CoC17N3H12O4 crystallizes in the triclinic P1 space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted tetrahedral geometry to one N(1), one N(10), one O(1), and one O(9) atom. The Co(1)-N(1) bond length is 1.98 Å. The Co(1)-N(10) bond length is 1.99 Å. The Co(1)-O(1) bond length is 1.97 Å. The Co(1)-O(9) bond length is 1.94 Å. In the second Co site, Co(2) is bonded in a distorted tetrahedral geometry to one N(2), one N(9), one O(10), and one O(2) atom. The Co(2)-N(2) bond length is 1.98 Å. The Co(2)-N(9) bond length is 1.98 Å. The Co(2)-O(10) bond length is 1.94 Å. The Co(2)-O(2) bond length is 1.97 Å. In the third Co site, Co(3) is bonded in a distorted square pyramidal geometry to one N(12), one N(3), one O(11), one O(3), and one O(7) atom. The Co(3)-N(12) bond length is 1.90 Å. The Co(3)-N(3) bond length is 1.99 Å. The Co(3)-O(11) bond length is 1.90 Å. The Co(3)-O(3) bond length is 2.12 Å. The Co(3)-O(7) bond length is 1.95 Å. In the fourth Co site, Co(4) is bonded in a distorted tetrahedral geometry to one N(11), one N(4), one O(12), and one O(4) atom. The Co(4)-N(11) bond length is 1.98 Å. The Co(4)-N(4) bond length is 1.97 Å. The Co(4)-O(12) bond length is 1.93 Å. The Co(4)-O(4) bond length is 1.97 Å. There are sixty-eight inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(5), one O(1), and one O(5) atom. The C(1)-C(5) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.30 Å. The C(1)-O(5) bond length is 1.26 Å. In the second C site, C(2) is bonded in a bent 120 degrees geometry to one C(6), one O(2), and one O(6) atom. The C(2)-C(6) bond length is 1.49 Å. The C(2)-O(2) bond length is 1.30 Å. The C(2)-O(6) bond length is 1.26 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(3), and one O(7) atom. The C(3)-C(7) bond length is 1.48 Å. The C(3)-O(3) bond length is 1.28 Å. The C(3)-O(7) bond length is 1.29 Å. In the fourth C site, C(4) is bonded in a bent 120 degrees geometry to one C(8), one O(4), and one O(8) atom. The C(4)-C(8) bond length is 1.49 Å. The C(4)-O(4) bond length is 1.30 Å. The C(4)-O(8) bond length is 1.26 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(1), one C(29), and one C(9) atom. The C(5)-C(29) bond length is 1.40 Å. The C(5)-C(9) bond length is 1.40 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(10), one C(2), and one C(30) atom. The C(6)-C(10) bond length is 1.40 Å. The C(6)-C(30) bond length is 1.40 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(11), one C(3), and one C(31) atom. The C(7)-C(11) bond length is 1.41 Å. The C(7)-C(31) bond length is 1.40 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(12), one C(32), and one C(4) atom. The C(8)-C(12) bond length is 1.40 Å. The C(8)-C(32) bond length is 1.40 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(13), one C(5), and one H(1) atom. The C(9)-C(13) bond length is 1.39 Å. The C(9)-H(1) bond length is 1.09 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(14), one C(6), and one H(2) atom. The C(10)-C(14) bond length is 1.39 Å. The C(10)-H(2) bond length is 1.09 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(15), one C(7), and one H(3) atom. The C(11)-C(15) bond length is 1.41 Å. The C(11)-H(3) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(16), one C(8), and one H(4) atom. The C(12)-C(16) bond length is 1.39 Å. The C(12)-H(4) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one C(17), one C(21), and one C(9) atom. The C(13)-C(17) bond length is 1.49 Å. The C(13)-C(21) bond length is 1.40 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(10), one C(18), and one C(22) atom. The C(14)-C(18) bond length is 1.50 Å. The C(14)-C(22) bond length is 1.40 Å. In the fifteenth C site, C(15) is bonded in a trigonal planar geometry to one C(11), one C(19), and one C(23) atom. The C(15)-C(19) bond length is 1.52 Å. The C(15)-C(23) bond length is 1.40 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one C(12), one C(20), and one C(24) atom. The C(16)-C(20) bond length is 1.50 Å. The C(16)-C(24) bond length is 1.40 Å. In the seventeenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(13), and one O(9) atom. The C(17)-O(13) bond length is 1.25 Å. The C(17)-O(9) bond length is 1.30 Å. In the eighteenth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one