Co5H38(C9O4)6 crystallizes in the orthorhombic Pna2_1 space group. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(12), one O(14), one O(16), one O(18), and one O(5) atom to form distorted corner-sharing CoO5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 73°. The Co(1)-O(12) bond length is 2.08 Å. The Co(1)-O(14) bond length is 2.18 Å. The Co(1)-O(16) bond length is 2.02 Å. The Co(1)-O(18) bond length is 2.18 Å. The Co(1)-O(5) bond length is 2.18 Å. In the second Co site, Co(2) is bonded to one O(11), one O(19), one O(2), one O(4), and one O(7) atom to form distorted corner-sharing CoO5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 73°. The Co(2)-O(11) bond length is 2.07 Å. The Co(2)-O(19) bond length is 2.02 Å. The Co(2)-O(2) bond length is 2.23 Å. The Co(2)-O(4) bond length is 2.16 Å. The Co(2)-O(7) bond length is 2.16 Å. In the third Co site, Co(3) is bonded to one O(10), one O(14), one O(17), one O(20), one O(3), and one O(7) atom to form corner-sharing CoO6 octahedra. The Co(3)-O(10) bond length is 2.07 Å. The Co(3)-O(14) bond length is 2.16 Å. The Co(3)-O(17) bond length is 2.09 Å. The Co(3)-O(20) bond length is 2.08 Å. The Co(3)-O(3) bond length is 2.09 Å. The Co(3)-O(7) bond length is 2.16 Å. In the fourth Co site, Co(4) is bonded in a distorted trigonal non-coplanar geometry to one O(22), one O(24), and one O(9) atom. The Co(4)-O(22) bond length is 1.99 Å. The Co(4)-O(24) bond length is 1.98 Å. The Co(4)-O(9) bond length is 1.98 Å. In the fifth Co site, Co(5) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(6), and one O(8) atom. The Co(5)-O(1) bond length is 1.98 Å. The Co(5)-O(6) bond length is 1.98 Å. The Co(5)-O(8) bond length is 1.98 Å. There are fifty-four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal non-coplanar geometry to one C(17); one H(28); and two equivalent H(2,37) atoms. The C(1)-C(17) bond length is 1.50 Å. The C(1)-H(28) bond length is 0.96 Å. Both C(1)-H(2,37) bond lengths are 0.96 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(30), one O(11), and one O(3) atom. The C(2)-C(30) bond length is 1.50 Å. The C(2)-O(11) bond length is 1.27 Å. The C(2)-O(3) bond length is 1.25 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(46), one O(14), and one O(18) atom. The C(3)-C(46) bond length is 1.49 Å. The C(3)-O(14) bond length is 1.27 Å. The C(3)-O(18) bond length is 1.26 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(24), one C(33), and one C(39) atom. The C(4)-C(24) bond length is 1.51 Å. The C(4)-C(33) bond length is 1.39 Å. The C(4)-C(39) bond length is 1.40 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(22), one C(44), and one C(53) atom. The C(5)-C(22) bond length is 1.37 Å. The C(5)-C(44) bond length is 1.41 Å. The C(5)-C(53) bond length is 1.50 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(23), one C(48), and one H(1) atom. The C(6)-C(23) bond length is 1.41 Å. The C(6)-C(48) bond length is 1.38 Å. The C(6)-H(1) bond length is 0.93 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(16), one C(38), and one H(18) atom. The C(7)-C(16) bond length is 1.37 Å. The C(7)-C(38) bond length is 1.41 Å. The C(7)-H(18) bond length is 0.93 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(22), one C(27), and one C(34) atom. The C(8)-C(22) bond length is 1.38 Å. The C(8)-C(27) bond length is 1.48 Å. The C(8)-C(34) bond length is 1.39 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(46), one C(54), and one H(31) atom. The C(9)-C(46) bond length is 1.40 Å. The C(9)-C(54) bond length is 1.40 Å. The C(9)-H(31) bond length is 0.93 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(36), one C(52), and one H(8) atom. The C(10)-C(36) bond length is 1.38 Å. The C(10)-C(52) bond length is 1.40 Å. The C(10)-H(8) bond length is 0.93 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(12), one C(16), and one H(9) atom. The C(11)-C(12) bond length is 1.39 Å. The C(11)-C(16) bond length is 1.40 Å. The C(11)-H(9) bond length is 0.93 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(11), one C(31), and one C(43) atom. The C(12)-C(31) bond length is 1.49 Å. The C(12)-C(43) bond length is 1.39 