MnH2(C3O2)2 crystallizes in the triclinic P1 space group. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(13), one O(17), one O(18), and one O(7) atom. The Mn(1)-O(1) bond length is 2.10 Å. The Mn(1)-O(12) bond length is 2.24 Å. The Mn(1)-O(13) bond length is 2.31 Å. The Mn(1)-O(17) bond length is 2.42 Å. The Mn(1)-O(18) bond length is 2.15 Å. The Mn(1)-O(7) bond length is 2.11 Å. In the second Mn site, Mn(2) is bonded in a 6-coordinate geometry to one O(11), one O(14), one O(17), one O(18), one O(2), and one O(8) atom. The Mn(2)-O(11) bond length is 2.25 Å. The Mn(2)-O(14) bond length is 2.31 Å. The Mn(2)-O(17) bond length is 2.16 Å. The Mn(2)-O(18) bond length is 2.44 Å. The Mn(2)-O(2) bond length is 2.10 Å. The Mn(2)-O(8) bond length is 2.11 Å. In the third Mn site, Mn(3) is bonded in a 6-coordinate geometry to one O(10), one O(15), one O(19), one O(20), one O(3), and one O(5) atom. The Mn(3)-O(10) bond length is 2.25 Å. The Mn(3)-O(15) bond length is 2.31 Å. The Mn(3)-O(19) bond length is 2.43 Å. The Mn(3)-O(20) bond length is 2.16 Å. The Mn(3)-O(3) bond length is 2.10 Å. The Mn(3)-O(5) bond length is 2.11 Å. In the fourth Mn site, Mn(4) is bonded in a 6-coordinate geometry to one O(16), one O(19), one O(20), one O(4), one O(6), and one O(9) atom. The Mn(4)-O(16) bond length is 2.31 Å. The Mn(4)-O(19) bond length is 2.15 Å. The Mn(4)-O(20) bond length is 2.43 Å. The Mn(4)-O(4) bond length is 2.10 Å. The Mn(4)-O(6) bond length is 2.11 Å. The Mn(4)-O(9) bond length is 2.25 Å. In the fifth Mn site, Mn(5) is bonded in an octahedral geometry to one O(11), one O(13), one O(15), one O(22), one O(24), and one O(9) atom. The Mn(5)-O(11) bond length is 2.20 Å. The Mn(5)-O(13) bond length is 2.18 Å. The Mn(5)-O(15) bond length is 2.18 Å. The Mn(5)-O(22) bond length is 2.07 Å. The Mn(5)-O(24) bond length is 2.06 Å. The Mn(5)-O(9) bond length is 2.20 Å. In the sixth Mn site, Mn(6) is bonded in an octahedral geometry to one O(10), one O(12), one O(14), one O(16), one O(21), and one O(23) atom. The Mn(6)-O(10) bond length is 2.21 Å. The Mn(6)-O(12) bond length is 2.19 Å. The Mn(6)-O(14) bond length is 2.18 Å. The Mn(6)-O(16) bond length is 2.19 Å. The Mn(6)-O(21) bond length is 2.07 Å. The Mn(6)-O(23) bond length is 2.07 Å. There are thirty-three inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(21); one C(25); and one C(5,6) atom. The C(1)-C(21) bond length is 1.39 Å. The C(1)-C(25) bond length is 1.50 Å. The C(1)-C(5,6) bond length is 1.40 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(22); one C(26); and one C(5,6) atom. The C(2)-C(22) bond length is 1.39 Å. The C(2)-C(26) bond length is 1.50 Å. The C(2)-C(5,6) bond length is 1.40 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(23), one C(27), and one C(7) atom. The C(3)-C(23) bond length is 1.39 Å. The C(3)-C(27) bond length is 1.50 Å. The C(3)-C(7) bond length is 1.40 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(24), one C(28), and one C(8) atom. The C(4)-C(24) bond length is 1.39 Å. The C(4)-C(28) bond length is 1.50 Å. The C(4)-C(8) bond length is 1.40 Å. In the fifth C site, C(5,6) is bonded in a distorted single-bond geometry to one C(1) and one H(1,2,3,4) atom. The C(5,6)-H(1,2,3,4) bond length is 1.09 Å. In the sixth C site, C(7) is bonded in a distorted single-bond geometry to one C(3) and one H(1,2,3,4) atom. The C(7)-H(1,2,3,4) bond length is 1.09 Å. In the seventh C site, C(8) is bonded in a distorted single-bond geometry to one C(4) and one H(1,2,3,4) atom. The C(8)-H(1,2,3,4) bond length is 1.09 Å. In the eighth C site, C(9,11,12) is bonded in a distorted single-bond geometry to one C(13) and one H(5,7) atom. The C(9,11,12)-C(13) bond length is 1.40 Å. The C(9,11,12)-H(5,7) bond length is 1.09 Å. In the