Mn3H6(C5O6)2(CH3)2 crystallizes in the orthorhombic Pnma space group. The structure consists of eight 02329_fluka molecules inside a Mn3H6(C5O6)2 framework. In the Mn3H6(C5O6)2 framework, there are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(6), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form a mixture of distorted edge, corner, and face-sharing MnO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 59°. The Mn(1)-O(6) bond length is 2.30 Å. Both Mn(1)-O(1) bond lengths are 2.29 Å. Both Mn(1)-O(4) bond lengths are 2.25 Å. Both Mn(1)-O(5) bond lengths are 2.32 Å. In the second Mn site, Mn(2) is bonded to one O(6), one O(7), two equivalent O(1), and two equivalent O(4) atoms to form a mixture of edge and face-sharing MnO6 octahedra. The Mn(2)-O(6) bond length is 2.17 Å. The Mn(2)-O(7) bond length is 2.10 Å. Both Mn(2)-O(1) bond lengths are 2.21 Å. Both Mn(2)-O(4) bond lengths are 2.17 Å. In the third Mn site, Mn(3) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form corner-sharing MnO6 octahedra. Both Mn(3)-O(2) bond lengths are 2.15 Å. Both Mn(3)-O(3) bond lengths are 2.13 Å. Both Mn(3)-O(5) bond lengths are 2.14 Å. There are seven inequivalent C sites. In the first C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(6) and two equivalent O(5) atoms. The C(5)-C(6) bond length is 1.50 Å. Both C(5)-O(5) bond lengths are 1.25 Å. In the second C site, C(6) is bonded in a single-bond geometry to one C(5) atom. In the third C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(6), and one O(7) atom. The C(7)-C(8) bond length is 1.51 Å. The C(7)-O(6) bond length is 1.28 Å. The C(7)-O(7) bond length is 1.24 Å. In the fourth C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one O(1), and one O(3) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(3) bond length is 1.24 Å. In the fifth C site, C(2) is bonded in a trigonal non-coplanar geometry to one C(1) and three equivalent H(1,2,3) atoms. All C(2)-H(1,2,3) bond lengths are 0.98 Å. In the sixth C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(2) and one O(4) atom. The C(3)-O(2) bond length is 1.24 Å. The C(3)-O(4) bond length is 1.28 Å. In the seventh C site, C(8) is bonded in a single-bond geometry to one C(7) atom. H(1,2,3) is bonded in a single-bond geometry to one C(2) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Mn(3) and one C(3) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Mn(3) and one C(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one C(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(3), and one C(5) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one C(7) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Mn(2) and one C(7) atom. Linkers: 8 [C]C([O])=O ,16 CC([O])=O. Metal clusters: 12 [Mn]. The MOF has largest included sphere 4.52 A, density 1.58 g/cm3, surface area 3518.08 m2/g, accessible volume 0.25 cm3/g