CdC13H5O4(CH3CO)2 crystallizes in the monoclinic P2_1/c space group. The structure consists of sixteen dimethyl ether molecules inside a CdC13H5O4 framework. In the CdC13H5O4 framework, 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(11), one O(2), one O(3), one O(4), one O(5), and one O(8) atom. The Cd(1)-O(1) bond length is 2.44 Å. The Cd(1)-O(11) bond length is 2.22 Å. The Cd(1)-O(2) bond length is 2.25 Å. The Cd(1)-O(3) bond length is 2.62 Å. The Cd(1)-O(4) bond length is 2.61 Å. The Cd(1)-O(5) bond length is 2.27 Å. The Cd(1)-O(8) bond length is 2.30 Å. In the second Cd site, Cd(2) is bonded in a distorted T-shaped geometry to one O(12), one O(3), and one O(5) atom. The Cd(2)-O(12) bond length is 2.23 Å. The Cd(2)-O(3) bond length is 2.30 Å. The Cd(2)-O(5) bond length is 2.30 Å. There are twenty-six inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(6), one O(4), and one O(5) atom. The C(1)-C(6) bond length is 1.50 Å. The C(1)-O(4) bond length is 1.24 Å. The C(1)-O(5) bond length is 1.27 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(1), and one O(2) atom. The C(2)-C(8) bond length is 1.51 Å. The C(2)-O(1) bond length is 1.26 Å. The C(2)-O(2) bond length is 1.26 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(13), one C(19), and one C(5) atom. The C(3)-C(13) bond length is 1.50 Å. The C(3)-C(19) bond length is 1.39 Å. The C(3)-C(5) bond length is 1.39 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(10), one C(8), and one H(1) atom. The C(4)-C(10) bond length is 1.38 Å. The C(4)-C(8) bond length is 1.38 Å. The C(4)-H(1) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(22), one C(3), and one H(2) atom. The C(5)-C(22) bond length is 1.41 Å. The C(5)-H(2) bond length is 0.93 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(1), one C(12), and one C(9) atom. The C(6)-C(12) bond length is 1.40 Å. The C(6)-C(9) bond length is 1.38 Å. In the seventh C site, C(7) is bonded in a bent 120 degrees geometry to one C(11), one O(3), and one O(8) atom. The C(7)-C(11) bond length is 1.50 Å. The C(7)-O(3) bond length is 1.25 Å. The C(7)-O(8) bond length is 1.24 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(12), one C(2), and one C(4) atom. The C(8)-C(12) bond length is 1.38 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(3) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-H(3) bond length is 0.93 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(14), one C(4), and one C(9) atom. The C(10)-C(14) bond length is 1.49 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one C(16), one C(19), and one C(7) atom. The C(11)-C(16) bond length is 1.39 Å. The C(11)-C(19) bond length is 1.39 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(6), one C(8), and one H(4) atom. The C(12)-H(4) bond length is 0.93 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one C(15), one C(17), and one C(3) atom. The C(13)-C(15) bond length is 1.39 Å. The C(13)-C(17) bond length is 1.40 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(10), one C(24), and one C(28) atom. The C(14)-C(24) bond length is 1.40 Å. The C(14)-C(28) bond length is 1.41 Å. In the fifteenth C site, C(15) is bonded in a trigonal planar geometry to one C(13), one C(17), and one C(18) atom. The C(15)-C(17) bond length is 1.42 Å. The C(15)-C(18) bond length is 1.42 Å. In the sixteenth C site, C(16) is bonded in a distorted trigonal planar geometry to one C(11), one C(22), and one H(5) atom. The C(16)-C(22) bond length is 1.38 Å. The C(16)-H(5) bond length is 0.93 Å. In the seventeenth C site, C(17) is bonded in a trigonal planar geometry to one C(13), one C(15), and one C(25) atom. The C(17)-C(25) bond length is 1.44 Å. In the eighteenth C site, C(18) is bonded in a single-bond geometry to one C(15) and one H(6) atom. The C(18)-H(6) bond length is 0.93 Å. In the nineteenth C site, C(19) is bonded in a distorted single-bond geometry to one C(11), one C(3), and one H(7) atom. The C(19)-H(7) bond length is 0.93 Å. In the twentieth C site, C(22) is bonded in a trigonal planar geometry to one C(16), one C(31), and one C(5) atom. The C(22)-C(31) bond length is 1.49 Å. In the twenty-first C site, C(24) is bonded in a trigonal planar geometry to one C(14), one C(27), and one C(28) atom. The C(24)-C(27) bond length is 1.43 Å. The C(24)-C(28) bond length is 1.43 Å. In the twenty-second C site, C(25) is bonded in a single-bond geometry to one C(17) and one H(8) atom. The C(25)-H(8) bond length is 0.93 Å. In the twenty-third C site, C(26) is bonded in a single-bond geometry to one C(28) and one H(9) atom. The C(26)-C(28) bond length is 1.42 Å. The C(26)-H(9) bond length is 0.93 Å. In the twenty-fourth C site, C(27) is bonded in a single-bond geometry to one C(24) and one H(10) atom. The C(27)-H(10) bond length is 0.93 Å. In the twenty-fifth C site, C(28) is bonded in a trigonal planar geometry to one C(14), one C(24), and one C(26) atom. In the twenty-sixth C site, C(31) is bonded in a distorted bent 120 degrees geometry to one C(22), one O(11), and one O(12) atom. The C(31)-O(11) bond length is 1.26 Å. The C(31)-O(12) bond length is 1.25 Å. There are ten inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(9) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(12) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(16) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(18) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(19) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(25) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(26) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(27) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one Cd(1) and one C(2) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Cd(1) and one C(2) atom. In the third O site, O(5) is bonded in a distorted T-shaped geometry to one Cd(1), one Cd(2), and one C(1) atom. In the fourth O site, O(11) is bonded in a bent 120 degrees geometry to one Cd(1) and one C(31) atom. In the fifth O site, O(3) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one C(7) atom. In the sixth O site, O(4) is bonded in a distorted single-bond geometry to one Cd(1) and one C(1) atom. In the seventh O site, O(8) is bonded in a water-like geometry to one Cd(1) and one C(7) atom. In the eighth O site, O(12) is bonded in a distorted bent 150 degrees geometry to one Cd(2) and one C(31) atom. Linkers: 5 COc1cc2c(-c3cc(C([O])=O)cc(C([O])=O)c3)c3cc(OC)c(OC)cc3c(-c3cc(C([O])=O)cc(C([O])=O)c3)c2cc1OC. Metal clusters: 4 O=[C]O[Cd]12(O[C]O[Cd]O[C]O1)O[C]O2. RCSR code: pts. The MOF has largest included sphere 7.36 A, density 1.05 g/cm3, surface area 3996.51 m2/g, accessible volume 0.57 cm3/g