Mn3H8(C6O5)4 crystallizes in the triclinic P-1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom to form distorted corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 69°. The Mn(1)-O(2) bond length is 2.15 Å. The Mn(1)-O(3) bond length is 2.11 Å. The Mn(1)-O(4) bond length is 2.12 Å. The Mn(1)-O(6) bond length is 2.26 Å. The Mn(1)-O(7) bond length is 2.35 Å. The Mn(1)-O(8) bond length is 2.16 Å. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(6), and two equivalent O(9) atoms to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 69°. Both Mn(2)-O(1) bond lengths are 2.16 Å. Both Mn(2)-O(6) bond lengths are 2.21 Å. Both Mn(2)-O(9) bond lengths are 2.17 Å. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.48 Å. The C(1)-O(1) bond length is 1.24 Å. The C(1)-O(2) bond length is 1.26 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one C(3), and one O(5) atom. The C(2)-C(3) bond length is 1.35 Å. The C(2)-O(5) bond length is 1.37 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(1) atom. The C(3)-H(1) bond length is 0.95 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(5) and one H(2) atom. The C(4)-C(5) bond length is 1.34 Å. The C(4)-H(2) bond length is 0.95 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(4), one C(6), and one O(5) atom. The C(5)-C(6) bond length is 1.47 Å. The C(5)-O(5) bond length is 1.37 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(3), and one O(4) atom. The C(6)-O(3) bond length is 1.25 Å. The C(6)-O(4) bond length is 1.26 Å. In the seventh 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 1.49 Å. The C(7)-O(6) bond length is 1.27 Å. The C(7)-O(7) bond length is 1.25 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(7), one C(9), and one O(10) atom. The C(8)-C(9) bond length is 1.34 Å. The C(8)-O(10) bond length is 1.38 Å. In the ninth C site, C(9) is bonded in a single-bond geometry to one C(8) and one H(3) atom. The C(9)-H(3) bond length is 0.95 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(11) and one H(4) atom. The C(10)-C(11) bond length is 1.34 Å. The C(10)-H(4) bond length is 0.95 Å. In the eleventh C site, C(11) is bonded in a distorted trigonal planar geometry to one C(10), one C(12), and one O(10) atom. The C(11)-C(12) bond length is 1.49 Å. The C(11)-O(10) bond length is 1.38 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(11), one O(8), and one O(9) atom. The C(12)-O(8) bond length is 1.26 Å. The C(12)-O(9) bond length is 1.25 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. 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(9) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(10) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(2) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Mn(1) and one C(6) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(6) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one C(2) 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 an L-shaped geometry to one Mn(1) and one C(7) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(12) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Mn(2) and one C(12) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one C(11) and one C(8) atom. Linkers: 4 [O]C(=O)c1ccc(C([O])=O)o1. Metal clusters: 3 [Mn]. The MOF has largest included sphere 6.18 A, density 1.25 g/cm3, surface area 3586.81 m2/g, accessible volume 0.39 cm3/g