C(14), one O(10), and one O(14) atom. The C(18)-O(10) bond length is 1.30 Å. The C(18)-O(14) bond length is 1.25 Å. In the nineteenth C site, C(19) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(11), and one O(15) atom. The C(19)-O(11) bond length is 1.31 Å. The C(19)-O(15) bond length is 1.25 Å. In the twentieth C site, C(20) is bonded in a distorted bent 120 degrees geometry to one C(16), one O(12), and one O(16) atom. The C(20)-O(12) bond length is 1.30 Å. The C(20)-O(16) bond length is 1.25 Å. In the twenty-first C site, C(21) is bonded in a distorted single-bond geometry to one C(13), one C(25), and one H(5) atom. The C(21)-C(25) bond length is 1.39 Å. The C(21)-H(5) bond length is 1.09 Å. In the twenty-second C site, C(22) is bonded in a distorted single-bond geometry to one C(14), one C(26), and one H(6) atom. The C(22)-C(26) bond length is 1.39 Å. The C(22)-H(6) bond length is 1.09 Å. In the twenty-third C site, C(23) is bonded in a distorted single-bond geometry to one C(15), one C(27), and one H(7) atom. The C(23)-C(27) bond length is 1.40 Å. The C(23)-H(7) bond length is 1.09 Å. In the twenty-fourth C site, C(24) is bonded in a distorted single-bond geometry to one C(16), one C(28), and one H(8) atom. The C(24)-C(28) bond length is 1.39 Å. The C(24)-H(8) bond length is 1.09 Å. In the twenty-fifth C site, C(25) is bonded in a trigonal planar geometry to one C(21), one C(29), and one C(33) atom. The C(25)-C(29) bond length is 1.40 Å. The C(25)-C(33) bond length is 1.50 Å. In the twenty-sixth C site, C(26) is bonded in a trigonal planar geometry to one C(22), one C(30), and one C(34) atom. The C(26)-C(30) bond length is 1.40 Å. The C(26)-C(34) bond length is 1.50 Å. In the twenty-seventh C site, C(27) is bonded in a trigonal planar geometry to one C(23), one C(31), and one C(35) atom. The C(27)-C(31) bond length is 1.39 Å. The C(27)-C(35) bond length is 1.51 Å. In the twenty-eighth C site, C(28) is bonded in a trigonal planar geometry to one C(24), one C(32), and one C(36) atom. The C(28)-C(32) bond length is 1.40 Å. The C(28)-C(36) bond length is 1.50 Å. In the twenty-ninth C site, C(29) is bonded in a distorted single-bond geometry to one C(25), one C(5), and one H(9) atom. The C(29)-H(9) bond length is 1.09 Å. In the thirtieth C site, C(30) is bonded in a distorted single-bond geometry to one C(26), one C(6), and one H(10) atom. The C(30)-H(10) bond length is 1.09 Å. In the thirty-first C site, C(31) is bonded in a distorted single-bond geometry to one C(27), one C(7), and one H(11) atom. The C(31)-H(11) bond length is 1.09 Å. In the thirty-second C site, C(32) is bonded in a distorted single-bond geometry to one C(28), one C(8), and one H(12) atom. The C(32)-H(12) bond length is 1.09 Å. In the thirty-third C site, C(33) is bonded in a distorted trigonal non-coplanar geometry to one C(25), one N(5), one H(13), and one H(17) atom. The C(33)-N(5) bond length is 1.47 Å. The C(33)-H(13) bond length is 1.10 Å. The C(33)-H(17) bond length is 1.10 Å. In the thirty-fourth C site, C(34) is bonded in a distorted trigonal non-coplanar geometry to one C(26), one N(6), one H(14), and one H(18) atom. The C(34)-N(6) bond length is 1.47 Å. The C(34)-H(14) bond length is 1.10 Å. The C(34)-H(18) bond length is 1.10 Å. In the thirty-fifth C site, C(35) is bonded in a distorted trigonal non-coplanar geometry to one C(27), one N(7), one H(15), and one H(19) atom. The C(35)-N(7) bond length is 1.47 Å. The C(35)-H(15) bond length is 1.10 Å. The C(35)-H(19) bond length is 1.10 Å. In the thirty-sixth C site, C(36) is bonded in a distorted trigonal non-coplanar geometry to one C(28), one N(8), one H(16), and one H(20) atom. The C(36)-N(8) bond length is 1.47 Å. The C(36)-H(16) bond length is 1.10 Å. The C(36)-H(20) bond length is 1.10 Å. In the thirty-seventh C site, C(37) is bonded in a distorted trigonal planar geometry to one C(41), one N(5), and one H(21) atom. The C(37)-C(41) bond length is 1.37 Å. The C(37)-N(5) bond length is 1.38 Å. The C(37)-H(21) bond length is 1.08 Å. In the thirty-eighth C site, C(38) is bonded in a distorted trigonal planar geometry to one C(42), one N(6), and one H(22) atom. The C(38)-C(42) bond length is 1.37 Å. The