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one C(18), one C(26), and one C(35) atom. The C(13)-C(18) bond length is 1.40 Å. The C(13)-C(26) bond length is 1.50 Å. The C(13)-C(35) bond length is 1.40 Å. In the fourteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(29), one C(36), and one H(27) atom. The C(14)-C(29) bond length is 1.39 Å. The C(14)-C(36) bond length is 1.40 Å. The C(14)-H(27) bond length is 0.93 Å. In the fifteenth C site, C(15) is bonded in a trigonal non-coplanar geometry to one C(48) and three equivalent H(15,22,25) atoms. The C(15)-C(48) bond length is 1.53 Å. All C(15)-H(15,22,25) bond lengths are 0.96 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one C(11), one C(50), and one C(7) atom. The C(16)-C(50) bond length is 1.51 Å. In the seventeenth C site, C(17) is bonded in a trigonal planar geometry to one C(1), one C(19), and one C(40) atom. The C(17)-C(19) bond length is 1.37 Å. The C(17)-C(40) bond length is 1.38 Å. In the eighteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(13), one C(54), and one H(29) atom. The C(18)-C(54) bond length is 1.38 Å. The C(18)-H(29) bond length is 0.93 Å. In the nineteenth C site, C(19) is bonded in a distorted single-bond geometry to one C(17), one C(21), and one H(36) atom. The C(19)-C(21) bond length is 1.40 Å. The C(19)-H(36) bond length is 0.93 Å. In the twentieth C site, C(20) is bonded in a trigonal non-coplanar geometry to one C(54); one H(19); and two equivalent H(3,32) atoms. The C(20)-C(54) bond length is 1.51 Å. The C(20)-H(19) bond length is 0.96 Å. Both C(20)-H(3,32) bond lengths are 0.96 Å. In the twenty-first C site, C(21) is bonded in a trigonal planar geometry to one C(19), one C(25), and one C(47) atom. The C(21)-C(25) bond length is 1.49 Å. The C(21)-C(47) bond length is 1.40 Å. In the twenty-second C site, C(22) is bonded in a distorted single-bond geometry to one C(5), one C(8), and one H(24) atom. The C(22)-H(24) bond length is 0.93 Å. In the twenty-third C site, C(23) is bonded in a trigonal planar geometry to one C(28), one C(33), and one C(6) atom. The C(23)-C(28) bond length is 1.47 Å. The C(23)-C(33) bond length is 1.40 Å. In the twenty-fourth C site, C(24) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(24), and one O(5) atom. The C(24)-O(24) bond length is 1.26 Å. The C(24)-O(5) bond length is 1.24 Å. In the twenty-fifth C site, C(25) is bonded in a bent 120 degrees geometry to one C(21), one O(13), and one O(22) atom. The C(25)-O(13) bond length is 1.22 Å. The C(25)-O(22) bond length is 1.29 Å. In the twenty-sixth C site, C(26) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(16), and one O(17) atom. The C(26)-O(16) bond length is 1.26 Å. The C(26)-O(17) bond length is 1.25 Å. In the twenty-seventh C site, C(27) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(1), and one O(4) atom. The C(27)-O(1) bond length is 1.26 Å. The C(27)-O(4) bond length is 1.26 Å. In the twenty-eighth C site, C(28) is bonded in a distorted bent 120 degrees geometry to one C(23), one O(2), and one O(7) atom. The C(28)-O(2) bond length is 1.25 Å. The C(28)-O(7) bond length is 1.28 Å. In the twenty-ninth C site, C(29) is bonded in a trigonal planar geometry to one C(14), one C(32), and one C(42) atom. The C(29)-C(32) bond length is 1.40 Å. The C(29)-C(42) bond length is 1.50 Å. In the thirtieth C site, C(30) is bonded in a trigonal planar geometry to one C(2), one C(40), and one C(47) atom. The C(30)-C(40) bond length is 1.41 Å. The C(30)-C(47) bond length is 1.37 Å. In the thirty-first C site, C(31) is bonded in a bent 120 degrees geometry to one C(12), one O(21), and one O(6) atom. The C(31)-O(21) bond length is 1.25 Å. The C(31)-O(6) bond length is 1.29 Å. In the thirty-second C site, C(32) is bonded in a distorted single-bond geometry to one C(29), one C(52), and one H(23) atom. The C(32)-C(52) bond length is 1.39 Å. The C(32)-H(23) bond length is 0.93 Å. In the thirty-third C site, C(33) is bonded in a distorted single-bond geometry to one C(23), one C(4), and one H(34) atom. The C(33)-H(34) bond length is 0.93 Å. In the thirty-fourth C site, C(34) is bonded in a distorted single-bond geometry to one C(45), one