ninth C site, C(10) is bonded in a distorted single-bond geometry to one C(14) and one H(6,8) atom. The C(10)-C(14) bond length is 1.40 Å. The C(10)-H(6,8) bond length is 1.09 Å. In the tenth C site, C(13) is bonded in a trigonal planar geometry to one C(17); one C(29); and one C(9,11,12) atom. The C(13)-C(17) bond length is 1.41 Å. The C(13)-C(29) bond length is 1.49 Å. In the eleventh C site, C(14) is bonded in a trigonal planar geometry to one C(10), one C(18), and one C(30) atom. The C(14)-C(18) bond length is 1.41 Å. The C(14)-C(30) bond length is 1.49 Å. In the twelfth C site, C(15) is bonded in a trigonal planar geometry to one C(19); one C(31); and one C(9,11,12) atom. The C(15)-C(19) bond length is 1.41 Å. The C(15)-C(31) bond length is 1.49 Å. The C(15)-C(9,11,12) bond length is 1.40 Å. In the thirteenth C site, C(16) is bonded in a trigonal planar geometry to one C(20); one C(32); and one C(9,11,12) atom. The C(16)-C(20) bond length is 1.41 Å. The C(16)-C(32) bond length is 1.49 Å. The C(16)-C(9,11,12) bond length is 1.40 Å. In the fourteenth C site, C(17) is bonded in a trigonal planar geometry to one C(13), one C(21), and one C(33) atom. The C(17)-C(21) bond length is 1.41 Å. The C(17)-C(33) bond length is 1.51 Å. In the fifteenth C site, C(18) is bonded in a trigonal planar geometry to one C(14), one C(22), and one C(34) atom. The C(18)-C(22) bond length is 1.41 Å. The C(18)-C(34) bond length is 1.51 Å. In the sixteenth C site, C(19) is bonded in a trigonal planar geometry to one C(15), one C(23), and one C(35) atom. The C(19)-C(23) bond length is 1.41 Å. The C(19)-C(35) bond length is 1.51 Å. In the seventeenth C site, C(20) is bonded in a trigonal planar geometry to one C(16), one C(24), and one C(36) atom. The C(20)-C(24) bond length is 1.41 Å. The C(20)-C(36) bond length is 1.51 Å. In the eighteenth C site, C(21) is bonded in a distorted single-bond geometry to one C(1); one C(17); and one H(9,11,12) atom. The C(21)-H(9,11,12) bond length is 1.09 Å. In the nineteenth C site, C(22) is bonded in a distorted single-bond geometry to one C(18), one C(2), and one H(10) atom. The C(22)-H(10) bond length is 1.09 Å. In the twentieth C site, C(23) is bonded in a distorted single-bond geometry to one C(19); one C(3); and one H(9,11,12) atom. The C(23)-H(9,11,12) bond length is 1.09 Å. In the twenty-first C site, C(24) is bonded in a distorted single-bond geometry to one C(20); one C(4); and one H(9,11,12) atom. The C(24)-H(9,11,12) bond length is 1.09 Å. In the twenty-second C site, C(25) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(21) atom. The C(25)-O(1) bond length is 1.27 Å. The C(25)-O(21) bond length is 1.27 Å. In the twenty-third C site, C(26) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(2), and one O(22) atom. The C(26)-O(2) bond length is 1.27 Å. The C(26)-O(22) bond length is 1.27 Å. In the twenty-fourth C site, C(27) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(23), and one O(3) atom. The C(27)-O(23) bond length is 1.27 Å. The C(27)-O(3) bond length is 1.27 Å. In the twenty-fifth C site, C(28) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(24), and one O(4) atom. The C(28)-O(24) bond length is 1.27 Å. The C(28)-O(4) bond length is 1.28 Å. In the twenty-sixth C site, C(29) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(13), and one O(17) atom. The C(29)-O(13) bond length is 1.28 Å. The C(29)-O(17) bond length is 1.28 Å. In the twenty-seventh C site, C(30) is bonded in a distorted bent 120 degrees geometry to one C(14), one O(14), and one O(18) atom. The C(30)-O(14) bond length is 1.28 Å. The C(30)-O(18) bond length is 1.28 Å. In the twenty-eighth C site, C(31) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(15), and one O(19) atom. The