Cd3(C11O7)2 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted corner-sharing CdO6 octahedra. The Cd(1)-O(1) bond length is 2.31 Å. The Cd(1)-O(2) bond length is 2.42 Å. The Cd(1)-O(3) bond length is 2.34 Å. The Cd(1)-O(4) bond length is 2.21 Å. The Cd(1)-O(5) bond length is 2.39 Å. The Cd(1)-O(6) bond length is 2.23 Å. In the second Cd site, Cd(2) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(5), one O(7), one O(8), and one O(9) atom. The Cd(2)-O(10) bond length is 2.63 Å. The Cd(2)-O(11) bond length is 2.29 Å. The Cd(2)-O(5) bond length is 2.54 Å. The Cd(2)-O(7) bond length is 2.28 Å. The Cd(2)-O(8) bond length is 2.20 Å. The Cd(2)-O(9) bond length is 2.33 Å. In the third Cd site, Cd(3) is bonded to one O(12), one O(13), one O(14), one O(3), and one O(9) atom to form corner-sharing CdO5 square pyramids. The corner-sharing octahedral tilt angles are 72°. The Cd(3)-O(12) bond length is 2.26 Å. The Cd(3)-O(13) bond length is 2.23 Å. The Cd(3)-O(14) bond length is 2.23 Å. The Cd(3)-O(3) bond length is 2.30 Å. The Cd(3)-O(9) bond length is 2.36 Å. There are twenty-two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(13) atom. The C(1)-C(2) bond length is 1.51 Å. The C(1)-O(1) bond length is 1.24 Å. The C(1)-O(13) bond length is 1.26 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(15), and one C(5) atom. The C(2)-C(15) bond length is 1.40 Å. The C(2)-C(5) bond length is 1.39 Å. In the third C site, C(3) is bonded in a bent 120 degrees geometry to one C(4), one O(2), and one O(3) atom. The C(3)-C(4) bond length is 1.50 Å. The C(3)-O(2) bond length is 1.24 Å. The C(3)-O(3) bond length is 1.29 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(16), one C(3), and one C(5) atom. The C(4)-C(16) bond length is 1.39 Å. The C(4)-C(5) bond length is 1.40 Å. In the fifth C site, C(5) is bonded in a bent 120 degrees geometry to one C(2) and one C(4) atom. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(7), one O(11), and one O(5) atom. The C(6)-C(7) bond length is 1.50 Å. The C(6)-O(11) bond length is 1.26 Å. The C(6)-O(5) bond length is 1.27 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(12), one C(6), and one C(8) atom. The C(7)-C(12) bond length is 1.40 Å. The C(7)-C(8) bond length is 1.40 Å. In the eighth C site, C(8) is bonded in a bent 120 degrees geometry to one C(7) and one C(9) atom. The C(8)-C(9) bond length is 1.39 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(21), one C(22), and one C(8) atom. The C(9)-C(21) bond length is 1.50 Å. The C(9)-C(22) bond length is 1.39 Å. In the tenth C site, C(10) is bonded in a bent 120 degrees geometry to one C(11), one O(14), and one O(4) atom. The C(10)-C(11) bond length is 1.51 Å. The C(10)-O(14) bond length is 1.26 Å. The C(10)-O(4) bond length is 1.26 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(22) atom. The C(11)-C(12) bond length is 1.39 Å. The C(11)-C(22) bond length is 1.40 Å. In the twelfth C site, C(12) is bonded in a bent 120 degrees geometry to one C(11) and one C(7) atom. In the thirteenth C site, C(13) is bonded in a distorted bent 120 degrees geometry to one C(14), one O(6), and one O(7) atom. The C(13)-C(14) bond length is 1.51 Å. The C(13)-O(6) bond length is 1.26 Å. The C(13)-O(7) bond length is 1.26 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(13), one C(15), and one C(16) atom. The C(14)-C(15) bond length is 1.39 Å. The C(14)-C(16) bond length is 1.41 Å. In the fifteenth C site, C(15) is bonded in a bent 120 degrees geometry to one C(14) and one C(2) atom. In the sixteenth C site, C(16) is bonded in a bent 120 degrees geometry to one C(14) and one C(4) atom. In the seventeenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(18), one O(12), and one O(8) atom. The C(17)-C(18) bond length is 1.50 Å. The C(17)-O(12) bond length is 1.25 Å. The C(17)-O(8) bond length is 1.27 Å. In the eighteenth C site, C(18) is bonded in a trigonal planar geometry to one C(17), one C(19), and one C(20) atom. The C(18)-C(19) bond length is 1.39 Å. The C(18)-C(20) bond length is 1.41 Å. In the nineteenth C site, C(19) is bonded in a bent 120 degrees geometry to one C(18) and one C(20) atom. The C(19)-C(20) bond length is 1.39 Å. In the twentieth C site, C(20) is bonded in a bent 120 degrees geometry to one C(18) and one C(19) atom. In the twenty-first C site, C(21) is bonded in a distorted trigonal planar geometry to one C(9), one O(10), and one O(9) atom. The C(21)-O(10) bond length is 1.24 Å. The C(21)-O(9) bond length is 1.28 Å. In the twenty-second C site, C(22) is bonded in a bent 120 degrees geometry to one C(11) and one C(9) atom. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Cd(1) and one C(1) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Cd(1) and one C(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(3), and one C(3) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Cd(1) and one C(10) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Cd(1), one Cd(2), and one C(6) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Cd(1) and one C(13) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Cd(2) and one C(13) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Cd(2) and one C(17) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Cd(2), one Cd(3), and one C(21) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one Cd(2) and one C(21) atom. In the eleventh O site, O(11) is bonded in a water-like geometry to one Cd(2) and one C(6) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one Cd(3) and one C(17) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 120 degrees geometry to one Cd(3) and one C(1) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Cd(3) and one C(10) atom. Linkers: 8 [O]C(=O)c1[c]c(C([O])=O)[c]c(C([O])=O)[c]1 ,2 [O]C(=O)c1[c][c]c(C([O])=O)[c][c]1. Metal clusters: 12 [Cd]. The MOF has largest included sphere 6.36 A, density 1.35 g/cm3, surface area 2936.25 m2/g, accessible volume 0.42 cm3/g