C(38)-N(6) bond length is 1.38 Å. The C(38)-H(22) bond length is 1.08 Å. In the thirty-ninth C site, C(39) is bonded in a distorted trigonal planar geometry to one C(43), one N(7), and one H(23) atom. The C(39)-C(43) bond length is 1.37 Å. The C(39)-N(7) bond length is 1.38 Å. The C(39)-H(23) bond length is 1.08 Å. In the fortieth C site, C(40) is bonded in a distorted trigonal planar geometry to one C(44), one N(8), and one H(24) atom. The C(40)-C(44) bond length is 1.37 Å. The C(40)-N(8) bond length is 1.38 Å. The C(40)-H(24) bond length is 1.08 Å. In the forty-first C site, C(41) is bonded in a distorted bent 120 degrees geometry to one C(37), one N(9), and one H(25) atom. The C(41)-N(9) bond length is 1.38 Å. The C(41)-H(25) bond length is 1.08 Å. In the forty-second C site, C(42) is bonded in a distorted bent 120 degrees geometry to one C(38), one N(10), and one H(26) atom. The C(42)-N(10) bond length is 1.38 Å. The C(42)-H(26) bond length is 1.08 Å. In the forty-third C site, C(43) is bonded in a distorted bent 120 degrees geometry to one C(39), one N(11), and one H(27) atom. The C(43)-N(11) bond length is 1.38 Å. The C(43)-H(27) bond length is 1.08 Å. In the forty-fourth C site, C(44) is bonded in a distorted bent 120 degrees geometry to one C(40), one N(12), and one H(28) atom. The C(44)-N(12) bond length is 1.38 Å. The C(44)-H(28) bond length is 1.08 Å. In the forty-fifth C site, C(45) is bonded in a trigonal planar geometry to one N(5), one N(9), and one H(29) atom. The C(45)-N(5) bond length is 1.36 Å. The C(45)-N(9) bond length is 1.33 Å. The C(45)-H(29) bond length is 1.09 Å. In the forty-sixth C site, C(46) is bonded in a trigonal planar geometry to one N(10), one N(6), and one H(30) atom. The C(46)-N(10) bond length is 1.34 Å. The C(46)-N(6) bond length is 1.36 Å. The C(46)-H(30) bond length is 1.09 Å. In the forty-seventh C site, C(47) is bonded in a trigonal planar geometry to one N(11), one N(7), and one H(31) atom. The C(47)-N(11) bond length is 1.33 Å. The C(47)-N(7) bond length is 1.36 Å. The C(47)-H(31) bond length is 1.09 Å. In the forty-eighth C site, C(48) is bonded in a trigonal planar geometry to one N(12), one N(8), and one H(32) atom. The C(48)-N(12) bond length is 1.34 Å. The C(48)-N(8) bond length is 1.36 Å. The C(48)-H(32) bond length is 1.09 Å. In the forty-ninth C site, C(49) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(33) atom. The C(49)-N(1) bond length is 1.35 Å. The C(49)-H(33) bond length is 1.09 Å. In the fiftieth C site, C(50) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(34) atom. The C(50)-N(2) bond length is 1.35 Å. The C(50)-H(34) bond length is 1.09 Å. In the fifty-first C site, C(51) is bonded in a distorted bent 120 degrees geometry to one N(3) and one H(35) atom. The C(51)-N(3) bond length is 1.35 Å. The C(51)-H(35) bond length is 1.09 Å. In the fifty-second C site, C(52) is bonded in a distorted bent 120 degrees geometry to one N(4) and one H(36) atom. The C(52)-N(4) bond length is 1.35 Å. The C(52)-H(36) bond length is 1.09 Å. In the fifty-third C site, C(53) is bonded in a distorted single-bond geometry to one C(57) and one H(37) atom. The C(53)-C(57) bond length is 1.41 Å. The C(53)-H(37) bond length is 1.09 Å. In the fifty-fourth C site, C(54) is bonded in a distorted single-bond geometry to one C(58) and one H(38) atom. The C(54)-C(58) bond length is 1.41 Å. The C(54)-H(38) bond length is 1.09 Å. In the fifty-fifth C site, C(55) is bonded in a distorted single-bond geometry to one C(59) and one H(39) atom. The C(55)-C(59) bond length is 1.41 Å. The C(55)-H(39) bond length is 1.09 Å. In the fifty-sixth C site, C(56) is bonded in a distorted single-bond geometry to one C(60) and one H(40) atom. The C(56)-C(60) bond length is 1.41 Å. The C(56)-H(40) bond length is 1.09 Å. In the fifty-seventh C site, C(57) is bonded in a trigonal planar geometry to one C(53), one C(59), and one C(61) atom. The C(57)-C(59) bond length is 1.47 Å. The C(57)-C(61) bond length is 1.41 Å. In the fifty-eighth C site, C(58) is bonded in a trigonal planar geometry to one C(54), one C(60), and one C(62) atom. The C(58)-C(60) bond length is 1.47 Å. The C(58)-C(62) bond length is 1.41 Å. In the fifty-ninth C site, C(59) is bonded