Cd2C17H6O10 crystallizes in the monoclinic C2/c space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(10), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form distorted corner-sharing CdO6 pentagonal pyramids. The Cd(1)-O(10) bond length is 2.66 Å. The Cd(1)-O(3) bond length is 2.29 Å. The Cd(1)-O(4) bond length is 2.64 Å. The Cd(1)-O(5) bond length is 2.31 Å. The Cd(1)-O(7) bond length is 2.31 Å. The Cd(1)-O(8) bond length is 2.27 Å. In the second Cd site, Cd(2) is bonded to one O(1), one O(2), one O(4), one O(6), and one O(9) atom to form distorted corner-sharing CdO5 square pyramids. The Cd(2)-O(1) bond length is 2.25 Å. The Cd(2)-O(2) bond length is 2.30 Å. The Cd(2)-O(4) bond length is 2.27 Å. The Cd(2)-O(6) bond length is 2.47 Å. The Cd(2)-O(9) bond length is 2.28 Å. There are seventeen inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(3), and one O(4) atom. The C(1)-C(7) bond length is 1.51 Å. The C(1)-O(3) bond length is 1.27 Å. The C(1)-O(4) bond length is 1.25 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(5), one C(6), and one H(1) atom. The C(2)-C(5) bond length is 1.39 Å. The C(2)-C(6) bond length is 1.38 Å. The C(2)-H(1) bond length is 0.93 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(14), one C(6), and one C(7) atom. The C(3)-C(14) bond length is 1.40 Å. The C(3)-C(6) bond length is 1.50 Å. The C(3)-C(7) bond length is 1.41 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(10), one C(5), and one H(2) atom. The C(4)-C(10) bond length is 1.37 Å. The C(4)-C(5) bond length is 1.39 Å. The C(4)-H(2) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(13), one C(2), and one C(4) atom. The C(5)-C(13) bond length is 1.51 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(2), one C(3), and one C(9) atom. The C(6)-C(9) bond length is 1.40 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(8) atom. The C(7)-C(8) bond length is 1.40 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(12), one C(7), and one H(3) atom. The C(8)-C(12) bond length is 1.39 Å. The C(8)-H(3) bond length is 0.93 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(10), one C(6), and one H(4) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-H(4) bond length is 0.93 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(4), and one C(9) atom. The C(10)-C(11) bond length is 1.51 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(7), and one O(8) atom. The C(11)-O(7) bond length is 1.24 Å. The C(11)-O(8) bond length is 1.27 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(15), one C(17), and one C(8) atom. The C(12)-C(15) bond length is 1.39 Å. The C(12)-C(17) bond length is 1.50 Å. In the thirteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(6), and one O(9) atom. The C(13)-O(6) bond length is 1.26 Å. The C(13)-O(9) bond length is 1.26 Å. In the fourteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(3) and one H(5,6) atom. The C(14)-H(5,6) bond length is 0.93 Å. In the fifteenth C site, C(15) is bonded in a distorted single-bond geometry to one C(12) and one H(5,6) atom. The C(15)-H(5,6) bond length is 0.93 Å. In the sixteenth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(16)-O(1) bond length is 1.25 Å. The C(16)-O(2) bond length is 1.25 Å. In the seventeenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(12), one O(10), and one O(5) atom. The C(17)-O(10) bond length is 1.26 Å. The C(17)-O(5) bond length is 1.29 Å. There are five 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(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(8) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(9) atom. In the fifth H site, H(5,6) is bonded in a single-bond geometry to one C(14) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Cd(2) and one C(16) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cd(2) and one C(16) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one Cd(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Cd(1), one Cd(2), and one C(1) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one Cd(1) and one C(17) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Cd(2) and one C(13) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one C(11) atom. In the eighth O site, O(8) is bonded in a distorted water-like geometry to one Cd(1) and one C(11) atom. In the ninth O site, O(9) is bonded in a distorted L-shaped geometry to one Cd(2) and one C(13) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one Cd(1) and one C(17) atom. Linkers: 8 [O]C(=O)c1cc(C([O])=O)cc(-c2ccc(C([O])=O)cc2C([O])=O)c1 ,4 [O]C(=O)C([O])=O. Metal clusters: 16 [Cd]. The MOF has largest included sphere 4.28 A, density 1.88 g/cm3, surface area 3313.65 m2/g, accessible volume 0.23 cm3/g