2.71 Å. The K(1)-O(5) bond length is 2.77 Å. There is one shorter (2.79 Å) and one longer (2.87 Å) K(1)-O(1) bond length. There are nine inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one N(1), one N(3), and one O(1) atom. The C(1)-N(1) bond length is 1.36 Å. The C(1)-N(3) bond length is 1.43 Å. The C(1)-O(1) bond length is 1.24 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one N(2), one N(3), and one H(1) atom. The C(2)-N(2) bond length is 1.30 Å. The C(2)-N(3) bond length is 1.39 Å. The C(2)-H(1) bond length is 1.08 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one N(6), one N(7), and one O(2) atom. The C(3)-N(6) bond length is 1.43 Å. The C(3)-N(7) bond length is 1.37 Å. The C(3)-O(2) bond length is 1.23 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one N(6), one N(8), and one H(2) atom. The C(4)-N(6) bond length is 1.39 Å. The C(4)-N(8) bond length is 1.31 Å. The C(4)-H(2) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one N(11), one N(9), and one O(3) atom. The C(5)-N(11) bond length is 1.43 Å. The C(5)-N(9) bond length is 1.35 Å. The C(5)-O(3) bond length is 1.26 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one N(10), one N(11), and one H(3) atom. The C(6)-N(10) bond length is 1.31 Å. The C(6)-N(11) bond length is 1.38 Å. The C(6)-H(3) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one N(13), one N(15), and one O(4) atom. The C(7)-N(13) bond length is 1.35 Å. The C(7)-N(15) bond length is 1.41 Å. The C(7)-O(4) bond length is 1.24 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one N(14), one N(15), and one H(4) atom. The C(8)-N(14) bond length is 1.31 Å. The C(8)-N(15) bond length is 1.39 Å. The C(8)-H(4) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a tetrahedral geometry to one H(5), one H(6), one H(7), and one O(5) atom. The C(9)-H(5) bond length is 1.10 Å. The C(9)-H(6) bond length is 1.10 Å. The C(9)-H(7) bond length is 1.10 Å. The C(9)-O(5) bond length is 1.43 Å. There are sixteen inequivalent N sites. In the first N site, N(1) is bonded in a 2-coordinate geometry to one C(1), one N(2), and one H(10) atom. The N(1)-N(2) bond length is 1.38 Å. The N(1)-H(10) bond length is 1.08 Å. In the second N site, N(2) is bonded in a distorted single-bond geometry to one K(1), one C(2), and one N(1) atom. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one C(1), one C(2), and one N(4) atom. The N(3)-N(4) bond length is 1.36 Å. In the fourth N site, N(4) is bonded in a water-like geometry to one N(3) and one N(5) atom. The N(4)-N(5) bond length is 1.26 Å. In the fifth N site, N(5) is bonded in a bent 120 degrees geometry to one N(4) and one N(6) atom. The N(5)-N(6) bond length is 1.35 Å. In the sixth N site, N(6) is bonded in a distorted trigonal planar geometry to one C(3), one C(4), and one N(5) atom. In the seventh N site, N(7) is bonded in a 2-coordinate geometry to one C(3), one N(8), and one H(9) atom. The N(7)-N(8) bond length is 1.37 Å. The N(7)-H(9) bond length is 1.04 Å. In the eighth N site, N(8) is bonded in a distorted water-like geometry to one C(4) and one N(7) atom. In the ninth N site, N(9) is bonded in a distorted trigonal planar geometry to one C(5), one N(10), and one H(10) atom. The N(9)-N(10) bond length is 1.39 Å. The N(9)-H(10) bond length is 1.63 Å. In the tenth N site, N(10) is bonded in a distorted trigonal planar geometry to one C(6), one N(9), and one H(11) atom. The N(10)-H(11) bond length is 1.72 Å. In the eleventh N site, N(11) is bonded in a distorted water-like geometry to one C(5), one C(6), and one N(12) atom. The N(11)-N(12) bond length is 1.36 Å. In the twelfth N site, N(12) is bonded in a water-like geometry to one N(11) and one N(12) atom. The N(12)-N(12) bond length is 1.26 Å. In the thirteenth N site, N(13) is bonded in a distorted bent 120 degrees geometry to one C(7), one N(14), and one H(8) atom. The N(13)-N(14) bond length is 1.37 Å. The N(13)-H(8) bond length is 1.05 Å. In the fourteenth N site, N(14) is bonded in a distorted water-like geometry to one C(8) and one N(13) atom. In the fifteenth N site, N(15) is bonded in a distorted trigonal planar geometry to one C(7), one C(8), and one N(16) atom. The N(15)-N(16) bond length is 1.36 Å. In the sixteenth N site, N(16) is bonded in a water-like geometry to one N(15) and one N(16) atom. The N(16)-N(16) bond length is 1.26 Å. There are eleven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) 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(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(8) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(9) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(9) 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 distorted single-bond geometry to one N(13) atom. In the ninth H site, H(9) is bonded in a distorted single-bond geometry to one N(7) and one O(4) atom. The H(9)-O(4) bond length is 1.70 Å. In the tenth H site, H(10) is bonded in a distorted linear geometry to one N(1) and one N(9) atom. In the eleventh H site, H(11) is bonded in a distorted single-bond geometry to one N(10) and one O(5) atom. The H(11)-O(5) bond length is 1.01 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one C(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one K(1) and one C(3) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1) and one C(5) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one C(7), and one H(9) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one K(1), one C(9), and one H(11) atom. Linkers: 3 O=c1[nH]ncn1[N][N]n1cn[nH]c1=O ,1 O=C1[N]N=CN1[N][N]N1C=N[N]C1=O. Metal clusters: 2 [K]. The MOF has largest included sphere 2.56 A, density 1.70 g/cm3, surface area 3730.39 m2/g, accessible volume 0.13 cm3/g