in a trigonal planar geometry to one C(55), one C(57), and one C(63) atom. The C(59)-C(63) bond length is 1.41 Å. In the sixtieth C site, C(60) is bonded in a trigonal planar geometry to one C(56), one C(58), and one C(64) atom. The C(60)-C(64) bond length is 1.41 Å. In the sixty-first C site, C(61) is bonded in a distorted trigonal planar geometry to one C(57), one C(65), and one H(41) atom. The C(61)-C(65) bond length is 1.38 Å. The C(61)-H(41) bond length is 1.09 Å. In the sixty-second C site, C(62) is bonded in a distorted trigonal planar geometry to one C(58), one C(66), and one H(42) atom. The C(62)-C(66) bond length is 1.38 Å. The C(62)-H(42) bond length is 1.09 Å. In the sixty-third C site, C(63) is bonded in a distorted trigonal planar geometry to one C(59), one C(67), and one H(43) atom. The C(63)-C(67) bond length is 1.38 Å. The C(63)-H(43) bond length is 1.09 Å. In the sixty-fourth C site, C(64) is bonded in a distorted single-bond geometry to one C(60), one C(68), and one H(44) atom. The C(64)-C(68) bond length is 1.38 Å. The C(64)-H(44) bond length is 1.09 Å. In the sixty-fifth C site, C(65) is bonded in a distorted bent 120 degrees geometry to one C(61), one N(1), and one H(45) atom. The C(65)-N(1) bond length is 1.35 Å. The C(65)-H(45) bond length is 1.09 Å. In the sixty-sixth C site, C(66) is bonded in a distorted bent 120 degrees geometry to one C(62), one N(2), and one H(46) atom. The C(66)-N(2) bond length is 1.35 Å. The C(66)-H(46) bond length is 1.09 Å. In the sixty-seventh C site, C(67) is bonded in a distorted bent 120 degrees geometry to one C(63), one N(3), and one H(47) atom. The C(67)-N(3) bond length is 1.35 Å. The C(67)-H(47) bond length is 1.09 Å. In the sixty-eighth C site, C(68) is bonded in a distorted bent 120 degrees geometry to one C(64), one N(4), and one H(48) atom. The C(68)-N(4) bond length is 1.35 Å. The C(68)-H(48) bond length is 1.09 Å. There are twelve inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Co(1), one C(49), and one C(65) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Co(2), one C(50), and one C(66) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Co(3), one C(51), and one C(67) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Co(4), one C(52), and one C(68) atom. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one C(33), one C(37), and one C(45) atom. In the sixth N site, N(6) is bonded in a trigonal planar geometry to one C(34), one C(38), and one C(46) atom. In the seventh N site, N(7) is bonded in a trigonal planar geometry to one C(35), one C(39), and one C(47) atom. In the eighth N site, N(8) is bonded in a trigonal planar geometry to one C(36), one C(40), and one C(48) atom. In the ninth N site, N(9) is bonded in a trigonal planar geometry to one Co(2), one C(41), and one C(45) atom. In the tenth N site, N(10) is bonded in a trigonal planar geometry to one Co(1), one C(42), and one C(46) atom. In the eleventh N site, N(11) is bonded in a trigonal planar geometry to one Co(4), one C(43), and one C(47) atom. In the twelfth N site, N(12) is bonded in a trigonal planar geometry to one Co(3), one C(44), and one C(48) atom. There are forty-eight inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(9) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(10) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(11) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(12) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(21) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(22) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(23) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(24) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(29) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(30) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(31) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(32) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(33) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(34) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(35) atom. In the sixteenth H site, H(16) is bonded in a single-bond geometry to one C(36) atom. In the seventeenth H site, H(17) is bonded in a single-bond geometry to one C(33) atom. In the eighteenth H site, H(18) is