C(31)-O(15) bond length is 1.28 Å. The C(31)-O(19) bond length is 1.28 Å. In the twenty-ninth C site, C(32) is bonded in a distorted bent 120 degrees geometry to one C(16), one O(16), and one O(20) atom. The C(32)-O(16) bond length is 1.28 Å. The C(32)-O(20) bond length is 1.28 Å. In the thirtieth C site, C(33) is bonded in a distorted bent 120 degrees geometry to one C(17), one O(5), and one O(9) atom. The C(33)-O(5) bond length is 1.26 Å. The C(33)-O(9) bond length is 1.29 Å. In the thirty-first C site, C(34) is bonded in a distorted bent 120 degrees geometry to one C(18), one O(10), and one O(6) atom. The C(34)-O(10) bond length is 1.29 Å. The C(34)-O(6) bond length is 1.26 Å. In the thirty-second C site, C(35) is bonded in a distorted bent 120 degrees geometry to one C(19), one O(11), and one O(7) atom. The C(35)-O(11) bond length is 1.29 Å. The C(35)-O(7) bond length is 1.26 Å. In the thirty-third C site, C(36) is bonded in a distorted bent 120 degrees geometry to one C(20), one O(12), and one O(8) atom. The C(36)-O(12) bond length is 1.29 Å. The C(36)-O(8) bond length is 1.26 Å. There are five inequivalent H sites. In the first H site, H(1,2,3,4) is bonded in a single-bond geometry to one C(5,6) atom. In the second H site, H(5,7) is bonded in a single-bond geometry to one C(9,11,12) atom. In the third H site, H(6,8) is bonded in a single-bond geometry to one C(10) atom. In the fourth H site, H(9,11,12) is bonded in a single-bond geometry to one C(21) atom. In the fifth H site, H(10) is bonded in a single-bond geometry to one C(22) atom. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(25) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Mn(2) and one C(26) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Mn(3) and one C(27) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Mn(4) and one C(28) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Mn(3) and one C(33) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Mn(4) and one C(34) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Mn(1) and one C(35) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Mn(2) and one C(36) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mn(4), one Mn(5), and one C(33) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mn(3), one Mn(6), and one C(34) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(5), and one C(35) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(6), and one C(36) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(5), and one C(29) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Mn(2), one Mn(6), and one C(30) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Mn(3), one Mn(5), and one C(31) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Mn(4), one Mn(6), and one C(32) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one C(29) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one C(30) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Mn(3), one Mn(4), and one C(31) atom. In the twentieth O site, O(20) is bonded in a 3-coordinate geometry to one Mn(3), one Mn(4), and one C(32) atom. In the twenty-first O site, O(21) is bonded in a distorted bent 120 degrees geometry to one Mn(6) and one C(25) atom. In the twenty-second O site, O(22) is bonded in a distorted bent 120 degrees geometry to one Mn(5) and one C(26) atom. In the twenty-third O site, O(23) is bonded in a distorted bent 120 degrees geometry to one Mn(6) and one C(27) atom. In the twenty-fourth O site, O(24) is bonded in a distorted bent 120 degrees geometry to one Mn(5) and one C(28) atom. Linkers: 4 [O]C(=O)c1ccc(C([O])=O)c(C([O])=O)c1. Metal clusters: 6 [Mn]. The MOF has largest included sphere 1.43 A, density 2.44 g/cm3, surface area 2131.78 m2/g, accessible volume 0.02 cm3/g