CdH12(C3O)4 crystallizes in the orthorhombic Pca2_1 space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. The Cd(1)-O(1) bond length is 2.29 Å. The Cd(1)-O(2) bond length is 2.37 Å. The Cd(1)-O(3) bond length is 2.56 Å. The Cd(1)-O(4) bond length is 2.50 Å. The Cd(1)-O(5) bond length is 2.39 Å. The Cd(1)-O(6) bond length is 2.31 Å. The Cd(1)-O(7) bond length is 2.19 Å. In the second Cd site, Cd(2) is bonded in a T-shaped geometry to one O(2), one O(4), and one O(8) atom. The Cd(2)-O(2) bond length is 2.27 Å. The Cd(2)-O(4) bond length is 2.26 Å. The Cd(2)-O(8) bond length is 2.29 Å. There are twenty-four inequivalent C sites. In the first C site, C(16) is bonded in a trigonal planar geometry to one C(15), one C(8), and one C(9) atom. The C(16)-C(15) bond length is 1.39 Å. The C(16)-C(8) bond length is 1.41 Å. The C(16)-C(9) bond length is 1.50 Å. In the second C site, C(17) is bonded in a trigonal planar geometry to one C(1), one C(12), and one C(21) atom. The C(17)-C(1) bond length is 1.39 Å. The C(17)-C(12) bond length is 1.53 Å. The C(17)-C(21) bond length is 1.38 Å. In the third C site, C(18) is bonded in a trigonal non-coplanar geometry to one C(15) and three equivalent H(4,12,21) atoms. The C(18)-C(15) bond length is 1.51 Å. All C(18)-H(4,12,21) bond lengths are 0.96 Å. In the fourth C site, C(19) is bonded in a trigonal non-coplanar geometry to one C(7) and three equivalent H(7,17,23) atoms. The C(19)-C(7) bond length is 1.51 Å. All C(19)-H(7,17,23) bond lengths are 0.96 Å. In the fifth C site, C(20) is bonded in a trigonal non-coplanar geometry to one C(8); one H(8); and two equivalent H(6,16) atoms. The C(20)-C(8) bond length is 1.50 Å. The C(20)-H(8) bond length is 0.96 Å. Both C(20)-H(6,16) bond lengths are 0.96 Å. In the sixth C site, C(21) is bonded in a trigonal planar geometry to one C(14), one C(17), and one C(24) atom. The C(21)-C(14) bond length is 1.50 Å. The C(21)-C(24) bond length is 1.42 Å. In the seventh C site, C(22) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(7), and one O(8) atom. The C(22)-C(6) bond length is 1.51 Å. The C(22)-O(7) bond length is 1.24 Å. The C(22)-O(8) bond length is 1.24 Å. In the eighth C site, C(23) is bonded in a trigonal non-coplanar geometry to one C(3) and three equivalent H(9,18,22) atoms. The C(23)-C(3) bond length is 1.52 Å. All C(23)-H(9,18,22) bond lengths are 0.96 Å. In the ninth C site, C(24) is bonded in a trigonal planar geometry to one C(10), one C(13), and one C(21) atom. The C(24)-C(10) bond length is 1.39 Å. The C(24)-C(13) bond length is 1.50 Å. In the tenth C site, C(1) is bonded in a trigonal planar geometry to one C(17), one C(5), and one C(7) atom. The C(1)-C(5) bond length is 1.51 Å. The C(1)-C(7) bond length is 1.41 Å. In the eleventh C site, C(2) is bonded in a trigonal planar geometry to one C(15), one C(4), and one C(6) atom. The C(2)-C(15) bond length is 1.40 Å. The C(2)-C(4) bond length is 1.52 Å. The C(2)-C(6) bond length is 1.39 Å. In the twelfth C site, C(3) is bonded in a trigonal planar geometry to one C(23), one C(6), and one C(8) atom. The C(3)-C(6) bond length is 1.40 Å. The C(3)-C(8) bond length is 1.40 Å. In the thirteenth C site, C(4) is bonded in a trigonal non-coplanar geometry to one C(2); one H(10); and two equivalent H(2,24) atoms. The C(4)-H(10) bond length is 0.96 Å. Both C(4)-H(2,24) bond lengths are 0.96 Å. In the fourteenth C site, C(5) is bonded in a trigonal non-coplanar geometry to one C(1), one H(19), one