K2C7H9O10(CH)5 crystallizes in the triclinic P1 space group. The structure consists of ten 02329_fluka molecules inside a K2C7H9O10 framework. In the K2C7H9O10 framework, there are four inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to one H(11), one H(24), one H(9), one O(1), one O(10), one O(12), one O(14), one O(17), and one O(5) atom. The K(1)-H(11) bond length is 2.94 Å. The K(1)-H(24) bond length is 2.96 Å. The K(1)-H(9) bond length is 2.73 Å. The K(1)-O(1) bond length is 2.75 Å. The K(1)-O(10) bond length is 2.87 Å. The K(1)-O(12) bond length is 2.85 Å. The K(1)-O(14) bond length is 2.73 Å. The K(1)-O(17) bond length is 3.05 Å. The K(1)-O(5) bond length is 2.72 Å. In the second K site, K(2) is bonded in a 9-coordinate geometry to one H(10), one H(12), one H(23), one O(11), one O(13), one O(18), one O(2), one O(6), and one O(9) atom. The K(2)-H(10) bond length is 2.73 Å. The K(2)-H(12) bond length is 2.93 Å. The K(2)-H(23) bond length is 2.96 Å. The K(2)-O(11) bond length is 2.85 Å. The K(2)-O(13) bond length is 2.73 Å. The K(2)-O(18) bond length is 3.05 Å. The K(2)-O(2) bond length is 2.75 Å. The K(2)-O(6) bond length is 2.71 Å. The K(2)-O(9) bond length is 2.87 Å. In the third K site, K(3) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(14), one O(17), one O(20), one O(5), and one O(8) atom. The K(3)-O(1) bond length is 3.00 Å. The K(3)-O(10) bond length is 2.70 Å. The K(3)-O(14) bond length is 2.85 Å. The K(3)-O(17) bond length is 3.26 Å. The K(3)-O(20) bond length is 2.82 Å. The K(3)-O(5) bond length is 2.84 Å. The K(3)-O(8) bond length is 2.66 Å. In the fourth K site, K(4) is bonded in a 7-coordinate geometry to one O(13), one O(18), one O(19), one O(2), one O(6), one O(7), and one O(9) atom. The K(4)-O(13) bond length is 2.85 Å. The K(4)-O(18) bond length is 3.26 Å. The K(4)-O(19) bond length is 2.82 Å. The K(4)-O(2) bond length is 3.00 Å. The K(4)-O(6) bond length is 2.84 Å. The K(4)-O(7) bond length is 2.66 Å. The K(4)-O(9) bond length is 2.70 Å. There are nine inequivalent C sites. In the first C site, C(11) is bonded in a distorted single-bond geometry to one C(21,22) and one H(23) atom. The C(11)-C(21,22) bond length is 1.50 Å. The C(11)-H(23) bond length is 1.10 Å. In the second C site, C(12) is bonded in a distorted single-bond geometry to one C(21,22) and one H(24) atom. The C(12)-C(21,22) bond length is 1.50 Å. The C(12)-H(24) bond length is 1.10 Å. In the third C site, C(13,14) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(3) atom. The C(13,14)-O(1) bond length is 1.25 Å. The C(13,14)-O(3) bond length is 1.31 Å. In the fourth C site, C(15,16) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(7) atom. The C(15,16)-O(5) bond length is 1.25 Å. The C(15,16)-O(7) bond length is 1.30 Å. In the fifth C site, C(17,18) is bonded in a distorted bent 120 degrees geometry to one O(11) and one O(9) atom. The C(17,18)-O(11) bond length is 1.30 Å. The C(17,18)-O(9) bond length is 1.25 Å. In the sixth C site, C(19,20) is bonded in a distorted bent 120 degrees geometry to one O(13) and one O(15,16) atom. The C(19,20)-O(13) bond length is 1.25 Å. The C(19,20)-O(15,16) bond length is 1.31 Å. In the seventh C site, C(21,22) is bonded in a distorted trigonal planar geometry to one C(11), one C(23), and one H(25) atom. The C(21,22)-C(23) bond length is 1.34 Å. The C(21,22)-H(25) bond length is 1.09 Å. In the eighth C site, C(23) is bonded in a distorted single-bond geometry to one C(21,22) and one H(27,28) atom. The C(23)-H(27,28) bond length is 1.09 Å. In the ninth C site, C(24) is bonded in a distorted single-bond geometry to one C(21,22) and one H(27,28) atom. The C(24)-C(21,22) bond length is 1.34 Å. The C(24)-H(27,28) bond length is 1.09 Å. There are fourteen inequivalent H sites. In the first H site, H(1,2) is bonded in a linear geometry to one O(3) and one O(8) atom. The H(1,2)-O(3) bond length is 1.21 Å. The H(1,2)-O(8) bond length is 1.20 Å. In the second H site, H(3,4) is bonded in a linear geometry to one O(12) and one O(15,16) atom. The H(3,4)-O(12) bond