BaC8H10(NO2)4 crystallizes in the triclinic P-1 space group. Ba(1) is bonded in a 9-coordinate geometry to one O(1), one O(4), one O(7), two equivalent O(2), two equivalent O(5), and two equivalent O(8) atoms. The Ba(1)-O(1) bond length is 2.82 Å. The Ba(1)-O(4) bond length is 2.90 Å. The Ba(1)-O(7) bond length is 2.72 Å. There is one shorter (2.87 Å) and one longer (2.91 Å) Ba(1)-O(2) bond length. There is one shorter (2.87 Å) and one longer (2.89 Å) Ba(1)-O(5) bond length. There is one shorter (2.76 Å) and one longer (3.03 Å) Ba(1)-O(8) bond length. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(4), one N(1), and one O(1) atom. The C(1)-C(4) bond length is 1.41 Å. The C(1)-N(1) bond length is 1.40 Å. The C(1)-O(1) bond length is 1.28 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one N(1), one N(2), and one O(2) atom. The C(2)-N(1) bond length is 1.36 Å. The C(2)-N(2) bond length is 1.36 Å. The C(2)-O(2) bond length is 1.26 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(4), one N(2), and one O(3) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-N(2) bond length is 1.39 Å. The C(3)-O(3) bond length is 1.29 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(3) atom. The C(4)-H(3) bond length is 1.08 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(8), one N(3), and one O(4) atom. The C(5)-C(8) bond length is 1.40 Å. The C(5)-N(3) bond length is 1.40 Å. The C(5)-O(4) bond length is 1.28 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one N(3), one N(4), and one O(5) atom. The C(6)-N(3) bond length is 1.36 Å. The C(6)-N(4) bond length is 1.36 Å. The C(6)-O(5) bond length is 1.26 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(8), one N(4), and one O(6) atom. The C(7)-C(8) bond length is 1.39 Å. The C(7)-N(4) bond length is 1.40 Å. The C(7)-O(6) bond length is 1.29 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(5), one C(7), and one H(4) atom. The C(8)-H(4) bond length is 1.08 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one C(1), one C(2), and one H(2) atom. The N(1)-H(2) bond length is 1.05 Å. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(2), one C(3), and one H(1) atom. The N(2)-H(1) bond length is 1.05 Å. In the third N site, N(3) is bonded in a trigonal planar geometry to one C(5), one C(6), and one H(5) atom. The N(3)-H(5) bond length is 1.05 Å. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one C(6), one C(7), and one H(6) atom. The N(4)-H(6) bond length is 1.05 Å. There are ten inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one N(2) and one O(4) atom. The H(1)-O(4) bond length is 1.65 Å. In the second H site, H(2) is bonded in a distorted single-bond geometry to one N(1) and one O(1) atom. The H(2)-O(1) bond length is 1.68 Å. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) 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 N(3) atom. In the sixth H site, H(6) is bonded in a distorted linear geometry to one N(4) and one O(6) atom. The H(6)-O(6) bond length is 1.69 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(7) atom. The H(7)-O(7) bond length is 0.99 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(7) atom. The H(8)-O(7) bond length is 0.99 Å. In the ninth H site, H(9) is bonded in a distorted single-bond geometry to one O(8) atom. The H(9)-O(8) bond length is 1.00 Å. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(8) atom. The H(10)-O(8) bond length is 0.99 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Ba(1), one C(1), and one H(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to two equivalent Ba(1) and one C(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one C(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Ba(1), one C(5), and one H(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Ba(1) and one C(6) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one C(7) and one H(6) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one Ba(1), one H(7), and one H(8) atom. In the eighth O site, O(8) is bonded in a water-like geometry to two equivalent Ba(1), one H(10), and one H(9) atom. Linkers: 4 O=C1[CH]C(=O)NC(=O)N1. Metal clusters: 2 [Ba]. The MOF has largest included sphere 2.13 A, density 2.32 g/cm3, surface area 2942.47 m2/g, accessible volume 0.08 cm3/g