bonded in a single-bond geometry to one C(34) atom. In the nineteenth H site, H(19) is bonded in a single-bond geometry to one C(35) atom. In the twentieth H site, H(20) is bonded in a single-bond geometry to one C(36) atom. In the twenty-first H site, H(21) is bonded in a single-bond geometry to one C(37) atom. In the twenty-second H site, H(22) is bonded in a single-bond geometry to one C(38) atom. In the twenty-third H site, H(23) is bonded in a single-bond geometry to one C(39) atom. In the twenty-fourth H site, H(24) is bonded in a single-bond geometry to one C(40) atom. In the twenty-fifth H site, H(25) is bonded in a single-bond geometry to one C(41) atom. In the twenty-sixth H site, H(26) is bonded in a single-bond geometry to one C(42) atom. In the twenty-seventh H site, H(27) is bonded in a single-bond geometry to one C(43) atom. In the twenty-eighth H site, H(28) is bonded in a single-bond geometry to one C(44) atom. In the twenty-ninth H site, H(29) is bonded in a single-bond geometry to one C(45) atom. In the thirtieth H site, H(30) is bonded in a single-bond geometry to one C(46) atom. In the thirty-first H site, H(31) is bonded in a single-bond geometry to one C(47) atom. In the thirty-second H site, H(32) is bonded in a single-bond geometry to one C(48) atom. In the thirty-third H site, H(33) is bonded in a single-bond geometry to one C(49) atom. In the thirty-fourth H site, H(34) is bonded in a single-bond geometry to one C(50) atom. In the thirty-fifth H site, H(35) is bonded in a single-bond geometry to one C(51) atom. In the thirty-sixth H site, H(36) is bonded in a single-bond geometry to one C(52) atom. In the thirty-seventh H site, H(37) is bonded in a single-bond geometry to one C(53) atom. In the thirty-eighth H site, H(38) is bonded in a single-bond geometry to one C(54) atom. In the thirty-ninth H site, H(39) is bonded in a single-bond geometry to one C(55) atom. In the fortieth H site, H(40) is bonded in a single-bond geometry to one C(56) atom. In the forty-first H site, H(41) is bonded in a single-bond geometry to one C(61) atom. In the forty-second H site, H(42) is bonded in a single-bond geometry to one C(62) atom. In the forty-third H site, H(43) is bonded in a single-bond geometry to one C(63) atom. In the forty-fourth H site, H(44) is bonded in a single-bond geometry to one C(64) atom. In the forty-fifth H site, H(45) is bonded in a single-bond geometry to one C(65) atom. In the forty-sixth H site, H(46) is bonded in a single-bond geometry to one C(66) atom. In the forty-seventh H site, H(47) is bonded in a single-bond geometry to one C(67) atom. In the forty-eighth H site, H(48) is bonded in a single-bond geometry to one C(68) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Co(1) and one C(1) atom. In the second O site, O(2) is bonded in a water-like geometry to one Co(2) and one C(2) atom. In the third O site, O(3) is bonded in a distorted L-shaped geometry to one Co(3) and one C(3) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Co(4) and one C(4) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one C(1) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one C(2) atom. In the seventh O site, O(7) is bonded in an L-shaped geometry to one Co(3) and one C(3) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one C(4) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one Co(1) and one C(17) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Co(2) and one C(18) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Co(3) and one C(19) atom. In the twelfth O site, O(12) is bonded in a water-like geometry to one Co(4) and one C(20) atom. In the thirteenth O site, O(13) is bonded in a single-bond geometry to one C(17) atom. In the fourteenth O site, O(14) is bonded in a single-bond geometry to one C(18) atom. In the fifteenth O site, O(15) is bonded in a single-bond geometry to one C(19) atom. In the sixteenth O site, O(16) is bonded in a single-bond geometry to one C(20) atom. Linkers: 2 c1cc(-c2ccncc2)ccn1 ,4 [O]C(=O)c1cc(Cn2ccnc2)cc(C([O])=O)c1. Metal clusters: 3 O=[C]O[Co]O[C]=O ,1 O=[C]O[Co]1O[C]O1. The MOF has largest included sphere 4.57 A, density 1.32 g/cm3, surface area 4169.75 m2/g, accessible volume 0.33 cm3/g