RbC7H3(NO3)2 crystallizes in the triclinic P-1 space group. Rb(1) is bonded to one O(3), one O(4), one O(5), one O(6), two equivalent O(1), and two equivalent O(2) atoms to form distorted edge-sharing RbO8 hexagonal bipyramids. The Rb(1)-O(3) bond length is 3.11 Å. The Rb(1)-O(4) bond length is 3.11 Å. The Rb(1)-O(5) bond length is 3.16 Å. The Rb(1)-O(6) bond length is 3.17 Å. There is one shorter (2.78 Å) and one longer (2.95 Å) Rb(1)-O(1) bond length. There is one shorter (2.78 Å) and one longer (2.95 Å) Rb(1)-O(2) bond length. There are six inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(2), one C(3), and one H(1) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-C(3) bond length is 1.39 Å. The C(1)-H(1) bond length is 1.09 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1); one C(4,5); and one N(1,2) atom. The C(2)-C(4,5) bond length is 1.40 Å. The C(2)-N(1,2) bond length is 1.47 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(1); one C(4,5); and one N(1,2) atom. The C(3)-C(4,5) bond length is 1.40 Å. The C(3)-N(1,2) bond length is 1.47 Å. In the fourth C site, C(4,5) is bonded in a distorted single-bond geometry to one C(2); one C(6); and one H(2,3) atom. The C(4,5)-C(6) bond length is 1.40 Å. The C(4,5)-H(2,3) bond length is 1.09 Å. In the fifth C site, C(6) is bonded in a trigonal planar geometry to one C(7) and two equivalent C(4,5) atoms. The C(6)-C(7) bond length is 1.52 Å. In the sixth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.27 Å. The C(7)-O(2) bond length is 1.27 Å. N(1,2) is bonded in a trigonal planar geometry to one C(2), one O(3), and one O(5) atom. The N(1,2)-O(3) bond length is 1.24 Å. The N(1,2)-O(5) bond length is 1.24 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2,3) is bonded in a single-bond geometry to one C(4,5) atom. There are six inequivalent O sites. In the first O site, O(5) is bonded in a single-bond geometry to one Rb(1) and one N(1,2) atom. In the second O site, O(6) is bonded in a single-bond geometry to one Rb(1) and one N(1,2) atom. The O(6)-N(1,2) bond length is 1.24 Å. In the third O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one C(7) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one C(7) atom. In the fifth O site, O(3) is bonded in a single-bond geometry to one Rb(1) and one N(1,2) atom. In the sixth O site, O(4) is bonded in a single-bond geometry to one Rb(1) and one N(1,2) atom. The O(4)-N(1,2) bond length is 1.24 Å. Linkers: 2 [O]C(=O)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1. Metal clusters: 2 [Rb]. The MOF has largest included sphere 1.71 A, density 2.03 g/cm3, surface area 3406.91 m2/g, accessible volume 0.10 cm3/g