MnC7H4O5 crystallizes in the monoclinic C2 space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(11), one O(14), one O(3), one O(6), and one O(9) atom to form distorted corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 64°. The Mn(1)-O(1) bond length is 2.06 Å. The Mn(1)-O(11) bond length is 2.51 Å. The Mn(1)-O(14) bond length is 2.07 Å. The Mn(1)-O(3) bond length is 2.51 Å. The Mn(1)-O(6) bond length is 2.06 Å. The Mn(1)-O(9) bond length is 2.07 Å. In the second Mn site, Mn(2) is bonded to one O(10), one O(12), one O(15), one O(2), one O(4), and one O(7) atom to form distorted corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 64°. The Mn(2)-O(10) bond length is 2.07 Å. The Mn(2)-O(12) bond length is 2.51 Å. The Mn(2)-O(15) bond length is 2.07 Å. The Mn(2)-O(2) bond length is 2.07 Å. The Mn(2)-O(4) bond length is 2.51 Å. The Mn(2)-O(7) bond length is 2.06 Å. In the third Mn site, Mn(3) is bonded to one O(13), one O(16), one O(2), one O(5), one O(8), and one O(9) atom to form distorted corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 64°. The Mn(3)-O(13) bond length is 2.51 Å. The Mn(3)-O(16) bond length is 2.07 Å. The Mn(3)-O(2) bond length is 2.07 Å. The Mn(3)-O(5) bond length is 2.51 Å. The Mn(3)-O(8) bond length is 2.06 Å. The Mn(3)-O(9) bond length is 2.07 Å. There are nineteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one O(1) atom. The C(1)-O(1) bond length is 1.33 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one O(2) atom. The C(2)-O(2) bond length is 1.33 Å. In the third C site, C(3,4) is bonded in a distorted single-bond geometry to one C(10,11,12) and one O(3) atom. The C(3,4)-C(10,11,12) bond length is 1.39 Å. The C(3,4)-O(3) bond length is 1.38 Å. In the fourth C site, C(5) is bonded in a distorted single-bond geometry to one C(10,11,12) and one O(5) atom. The C(5)-C(10,11,12) bond length is 1.39 Å. The C(5)-O(5) bond length is 1.38 Å. In the fifth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(8) and two equivalent O(6) atoms. The C(6)-C(8) bond length is 1.48 Å. Both C(6)-O(6) bond lengths are 1.28 Å. In the sixth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(7), and one O(8) atom. The C(7)-C(9) bond length is 1.48 Å. The C(7)-O(7) bond length is 1.28 Å. The C(7)-O(8) bond length is 1.28 Å. In the seventh C site, C(8) is bonded in a trigonal planar geometry to one C(6) and two equivalent C(10,11,12) atoms. Both C(8)-C(10,11,12) bond lengths are 1.40 Å. In the eighth C site, C(9) is bonded in a trigonal planar geometry to one C(7) and two equivalent C(10,11,12) atoms. Both C(9)-C(10,11,12) bond lengths are 1.40 Å. In the ninth C site, C(10,11,12) is bonded in a distorted trigonal planar geometry to one C(3,4); one C(8); and one H(7,8,9) atom. The C(10,11,12)-H(7,8,9) bond length is 1.09 Å. In the tenth C site, C(13) is bonded in a distorted single-bond geometry to one C(15,16); one C(17); and one O(9) atom. The C(13)-C(15,16) bond length is 1.41 Å. The C(13)-C(17) bond length is 1.41 Å. The C(13)-O(9) bond length is 1.34 Å. In the eleventh C site, C(14) is bonded in a distorted single-bond geometry to two equivalent C(15,16) and one O(10) atom. Both C(14)-C(15,16) bond lengths are 1.41 Å. The C(14)-O(10) bond length is 1.34 Å. In the twelfth C site, C(15,16) is bonded in a distorted single-bond geometry to one C(13); one C(22,24); and one O(11) atom. The C(15,16)-C(22,24) bond length is 1.39 Å. The C(15,16)-O(11) bond length is 1.38 Å. In the thirteenth C site, C(17) is bonded in a distorted single-bond geometry to one C(13); one C(22,24); and one O(13) atom. The C(17)-C(22,24) bond length is 1.39 Å. The C(17)-O(13) bond length is 1.38 Å. In the fourteenth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one C(20), one O(14), and one O(16) atom. The C(18)-C(20) bond length is 1.48 Å. The C(18)-O(14) bond length is 1.28 Å. The C(18)-O(16) bond length is 1.28 Å. In the fifteenth C site, C(19) is bonded in a distorted bent 120 degrees geometry to one C(21) and two equivalent O(15) atoms. The C(19)-C(21) bond length is 1.48 Å. Both C(19)-O(15) bond lengths are 1.28 Å. In the sixteenth C site, C(20) is bonded in a trigonal planar geometry to one C(18) and two equivalent C(22,24) atoms. Both C(20)-C(22,24) bond lengths are 1.40 Å. In the seventeenth C site, C(21) is bonded in a trigonal planar geometry to one C(19) and two equivalent C(23) atoms. Both C(21)-C(23) bond lengths are 1.40 Å. In the eighteenth C site, C(22,24) is bonded in a distorted trigonal planar geometry to one C(15,16); one C(20); and one H(10,11,12) atom. The C(22,24)-H(10,11,12) bond length is 1.09 Å. In the nineteenth C site, C(23) is bonded in a distorted trigonal planar geometry to one C(15,16); one C(21); and one H(10,11,12) atom. The C(23)-C(15,16) bond length is 1.39 Å. The C(23)-H(10,11,12) bond length is 1.09 Å. There are six inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one O(3) atom. The H(1,2)-O(3) bond length is 0.97 Å. In the second H site, H(3) is bonded in a single-bond geometry to one O(5) atom. The H(3)-O(5) bond length is 0.97 Å. In the third H site, H(4,5) is bonded in a single-bond geometry to one O(11) atom. The H(4,5)-O(11) bond length is 0.97 Å. In the fourth H site, H(6) is bonded in a single-bond geometry to one O(13) atom. The H(6)-O(13) bond length is 0.97 Å. In the fifth H site, H(7,8,9) is bonded in a single-bond geometry to one C(10,11,12) atom. In the sixth H site, H(10,11,12) is bonded in a single-bond geometry to one C(22,24) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Mn(1) and one C(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Mn(2), one Mn(3), and one C(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(1); one C(3,4); and one H(1,2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mn(2); one C(3,4); and one H(1,2) atom. The O(4)-C(3,4) bond length is 1.38 Å. The O(4)-H(1,2) bond length is 0.97 Å. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(3), one C(5), and one H(3) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one C(6) 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. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Mn(3) and one C(7) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Mn(1), one Mn(3), and one C(13) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to two equivalent Mn(2) and one C(14) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Mn(1); one C(15,16); and one H(4,5) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Mn(2); one C(15,16); and one H(4,5) atom. The O(12)-C(15,16) bond length is 1.38 Å. The O(12)-H(4,5) bond length is 0.97 Å. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Mn(3), one C(17), and one H(6) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(18) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one Mn(2) and one C(19) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Mn(3) and one C(18) atom. Linkers: 6 [O]C(=O)c1cc(O)c([O])c(O)c1. Metal clusters: 6 [Mn]. The MOF has largest included sphere 3.64 A, density 1.43 g/cm3, surface area 3526.08 m2/g, accessible volume 0.28 cm3/g