H(20), and one H(5) atom. The C(5)-H(19) bond length is 0.96 Å. The C(5)-H(20) bond length is 0.96 Å. The C(5)-H(5) bond length is 0.96 Å. In the fifteenth C site, C(6) is bonded in a trigonal planar geometry to one C(2), one C(22), and one C(3) atom. In the sixteenth C site, C(7) is bonded in a trigonal planar geometry to one C(1), one C(10), and one C(19) atom. The C(7)-C(10) bond length is 1.40 Å. In the seventeenth C site, C(8) is bonded in a trigonal planar geometry to one C(16), one C(20), and one C(3) atom. In the eighteenth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(16), one O(2), and one O(5) atom. The C(9)-O(2) bond length is 1.26 Å. The C(9)-O(5) bond length is 1.24 Å. In the nineteenth C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(24), and one C(7) atom. The C(10)-C(11) bond length is 1.51 Å. In the twentieth C site, C(11) is bonded in a bent 120 degrees geometry to one C(10), one O(4), and one O(6) atom. The C(11)-O(4) bond length is 1.25 Å. The C(11)-O(6) bond length is 1.24 Å. In the twenty-first C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(17), one O(1), and one O(3) atom. The C(12)-O(1) bond length is 1.27 Å. The C(12)-O(3) bond length is 1.24 Å. In the twenty-second C site, C(13) is bonded in a trigonal non-coplanar geometry to one C(24) and three equivalent H(1,3,11,13,15) atoms. All C(13)-H(1,3,11,13,15) bond lengths are 0.96 Å. In the twenty-third C site, C(14) is bonded in a trigonal non-coplanar geometry to one C(21); one H(14); and two equivalent H(1,3,11,13,15) atoms. The C(14)-H(14) bond length is 0.96 Å. Both C(14)-H(1,3,11,13,15) bond lengths are 0.96 Å. In the twenty-fourth C site, C(15) is bonded in a trigonal planar geometry to one C(16), one C(18), and one C(2) atom. There are twelve inequivalent H sites. In the first H site, H(1,3,11,13,15) is bonded in a single-bond geometry to one C(14) atom. In the second H site, H(2,24) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(4,12,21) is bonded in a single-bond geometry to one C(18) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(5) atom. In the fifth H site, H(6,16) is bonded in a single-bond geometry to one C(20) atom. In the sixth H site, H(7,17,23) is bonded in a single-bond geometry to one C(19) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(20) atom. In the eighth H site, H(9,18,22) is bonded in a single-bond geometry to one C(23) atom. In the ninth H site, H(10) is bonded in a single-bond geometry to one C(4) atom. In the tenth H site, H(14) is bonded in a single-bond geometry to one C(14) atom. In the eleventh H site, H(19) is bonded in a single-bond geometry to one C(5) atom. In the twelfth H site, H(20) is bonded in a single-bond geometry to one C(5) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cd(1) and one C(12) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cd(1), one Cd(2), and one C(9) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Cd(1) and one C(12) 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(11) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Cd(1) and one C(9) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Cd(1) and one C(11) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one C(22) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Cd(2) and one C(22) atom. Linkers: 8 Cc1c(C)c(C([O])=O)c(C)c(C)c1C([O])=O. Metal clusters: 8 [Cd]. The MOF has largest included sphere 4.30 A, density 1.28 g/cm3, surface area 4049.51 m2/g, accessible volume 0.41 cm3/g