MgC14H10(SO5)2 crystallizes in the triclinic P-1 space group. Mg(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Both Mg(1)-O(1) bond lengths are 2.05 Å. Both Mg(1)-O(2) bond lengths are 2.11 Å. Both Mg(1)-O(4) bond lengths are 2.07 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(6), and one S(1) atom. The C(1)-C(2) bond length is 1.40 Å. The C(1)-C(6) bond length is 1.39 Å. The C(1)-S(1) bond length is 1.78 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(2)-H(1) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(4) and one H(2) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-H(2) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(7) atom. The C(4)-C(5) bond length is 1.41 Å. The C(4)-C(7) bond length is 1.49 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(7) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-C(7) bond length is 1.48 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(1), one C(5), and one H(3) atom. The C(6)-H(3) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a single-bond geometry to one C(4), one C(5), and one O(5) atom. The C(7)-O(5) bond length is 1.24 Å. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) 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 O(1) atom. The H(4)-O(1) bond length is 0.98 Å. In the fifth H site, H(5) is bonded in a distorted linear geometry to one O(1) and one O(3) atom. The H(5)-O(1) bond length is 1.00 Å. The H(5)-O(3) bond length is 1.66 Å. S(1) is bonded in a distorted trigonal non-coplanar geometry to one C(1), one O(2), one O(3), and one O(4) atom. The S(1)-O(2) bond length is 1.48 Å. The S(1)-O(3) bond length is 1.46 Å. The S(1)-O(4) bond length is 1.47 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one H(4), and one H(5) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Mg(1) and one S(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one H(5) and one S(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Mg(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one C(7) atom. Linkers: 1 [O]S([O])([O])c1ccc2c(c1)C(=O)c1ccc(S([O])([O])[O])cc1C2=O. Metal clusters: 1 [Mg]. The MOF has largest included sphere 1.64 A, density 1.95 g/cm3, surface area 3366.73 m2/g, accessible volume 0.05 cm3/g