Mn3H15(C15O8)2 crystallizes in the trigonal P-3m1 space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(8), two equivalent O(1), and two equivalent O(3) atoms to form distorted corner-sharing MnO5 square pyramids. The Mn(1)-O(8) bond length is 2.13 Å. Both Mn(1)-O(1) bond lengths are 2.14 Å. Both Mn(1)-O(3) bond lengths are 2.14 Å. In the second Mn site, Mn(2) is bonded to one O(8), two equivalent O(2), and two equivalent O(7) atoms to form corner-sharing MnO5 square pyramids. The Mn(2)-O(8) bond length is 2.13 Å. Both Mn(2)-O(2) bond lengths are 2.12 Å. Both Mn(2)-O(7) bond lengths are 2.23 Å. In the third Mn site, Mn(3) is bonded in a 5-coordinate geometry to one O(8), two equivalent O(4), and two equivalent O(6) atoms. The Mn(3)-O(8) bond length is 2.09 Å. Both Mn(3)-O(4) bond lengths are 2.17 Å. Both Mn(3)-O(6) bond lengths are 2.19 Å. There are seventeen inequivalent C sites. In the first C site, C(14) is bonded in a trigonal planar geometry to one C(15) and two equivalent C(10) atoms. The C(14)-C(15) bond length is 1.50 Å. Both C(14)-C(10) bond lengths are 1.38 Å. In the second C site, C(15) is bonded in a distorted trigonal non-coplanar geometry to one C(14), two equivalent H(6), and one O(9) atom. Both C(15)-H(6) bond lengths are 0.97 Å. The C(15)-O(9) bond length is 1.43 Å. In the third C site, C(16) is bonded in a distorted trigonal planar geometry to two equivalent C(11) and one O(9) atom. Both C(16)-C(11) bond lengths are 1.34 Å. The C(16)-O(9) bond length is 1.41 Å. In the fourth C site, C(17) is bonded in a distorted single-bond geometry to two equivalent C(12) and one H(8) atom. Both C(17)-C(12) bond lengths are 1.35 Å. The C(17)-H(8) bond length is 0.93 Å. In the fifth 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 1.47 Å. The C(1)-O(1) bond length is 1.28 Å. The C(1)-O(2) bond length is 1.22 Å. In the sixth C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(7) atom. The C(2)-C(3) bond length is 1.38 Å. The C(2)-C(7) bond length is 1.39 Å. In the seventh 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 0.93 Å. In the eighth C site, C(4) is bonded in a single-bond geometry to one O(5) atom. The C(4)-O(5) bond length is 1.37 Å. In the ninth C site, C(5) is bonded in a distorted single-bond geometry to one C(6) and one H(2) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-H(2) bond length is 0.93 Å. In the tenth C site, C(6) is bonded in a trigonal planar geometry to one C(5), one C(7), and one C(8) atom. The C(6)-C(7) bond length is 1.31 Å. The C(6)-C(8) bond length is 1.54 Å. In the eleventh C site, C(7) is bonded in a distorted single-bond geometry to one C(2), one C(6), and one H(3) atom. The C(7)-H(3) bond length is 0.93 Å. In the twelfth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(6), one O(3), and one O(4) atom. The C(8)-O(3) bond length is 1.24 Å. The C(8)-O(4) bond length is 1.26 Å. In the thirteenth C site, C(9) is bonded in a distorted trigonal non-coplanar geometry to one C(10); two equivalent H(4,5); and one O(5) atom. The C(9)-C(10) bond length is 1.52 Å. Both C(9)-H(4,5) bond lengths are 0.97 Å. The C(9)-O(5) bond length is 1.42 Å. In the fourteenth C site, C(10) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(9) atom. The C(10)-C(10) bond length is 1.37 Å. In the fifteenth C site, C(11) is bonded in a distorted single-bond geometry to one C(12), one C(16), and one H(7) atom. The C(11)-C(12) bond length is 1.39 Å. The C(11)-H(7) bond length is 0.93 Å. In the sixteenth C site, C(12) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(17) atom. The C(12)-C(13) bond length is 1.55 Å. In the seventeenth C site, C(13) is bonded in a bent 120 degrees geometry to one C(12), one O(6), and one O(7) atom. The C(13)-O(6) bond length is 1.28 Å. The C(13)-O(7) bond length is 1.14 Å. There are seven 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(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(4,5) is bonded in a single-bond geometry to one C(9) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(15) atom. In the sixth H site, H(7) is bonded in a single-bond geometry to one C(11) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(17) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Mn(2) and one C(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one C(8) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Mn(3) and one C(8) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one C(4) and one C(9) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Mn(3) and one C(13) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Mn(2) and one C(13) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(3) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one C(15) and one C(16) atom. Linkers: 6 [O][C]c1cc([C][O])cc(OCc2c(COc3cc(C([O])=O)cc(C([O])=O)c3)c(COc3cc(C([O])=O)cc(C([O])=O)c3)c(COc3cc(C([O])=O)cc(C([O])=O)c3)c(COc3cc(C([O])=O)cc(C([O])=O)c3)c2COc2cc(C([O])=O)cc(C([O])=O)c2)c1 ,3 [O]C(=O)c1cc(OCc2c(COc3cc(C([O])=O)cc(C([O])=O)c3)c(COc3cc(C([O])=O)cc(C([O])=O)c3)c(COc3cc(C([O])=O)cc(C([O])=O)c3)c(COc3cc(C([O])=O)cc(C([O])=O)c3)c2COc2cc(C([O])=O)cc(C([O])=O)c2)cc(C([O])=O)c1. Metal clusters: 6 [C]1O[Mn]23O[C]O[Mn]45(O1)O[C]O[Mn](O[C]O2)(O[C]O3)(O[C]O4)O5. The MOF has largest included sphere 15.43 A, density 0.79 g/cm3, surface area 3646.01 m2/g, accessible volume 0.86 cm3/g