KCd2BC8H6O13 crystallizes in the monoclinic Pc space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(25), and one O(9) atom. The K(1)-O(10) bond length is 3.02 Å. The K(1)-O(11) bond length is 3.00 Å. The K(1)-O(12) bond length is 2.90 Å. The K(1)-O(13) bond length is 2.79 Å. The K(1)-O(25) bond length is 2.64 Å. The K(1)-O(9) bond length is 2.99 Å. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(21), one O(22), one O(24), one O(26), and one O(6) atom. The K(2)-O(21) bond length is 2.97 Å. The K(2)-O(22) bond length is 3.03 Å. The K(2)-O(24) bond length is 2.93 Å. The K(2)-O(26) bond length is 2.64 Å. The K(2)-O(6) bond length is 3.09 Å. There are four inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 6-coordinate geometry to one O(15), one O(17), one O(19), one O(22), one O(23), and one O(3) atom. The Cd(1)-O(15) bond length is 2.23 Å. The Cd(1)-O(17) bond length is 2.19 Å. The Cd(1)-O(19) bond length is 2.35 Å. The Cd(1)-O(22) bond length is 2.44 Å. The Cd(1)-O(23) bond length is 2.59 Å. The Cd(1)-O(3) bond length is 2.26 Å. In the second Cd site, Cd(2) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(12), one O(20), one O(4), and one O(8) atom. The Cd(2)-O(1) bond length is 2.20 Å. The Cd(2)-O(10) bond length is 2.61 Å. The Cd(2)-O(12) bond length is 2.42 Å. The Cd(2)-O(20) bond length is 2.26 Å. The Cd(2)-O(4) bond length is 2.35 Å. The Cd(2)-O(8) bond length is 2.24 Å. In the third Cd site, Cd(3) is bonded in a 6-coordinate geometry to one O(14), one O(16), one O(18), one O(21), one O(24), and one O(6) atom. The Cd(3)-O(14) bond length is 2.25 Å. The Cd(3)-O(16) bond length is 2.33 Å. The Cd(3)-O(18) bond length is 2.26 Å. The Cd(3)-O(21) bond length is 2.45 Å. The Cd(3)-O(24) bond length is 2.64 Å. The Cd(3)-O(6) bond length is 2.26 Å. In the fourth Cd site, Cd(4) is bonded in a 7-coordinate geometry to one O(11), one O(13), one O(14), one O(2), one O(5), one O(7), and one O(8) atom. The Cd(4)-O(11) bond length is 2.49 Å. The Cd(4)-O(13) bond length is 2.43 Å. The Cd(4)-O(14) bond length is 2.61 Å. The Cd(4)-O(2) bond length is 2.25 Å. The Cd(4)-O(5) bond length is 2.21 Å. The Cd(4)-O(7) bond length is 2.49 Å. The Cd(4)-O(8) bond length is 2.59 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a tetrahedral geometry to one O(10), one O(11), one O(12), and one O(9) atom. The B(1)-O(10) bond length is 1.48 Å. The B(1)-O(11) bond length is 1.48 Å. The B(1)-O(12) bond length is 1.49 Å. The B(1)-O(9) bond length is 1.47 Å. In the second B site, B(2) is bonded in a tetrahedral geometry to one O(21), one O(22), one O(23), and one O(24) atom. The B(2)-O(21) bond length is 1.48 Å. The B(2)-O(22) bond length is 1.49 Å. The B(2)-O(23) bond length is 1.47 Å. The B(2)-O(24) bond length is 1.49 Å. There are sixteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.27 Å. In the second C site, C(2) is bonded in a distorted water-like geometry to one H(1) and one O(11) atom. The C(2)-H(1) bond length is 1.10 Å. The C(2)-O(11) bond length is 1.42 Å. In the third C site, C(3) is bonded in a distorted water-like geometry to one H(2) and one O(12) atom. The C(3)-H(2) bond length is 1.10 Å. The C(3)-O(12) bond length is 1.42 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(4)-O(3) bond length is 1.28 Å. The C(4)-O(4) bond length is 1.27 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one O(5) and one O(6) atom. The C(5)-O(5) bond length is 1.27 Å. The C(5)-O(6) bond length is 1.27 Å. In the sixth C site, C(6) is bonded in a distorted water-like geometry to one H(3) and one O(9) atom. The C(6)-H(3) bond length is 1.10 Å. The C(6)-O(9) bond length is 1.42 Å. In the seventh C site, C(7) is bonded in a distorted water-like geometry to one H(4) and one O(10) atom. The C(7)-H(4) bond length is 1.10 Å. The C(7)-O(10) bond length is 1.42 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one O(7) and one O(8) atom. The C(8)-O(7) bond length is 1.26 Å. The C(8)-O(8) bond length is 1.29 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one O(13) and one O(14) atom. The C(9)-O(13) bond length is 1.26 Å. The C(9)-O(14) bond length is 1.28 Å. In the tenth C site, C(10) is bonded in a distorted water-like geometry to one H(5) and one O(24) atom. The C(10)-H(5) bond length is 1.10 Å. The C(10)-O(24) bond length is 1.43 Å. In the eleventh C site, C(11) is bonded in a distorted water-like geometry to one H(6) and one O(23) atom. The C(11)-H(6) bond length is 1.10 Å. The C(11)-O(23) bond length is 1.42 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one O(15) and