length is 1.37 Å. The H(3,4)-O(15,16) bond length is 1.10 Å. In the third H site, H(5,6) is bonded in a single-bond geometry to one O(17) atom. The H(5,6)-O(17) bond length is 1.00 Å. In the fourth H site, H(7) is bonded in a single-bond geometry to one O(17) atom. The H(7)-O(17) bond length is 0.99 Å. In the fifth H site, H(8) is bonded in a single-bond geometry to one O(18) atom. The H(8)-O(18) bond length is 0.99 Å. In the sixth H site, H(9) is bonded in a single-bond geometry to one K(1) and one O(19) atom. The H(9)-O(19) bond length is 1.00 Å. In the seventh H site, H(10) is bonded in a single-bond geometry to one K(2) and one O(20) atom. The H(10)-O(20) bond length is 1.00 Å. In the eighth H site, H(11) is bonded in a single-bond geometry to one K(1) and one O(19) atom. The H(11)-O(19) bond length is 0.98 Å. In the ninth H site, H(12) is bonded in a single-bond geometry to one K(2) and one O(20) atom. The H(12)-O(20) bond length is 0.98 Å. In the tenth H site, H(23) is bonded in a single-bond geometry to one K(2) and one C(11) atom. In the eleventh H site, H(24) is bonded in a single-bond geometry to one K(1) and one C(12) atom. In the twelfth H site, H(25) is bonded in a single-bond geometry to one C(21,22) atom. In the thirteenth H site, H(26) is bonded in a single-bond geometry to one C(21,22) atom. The H(26)-C(21,22) bond length is 1.09 Å. In the fourteenth H site, H(27,28) is bonded in a single-bond geometry to one C(23) atom. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(1); one K(3); and one C(13,14) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(2); one K(4); and one C(13,14) atom. The O(2)-C(13,14) bond length is 1.25 Å. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one C(13,14) and one H(1,2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one C(13,14) and one H(1,2) atom. The O(4)-C(13,14) bond length is 1.31 Å. The O(4)-H(1,2) bond length is 1.21 Å. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1); one K(3); and one C(15,16) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(2); one K(4); and one C(15,16) atom. The O(6)-C(15,16) bond length is 1.25 Å. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one K(4); one C(15,16); and one H(1,2) atom. The O(7)-H(1,2) bond length is 1.20 Å. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one K(3); one C(15,16); and one H(1,2) atom. The O(8)-C(15,16) bond length is 1.30 Å. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one K(2); one K(4); and one C(17,18) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one K(1); one K(3); and one C(17,18) atom. The O(10)-C(17,18) bond length is 1.25 Å. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one K(2); one C(17,18); and one H(3,4) atom. The O(11)-H(3,4) bond length is 1.37 Å. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one K(1); one C(17,18); and one H(3,4) atom. The O(12)-C(17,18) bond length is 1.30 Å. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one K(2); one K(4); and one C(19,20) atom. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one K(1); one K(3); and one C(19,20) atom. The O(14)-C(19,20) bond length is 1.25 Å. In the fifteenth O site, O(15,16) is bonded in a bent 120 degrees geometry to one C(19,20) and one H(3,4) atom. In the sixteenth O site, O(17) is bonded in a water-like geometry to one K(1); one K(3); one H(5,6); and one H(7) atom. In the seventeenth O site, O(18) is bonded in a water-like geometry to one K(2); one K(4); one H(5,6); and one H(8) atom. The O(18)-H(5,6) bond length is 1.00 Å. In the eighteenth O site, O(19) is bonded in a water-like geometry to one K(4), one H(11), and one H(9) atom. In the nineteenth O site, O(20) is bonded in a water-like geometry to one K(3), one H(10), and one H(12) atom. Linkers: 1 [O]C(=O)[C@@H]1[C@@H]2C=C[C@@H]([C@@H](C([O])=O)[C@H]2C(=O)O)[C@@H]1C(=O)O ,1 [O]C(=O)[C@H]1[C@H]2C=C[C@@H]([C@H]1C(=O)O)[C@H](C([O])=O)[C@@H]2C(=O)O. Metal clusters: 4 [K]. The MOF has largest included sphere 2.28 A, density 1.75 g/cm3, surface area 2071.39 m2/g, accessible volume 0.04 cm3/g