C(8), and one H(14) atom. The C(34)-C(45) bond length is 1.40 Å. The C(34)-H(14) bond length is 0.93 Å. In the thirty-fifth C site, C(35) is bonded in a distorted single-bond geometry to one C(13), one C(46), and one H(21) atom. The C(35)-C(46) bond length is 1.39 Å. The C(35)-H(21) bond length is 0.93 Å. In the thirty-sixth C site, C(36) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(49) atom. The C(36)-C(49) bond length is 1.50 Å. In the thirty-seventh C site, C(37) is bonded in a trigonal non-coplanar geometry to one C(52) and three equivalent H(16,17,33) atoms. The C(37)-C(52) bond length is 1.51 Å. All C(37)-H(16,17,33) bond lengths are 0.96 Å. In the thirty-eighth C site, C(38) is bonded in a trigonal planar geometry to one C(41), one C(43), and one C(7) atom. The C(38)-C(41) bond length is 1.52 Å. The C(38)-C(43) bond length is 1.39 Å. In the thirty-ninth C site, C(39) is bonded in a distorted single-bond geometry to one C(4), one C(48), and one H(26) atom. The C(39)-C(48) bond length is 1.38 Å. The C(39)-H(26) bond length is 0.93 Å. In the fortieth C site, C(40) is bonded in a distorted single-bond geometry to one C(17), one C(30), and one H(11) atom. The C(40)-H(11) bond length is 0.93 Å. In the forty-first C site, C(41) is bonded in a trigonal non-coplanar geometry to one C(38) and three equivalent H(5,13,38) atoms. All C(41)-H(5,13,38) bond lengths are 0.96 Å. In the forty-second C site, C(42) is bonded in a distorted bent 120 degrees geometry to one C(29), one O(15), and one O(9) atom. The C(42)-O(15) bond length is 1.25 Å. The C(42)-O(9) bond length is 1.28 Å. In the forty-third C site, C(43) is bonded in a distorted single-bond geometry to one C(12), one C(38), and one H(12) atom. The C(43)-H(12) bond length is 0.93 Å. In the forty-fourth C site, C(44) is bonded in a distorted single-bond geometry to one C(45), one C(5), and one H(35) atom. The C(44)-C(45) bond length is 1.38 Å. The C(44)-H(35) bond length is 0.93 Å. In the forty-fifth C site, C(45) is bonded in a trigonal planar geometry to one C(34), one C(44), and one C(51) atom. The C(45)-C(51) bond length is 1.53 Å. In the forty-sixth C site, C(46) is bonded in a trigonal planar geometry to one C(3), one C(35), and one C(9) atom. In the forty-seventh C site, C(47) is bonded in a distorted single-bond geometry to one C(21), one C(30), and one H(7) atom. The C(47)-H(7) bond length is 0.93 Å. In the forty-eighth C site, C(48) is bonded in a trigonal planar geometry to one C(15), one C(39), and one C(6) atom. In the forty-ninth C site, C(49) is bonded in a distorted bent 120 degrees geometry to one C(36), one O(19), and one O(20) atom. The C(49)-O(19) bond length is 1.24 Å. The C(49)-O(20) bond length is 1.26 Å. In the fiftieth C site, C(50) is bonded in a distorted bent 120 degrees geometry to one C(16), one O(10), and one O(12) atom. The C(50)-O(10) bond length is 1.26 Å. The C(50)-O(12) bond length is 1.27 Å. In the fifty-first C site, C(51) is bonded in a trigonal non-coplanar geometry to one C(45); one H(10); and two equivalent H(4,30) atoms. The C(51)-H(10) bond length is 0.96 Å. Both C(51)-H(4,30) bond lengths are 0.96 Å. In the fifty-second C site, C(52) is bonded in a trigonal planar geometry to one C(10), one C(32), and one C(37) atom. In the fifty-third C site, C(53) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(23), and one O(8) atom. The C(53)-O(23) bond length is 1.24 Å. The C(53)-O(8) bond length is 1.27 Å. In the fifty-fourth C site, C(54) is bonded in a trigonal planar geometry to one C(18), one C(20), and one C(9) atom. There are twenty-nine inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(6) atom. In the second H site, H(2,37) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(3,32) is bonded in a single-bond geometry to one C(20) atom. In the fourth H site, H(4,30) is bonded in a single-bond geometry to one C(51) atom. In the fifth H site, H(5,13,38) is bonded in a single-bond geometry to one C(41) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(6) atom. The H(6)-O(6) bond length is 0.93 