one O(16) atom. The C(12)-O(15) bond length is 1.28 Å. The C(12)-O(16) bond length is 1.27 Å. In the thirteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one O(17) and one O(18) atom. The C(13)-O(17) bond length is 1.27 Å. The C(13)-O(18) bond length is 1.26 Å. In the fourteenth C site, C(14) is bonded in a distorted water-like geometry to one H(7) and one O(21) atom. The C(14)-H(7) bond length is 1.10 Å. The C(14)-O(21) bond length is 1.43 Å. In the fifteenth C site, C(15) is bonded in a distorted water-like geometry to one H(8) and one O(22) atom. The C(15)-H(8) bond length is 1.10 Å. The C(15)-O(22) bond length is 1.42 Å. In the sixteenth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one O(19) and one O(20) atom. The C(16)-O(19) bond length is 1.26 Å. The C(16)-O(20) bond length is 1.28 Å. There are twelve 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(3) 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(7) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(10) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(11) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(14) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(15) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(25) atom. The H(9)-O(25) bond length is 0.98 Å. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(25) atom. The H(10)-O(25) bond length is 0.98 Å. In the eleventh H site, H(11) is bonded in a single-bond geometry to one O(26) atom. The H(11)-O(26) bond length is 0.98 Å. In the twelfth H site, H(12) is bonded in a single-bond geometry to one O(26) atom. The H(12)-O(26) bond length is 0.98 Å. There are twenty-six inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cd(2) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cd(4) and one C(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one C(4) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Cd(2) and one C(4) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Cd(4) and one C(5) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(2), one Cd(3), and one C(5) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Cd(4) and one C(8) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Cd(2), one Cd(4), and one C(8) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one K(1), one B(1), and one C(6) atom. In the tenth O site, O(10) is bonded in a distorted water-like geometry to one K(1), one Cd(2), one B(1), and one C(7) atom. In the eleventh O site, O(11) is bonded in a distorted water-like geometry to one K(1), one Cd(4), one B(1), and one C(2) atom. In the twelfth O site, O(12) is bonded in a distorted water-like geometry to one K(1), one Cd(2), one B(1), and one C(3) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one K(1), one Cd(4), and one C(9) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Cd(3), one Cd(4), and one C(9) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one C(12) atom. In the sixteenth O site, O(16) is bonded in a distorted water-like geometry to one Cd(3) and one C(12) atom. In the seventeenth O site, O(17) is bonded in a bent 120 degrees geometry to one Cd(1) and one C(13) atom. In the eighteenth O site, O(18) is bonded in a distorted bent 120 degrees geometry to one Cd(3) and one C(13) atom. In the nineteenth O site, O(19) is bonded in a distorted single-bond geometry to one Cd(1) and one C(16) atom. In the twentieth O site, O(20) is bonded in a distorted bent 120 degrees geometry to one Cd(2) and one C(16) atom. In the twenty-first O site, O(21) is bonded in a distorted water-like geometry to one K(2), one Cd(3), one B(2), and one C(14) atom. In the twenty-second O site, O(22) is bonded in a distorted water-like geometry to one K(2), one Cd(1), one B(2), and one C(15) atom. In the twenty-third O site, O(23) is bonded in a distorted water-like geometry to one Cd(1), one B(2), and one C(11) atom. In the twenty-fourth O site, O(24) is bonded in a distorted water-like geometry to one K(2), one Cd(3), one B(2), and one C(10) atom. In the twenty-fifth O site, O(25) is bonded in a distorted water-like geometry to one K(1), one H(10), and one H(9) atom. In the twenty-sixth O site, O(26) is bonded in a distorted water-like geometry to one K(2), one H(11), and one H(12) atom. Linkers: 2 [O]C(=O)[C@@H]1O[B@]2(O[C@H]1C(=O)[O])O[C@H]([C@@H](O2)C(=O)[O])C(=O)[O] ,2 [O]C(=O)[C@H]1O[B@]2(O[C@@H]1C(=O)[O])O[C@@H]([C@H](O2)C(=O)[O])C(=O)[O]. Metal clusters: 4 [K] ,8 [Cd]. The MOF has largest included sphere 1.38 A, density 2.84 g/cm3, surface area 1628.17 m2/g, accessible volume 0.02 cm3/g