BaH12(C13O4)2(CH3CO)4 crystallizes in the monoclinic C2/c space group. The structure consists of sixteen dimethyl ether molecules inside a BaH12(C13O4)2 framework. In the BaH12(C13O4)2 framework, Ba(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Both Ba(1)-O(1) bond lengths are 2.74 Å. Both Ba(1)-O(2) bond lengths are 2.81 Å. There are two shorter (2.71 Å) and two longer (3.04 Å) Ba(1)-O(3) bond lengths. There are thirteen inequivalent C sites. In the first C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(2), and one O(3) atom. The C(8)-C(2) bond length is 1.50 Å. The C(8)-O(2) bond length is 1.28 Å. The C(8)-O(3) bond length is 1.27 Å. In the second C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(11), and one C(7) atom. The C(9)-C(10) bond length is 1.41 Å. The C(9)-C(11) bond length is 1.41 Å. The C(9)-C(7) bond length is 1.49 Å. In the third C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(14), and one C(9) atom. The C(10)-C(11) bond length is 1.44 Å. The C(10)-C(14) bond length is 1.43 Å. In the fourth C site, C(11) is bonded in a trigonal planar geometry to one C(10), one C(13), and one C(9) atom. The C(11)-C(13) bond length is 1.43 Å. In the fifth C site, C(13) is bonded in a distorted single-bond geometry to one C(11) and one H(5) atom. The C(13)-H(5) bond length is 1.09 Å. In the sixth C site, C(14) is bonded in a distorted single-bond geometry to one C(10) and one H(6) atom. The C(14)-H(6) bond length is 1.09 Å. In the seventh C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(1), and one O(4) atom. The C(1)-C(3) bond length is 1.48 Å. The C(1)-O(1) bond length is 1.24 Å. The C(1)-O(4) bond length is 1.33 Å. In the eighth C site, C(2) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(8) atom. The C(2)-C(4) bond length is 1.39 Å. The C(2)-C(6) bond length is 1.40 Å. In the ninth C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(4), and one C(5) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(5) bond length is 1.40 Å. In the tenth C site, C(4) is bonded in a distorted trigonal planar geometry to one C(2), one C(3), and one H(2) atom. The C(4)-H(2) bond length is 1.09 Å. In the eleventh C site, C(5) is bonded in a distorted trigonal planar geometry to one C(3), one C(7), and one H(3) atom. The C(5)-C(7) bond length is 1.40 Å. The C(5)-H(3) bond length is 1.09 Å. In the twelfth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(2), one C(7), and one H(4) atom. The C(6)-C(7) bond length is 1.40 Å. The C(6)-H(4) bond length is 1.09 Å. In the thirteenth C site, C(7) is bonded in a trigonal planar geometry to one C(5), one C(6), and one C(9) atom. There are six inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(2) and one O(4) atom. The H(1)-O(2) bond length is 1.54 Å. The H(1)-O(4) bond length is 1.03 Å. 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(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(6) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(13) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(14) atom. There are four inequivalent O sites. In the first O site, O(4) is bonded in a water-like geometry to one C(1) and one H(1) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to one Ba(1) and one C(1) atom. In the third O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Ba(1), one C(8), and one H(1) atom. In the fourth O site, O(3) is bonded in a 1-coordinate geometry to two equivalent Ba(1) and one C(8) atom. Linkers: 2 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 ,2 [CH2]Oc1cc2c(-c3cc(C([O])=O)cc(C(=O)O)c3)c3cc(OC)c(OC)cc3c(-c3cc(C([O])=O)cc(C(=O)O)c3)c2cc1OC ,2 COc1cc2c(-c3c[c]cc(C([O])=O)c3)c3cc(OC)c(OC)cc3c(-c3cc(C([O])=O)cc(C(=O)O)c3)c2cc1OC. Metal clusters: 2 [Ba]. The MOF has largest included sphere 5.39 A, density 1.40 g/cm3, surface area 4142.34 m2/g, accessible volume 0.27 cm3/g