CdC15H10O7 crystallizes in the monoclinic P2_1/c space group. Cd(1) is bonded to one O(2), one O(3), one O(5), one O(6), one O(7), and two equivalent O(4) atoms to form distorted edge-sharing CdO7 pentagonal bipyramids. The Cd(1)-O(2) bond length is 2.50 Å. The Cd(1)-O(3) bond length is 2.30 Å. The Cd(1)-O(5) bond length is 2.43 Å. The Cd(1)-O(6) bond length is 2.46 Å. The Cd(1)-O(7) bond length is 2.32 Å. Both Cd(1)-O(4) bond lengths are 2.40 Å. There are fifteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(13), one C(2), and one H(1) atom. The C(1)-C(13) bond length is 1.38 Å. The C(1)-C(2) bond length is 1.40 Å. The C(1)-H(1) bond length is 1.09 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(14), and one C(3) atom. The C(2)-C(14) bond length is 1.49 Å. The C(2)-C(3) bond length is 1.41 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(2) atom. The C(3)-H(2) bond length is 1.09 Å. In the fourth 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 1.39 Å. The C(4)-H(3) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(13), one C(4), and one C(6) atom. The C(5)-C(13) bond length is 1.42 Å. The C(5)-C(6) bond length is 1.47 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(11), one C(5), and one C(7) atom. The C(6)-C(11) bond length is 1.42 Å. The C(6)-C(7) bond length is 1.39 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(6), one C(8), and one H(4) atom. The C(7)-C(8) bond length is 1.40 Å. The C(7)-H(4) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(7), one C(9), and one H(5) atom. The C(8)-C(9) bond length is 1.41 Å. The C(8)-H(5) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(15), and one C(8) atom. The C(9)-C(10) bond length is 1.41 Å. The C(9)-C(15) bond length is 1.48 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(11), one C(9), and one H(6) atom. The C(10)-C(11) bond length is 1.38 Å. The C(10)-H(6) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(6) atom. The C(11)-C(12) bond length is 1.49 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(13), and one O(1) atom. The C(12)-C(13) bond length is 1.49 Å. The C(12)-O(1) bond length is 1.23 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one C(1), one C(12), and one C(5) atom. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(2), and one O(3) atom. The C(14)-O(2) bond length is 1.28 Å. The C(14)-O(3) bond length is 1.28 Å. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(4), and one O(5) atom. The C(15)-O(4) bond length is 1.28 Å. The C(15)-O(5) bond length is 1.28 Å. There are ten 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) 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(4) 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(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(10) atom. In the seventh H site, H(7) is bonded in a distorted single-bond geometry to one O(5) and one O(6) atom. The H(7)-O(5) bond length is 1.65 Å. The H(7)-O(6) bond length is 1.01 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(6) atom. The H(8)-O(6) bond length is 0.97 Å. In the ninth H site, H(9) is bonded in a distorted single-bond geometry to one O(2) and one O(7) atom. The H(9)-O(2) bond length is 1.64 Å. The H(9)-O(7) bond length is 1.00 Å. In the tenth H site, H(10) is bonded in a single-bond geometry to one O(7) atom. The H(10)-O(7) bond length is 0.99 Å. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a distorted water-like geometry to one Cd(1), one H(10), and one H(9) atom. In the second O site, O(1) is bonded in a single-bond geometry to one C(12) atom. In the third O site, O(2) is bonded in a 3-coordinate geometry to one Cd(1), one C(14), and one H(9) atom. In the fourth O site, O(3) is bonded in a distorted L-shaped geometry to one Cd(1) and one C(14) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Cd(1) and one C(15) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to one Cd(1), one C(15), and one H(7) atom. In the seventh O site, O(6) is bonded in a water-like geometry to one Cd(1), one H(7), and one H(8) atom. Linkers: 4 [O]C(=O)c1ccc2c(c1)C(=O)c1cc(C([O])=O)ccc1-2. Metal clusters: 2 O.O.O.O.O=[C]O[Cd]1O[C]O1.O=[C]O[Cd]1O[C]O1. RCSR code: sql. The MOF has largest included sphere 2.09 A, density 2.02 g/cm3, surface area 3448.80 m2/g, accessible volume 0.10 cm3/g