MgC19H13O3(CH2)2 crystallizes in the trigonal R-3 space group. The structure consists of thirty-six 02329_fluka molecules inside a MgC19H13O3 framework. In the MgC19H13O3 framework, Mg(1) is bonded to one O(1), two equivalent O(2), and two equivalent O(3) atoms to form edge-sharing MgO5 square pyramids. The Mg(1)-O(1) bond length is 1.91 Å. There is one shorter (1.82 Å) and one longer (1.90 Å) Mg(1)-O(2) bond length. There is one shorter (1.93 Å) and one longer (1.96 Å) Mg(1)-O(3) bond length. There are nineteen inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) 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(3), and one C(7) atom. The C(2)-C(3) bond length is 1.42 Å. The C(2)-C(7) bond length is 1.42 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one O(3) atom. The C(3)-O(3) bond length is 1.39 Å. In the fourth C site, C(4) is bonded in a single-bond geometry to one C(5) and one H(1) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(1) bond length is 1.08 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(8) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-C(8) bond length is 1.48 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(5), one C(7), and one H(3) atom. The C(6)-C(7) bond length is 1.40 Å. The C(6)-H(3) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(2), one C(6), and one H(2) atom. The C(7)-H(2) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(13), one C(5), and one C(9) atom. The C(8)-C(13) bond length is 1.41 Å. The C(8)-C(9) bond length is 1.42 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(17), and one C(8) atom. The C(9)-C(10) bond length is 1.41 Å. The C(9)-C(17) bond length is 1.51 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(11), one C(9), and one H(5) atom. The C(10)-C(11) bond length is 1.41 Å. The C(10)-H(5) bond length is 1.09 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(14) atom. The C(11)-C(12) bond length is 1.42 Å. The C(11)-C(14) bond length is 1.49 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(18) atom. The C(12)-C(13) bond length is 1.40 Å. The C(12)-C(18) bond length is 1.51 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(12), one C(8), and one H(4) atom. The C(13)-H(4) bond length is 1.09 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(11), one C(15), and one C(16) atom. The C(14)-C(15) bond length is 1.40 Å. The C(14)-C(16) bond length is 1.42 Å. In the fifteenth C site, C(15) is bonded in a distorted single-bond geometry to one C(14), one C(16), and one H(6) atom. The C(15)-C(16) bond length is 1.40 Å. The C(15)-H(6) bond length is 1.09 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one C(14), one C(15), and one C(19) atom. The C(16)-C(19) bond length is 1.51 Å. In the seventeenth C site, C(17) is bonded in a trigonal non-coplanar geometry to one C(9), one H(7), and one H(8) atom. The C(17)-H(7) bond length is 1.11 Å. The C(17)-H(8) bond length is 1.11 Å. In the eighteenth C site, C(18) is bonded in a trigonal non-coplanar geometry to one C(12), one H(10), one H(11), and one H(9) atom. The C(18)-H(10) bond length is 1.11 Å. The C(18)-H(11) bond length is 1.11 Å. The C(18)-H(9) bond length is 1.11 Å. In the nineteenth C site, C(19) is bonded in a water-like geometry to one C(16), one H(12), and one H(13) atom. The C(19)-H(12) bond length is 1.11 Å. The C(19)-H(13) bond length is 1.11 Å. There are thirteen 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(7) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(13) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(10) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(15) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(17) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(17) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(18) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(18) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(18) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(19) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(19) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mg(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Mg(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mg(1) and one C(3) atom. Linkers: 2 [CH2]CCc1cc(-c2cc([CH2])c(-c3ccc(C([O])=O)c([O])c3)cc2C)c(CC[CH2])cc1-c1cc([CH2])c(-c2ccc([C]=O)c([O])c2)cc1C ,2 [C]/C([O])=C\C(=[CH])c1cc(C)c(-c2cc(CC[CH2])c(-c3cc([CH2])c(-c4ccc(C([O])=O)c([O])c4)cc3C)cc2CC[CH2])cc1[CH2] ,2 [CH]c1cc(-c2cc([CH2])c(-c3ccc(C([O])=O)c([O])c3)cc2C)c(CC[CH2])cc1-c1cc([CH2])[c]cc1C ,4 [CH]=C([C]c1cc([CH2])c(-c2ccc(C([O])=O)c([O])c2)cc1C)CC[CH2] ,1 [CH2]CCc1cc(-c2cc([CH2])c(-c3ccc(C([O])=O)c([O])c3)cc2C)c(CC[CH2])cc1-c1cc([CH2])c(-c2ccc(C([O])=O)c([O])c2)cc1C. Metal clusters: 6 [Mg]. The MOF has largest included sphere 28.22 A, density 0.38 g/cm3, surface area 5234.19 m2/g, accessible volume 2.03 cm3/g