RbC6NH5O6CH crystallizes in the monoclinic P2_1/c space group. The structure consists of four 02329_fluka molecules inside a RbC6NH5O6 framework. In the RbC6NH5O6 framework, Rb(1) is bonded in a 8-coordinate geometry to one H(1), one O(2), one O(3), one O(4), one O(5), one O(6), and two equivalent O(1) atoms. The Rb(1)-H(1) bond length is 3.10 Å. The Rb(1)-O(2) bond length is 3.03 Å. The Rb(1)-O(3) bond length is 3.03 Å. The Rb(1)-O(4) bond length is 3.04 Å. The Rb(1)-O(5) bond length is 3.14 Å. The Rb(1)-O(6) bond length is 3.10 Å. There is one shorter (3.00 Å) and one longer (3.22 Å) Rb(1)-O(1) bond length. There are six inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(7) atom. The C(1)-C(2) bond length is 1.43 Å. The C(1)-C(6) bond length is 1.39 Å. The C(1)-C(7) bond length is 1.50 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one O(2) atom. The C(2)-O(2) bond length is 1.33 Å. In the third C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one H(3) atom. The C(4)-C(5) bond length is 1.41 Å. The C(4)-H(3) bond length is 1.09 Å. In the fourth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one C(6), and one N(1) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-N(1) bond length is 1.44 Å. In the fifth C site, C(6) is bonded in a distorted single-bond geometry to one C(1), one C(5), and one H(4) atom. The C(6)-H(4) bond length is 1.09 Å. In the sixth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(3), and one O(4) atom. The C(7)-O(3) bond length is 1.25 Å. The C(7)-O(4) bond length is 1.31 Å. N(1) is bonded in a trigonal planar geometry to one C(5), one O(5), and one O(6) atom. The N(1)-O(5) bond length is 1.25 Å. The N(1)-O(6) bond length is 1.25 Å. There are five inequivalent H sites. In the first H site, H(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one O(2), and one O(4) atom. The H(1)-O(2) bond length is 1.07 Å. The H(1)-O(4) bond length is 1.44 Å. In the second H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(4) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one O(1) atom. The H(5)-O(1) bond length is 0.99 Å. In the fifth H site, H(6) is bonded in a single-bond geometry to one O(1) atom. The H(6)-O(1) bond length is 0.99 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to two equivalent Rb(1), one H(5), and one H(6) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one Rb(1), one C(2), and one H(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Rb(1) and one C(7) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Rb(1), one C(7), and one H(1) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one Rb(1) and one N(1) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Rb(1) and one N(1) atom. Linkers: 4 [O]C(=O)c1cc([N+](=O)[O-])ccc1O. Metal clusters: 4 [Rb]. The MOF has largest included sphere 1.52 A, density 2.08 g/cm3, surface area 3433.42 m2/g, accessible volume 0.03 cm3/g