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(47) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(10) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(11) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(51) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(40) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(43) atom. In the thirteenth H site, H(14) is bonded in a single-bond geometry to one C(34) atom. In the fourteenth H site, H(15,22,25) is bonded in a single-bond geometry to one C(15) atom. In the fifteenth H site, H(16,17,33) is bonded in a single-bond geometry to one C(37) atom. In the sixteenth H site, H(18) is bonded in a single-bond geometry to one C(7) atom. In the seventeenth H site, H(19) is bonded in a single-bond geometry to one C(20) atom. In the eighteenth H site, H(20) is bonded in a single-bond geometry to one O(22) atom. The H(20)-O(22) bond length is 0.93 Å. In the nineteenth H site, H(21) is bonded in a single-bond geometry to one C(35) atom. In the twentieth H site, H(23) is bonded in a single-bond geometry to one C(32) atom. In the twenty-first H site, H(24) is bonded in a single-bond geometry to one C(22) atom. In the twenty-second H site, H(26) is bonded in a single-bond geometry to one C(39) atom. In the twenty-third H site, H(27) is bonded in a single-bond geometry to one C(14) atom. In the twenty-fourth H site, H(28) is bonded in a single-bond geometry to one C(1) atom. In the twenty-fifth H site, H(29) is bonded in a single-bond geometry to one C(18) atom. In the twenty-sixth H site, H(31) is bonded in a single-bond geometry to one C(9) atom. In the twenty-seventh H site, H(34) is bonded in a single-bond geometry to one C(33) atom. In the twenty-eighth H site, H(35) is bonded in a single-bond geometry to one C(44) atom. In the twenty-ninth H site, H(36) is bonded in a single-bond geometry to one C(19) atom. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Co(5) and one C(27) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Co(2) and one C(28) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Co(3) and one C(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one C(27) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one C(24) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Co(5), one C(31), and one H(6) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Co(2), one Co(3), and one C(28) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one Co(5) and one C(53) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one Co(4) and one C(42) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Co(3) and one C(50) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Co(2) and one C(2) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Co(1) and one C(50) atom. In the thirteenth O site, O(13) is bonded in a single-bond geometry to one C(25) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Co(1), one Co(3), and one C(3) atom. In the fifteenth O site, O(15) is bonded in a single-bond geometry to one C(42) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Co(1) and one C(26) atom. In the seventeenth O site, O(17) is bonded in a distorted bent 120 degrees geometry to one Co(3) and one C(26) atom. In the eighteenth O site, O(18) is bonded in a distorted single-bond geometry to one Co(1) and one C(3) atom. In the nineteenth O site, O(19) is bonded in a bent 120 degrees geometry to one Co(2) and one C(49) atom. In the twentieth O site, O(20) is bonded in a distorted bent 150 degrees geometry to one Co(3) and one C(49) atom. In the twenty-first O site, O(21) is bonded in a single-bond geometry to one C(31) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Co(4), one C(25), and one H(20) atom. In the twenty-third O site, O(23) is bonded in a single-bond geometry to one C(53) atom. In the twenty-fourth O site, O(24) is bonded in a distorted bent 120 degrees geometry to one Co(4) and one C(24) atom. Linkers: 16 Cc1cc(C([O])=O)cc(C([O])=O)c1 ,8 Cc1cc(C([O])=O)cc(C(=O)O)c1. Metal clusters: 4 O=[C]O.O=[C]O.O=[C]O[Co]O[C]O[Co]12O[C]O[Co]34(O[C]O1)(O[C]O2)O[C]O[Co](O[C]O[Co]O[C]=O)(O[C]O3)O[C]O4. RCSR code: bcu. The MOF has largest included sphere 6.28 A, density 1.41 g/cm3, surface area 4033.20 m2/g, accessible volume 0.28 cm3/g