MgH30(C7O)2 is Indium-like structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four MgH30(C7O)2 clusters. Mg(1) is bonded to two equivalent C(3) and two equivalent O(1) atoms to form distorted MgC2O2 trigonal pyramids that share corners with two equivalent C(4)C4 tetrahedra. Both Mg(1)-C(3) bond lengths are 2.15 Å. Both Mg(1)-O(1) bond lengths are 2.13 Å. There are seven inequivalent C sites. In the first C site, C(2) is bonded in a distorted trigonal non-coplanar geometry to one H(3), one H(4), and one O(1) atom. The C(2)-H(3) bond length is 1.10 Å. The C(2)-H(4) bond length is 1.10 Å. The C(2)-O(1) bond length is 1.45 Å. In the second C site, C(3) is bonded in a 4-coordinate geometry to one Mg(1), one C(4), one H(5), and one H(6) atom. The C(3)-C(4) bond length is 1.54 Å. The C(3)-H(5) bond length is 1.11 Å. The C(3)-H(6) bond length is 1.11 Å. In the third C site, C(4) is bonded to one C(3), one C(5), one C(6), and one C(7) atom to form CC4 tetrahedra that share  a cornercorner with one Mg(1)C2O2 trigonal pyramid. The C(4)-C(5) bond length is 1.54 Å. The C(4)-C(6) bond length is 1.54 Å. The C(4)-C(7) bond length is 1.54 Å. In the fourth C site, C(5) is bonded in a distorted trigonal non-coplanar geometry to one C(4), one H(7), one H(8), and one H(9) atom. The C(5)-H(7) bond length is 1.10 Å. The C(5)-H(8) bond length is 1.10 Å. The C(5)-H(9) bond length is 1.10 Å. In the fifth C site, C(6) is bonded in a trigonal non-coplanar geometry to one C(4), one H(10), one H(11), and one H(12) atom. The C(6)-H(10) bond length is 1.10 Å. The C(6)-H(11) bond length is 1.10 Å. The C(6)-H(12) bond length is 1.10 Å. In the sixth C site, C(7) is bonded in a distorted trigonal non-coplanar geometry to one C(4), one H(13), one H(14), and one H(15) atom. The C(7)-H(13) bond length is 1.10 Å. The C(7)-H(14) bond length is 1.10 Å. The C(7)-H(15) bond length is 1.10 Å. In the seventh C site, C(1) is bonded in a distorted trigonal non-coplanar geometry to one H(1), one H(2), and one O(1) atom. The C(1)-H(1) bond length is 1.10 Å. The C(1)-H(2) bond length is 1.10 Å. The C(1)-O(1) bond length is 1.45 Å. There are fifteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(3) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(3) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(5) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(5) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(5) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(6) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(6) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(6) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(7) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(7) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(7) atom. O(1) is bonded in a trigonal planar geometry to one Mg(1), one C(1), and one C(2) atom. Linkers: 2 C1COCCO1. Metal clusters: 2 [Mg]. The MOF has largest included sphere 2.50 A, density 1.03 g/cm3, surface area 7769.66 m2/g, accessible volume 0.35 cm3/g