Cu4C18H6SeO15 crystallizes in the triclinic P1 space group. There are sixteen inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted rectangular see-saw-like geometry to one O(11), one O(13), one O(4), and one O(6) atom. The Cu(1)-O(11) bond length is 1.97 Å. The Cu(1)-O(13) bond length is 1.96 Å. The Cu(1)-O(4) bond length is 1.96 Å. The Cu(1)-O(6) bond length is 1.97 Å. In the second Cu site, Cu(2) is bonded in a distorted square co-planar geometry to one O(1,3); one O(10,12); one O(14); and one O(5,7) atom. The Cu(2)-O(1,3) bond length is 1.96 Å. The Cu(2)-O(10,12) bond length is 1.97 Å. The Cu(2)-O(14) bond length is 1.96 Å. The Cu(2)-O(5,7) bond length is 1.97 Å. In the third Cu site, Cu(3) is bonded in a distorted rectangular see-saw-like geometry to one O(15), one O(2), one O(8), and one O(9) atom. The Cu(3)-O(15) bond length is 1.96 Å. The Cu(3)-O(2) bond length is 1.96 Å. The Cu(3)-O(8) bond length is 1.97 Å. The Cu(3)-O(9) bond length is 1.97 Å. In the fourth Cu site, Cu(4) is bonded in a distorted square co-planar geometry to one O(1,3); one O(10,12); one O(16); and one O(5,7) atom. The Cu(4)-O(1,3) bond length is 1.96 Å. The Cu(4)-O(10,12) bond length is 1.97 Å. The Cu(4)-O(16) bond length is 1.96 Å. The Cu(4)-O(5,7) bond length is 1.97 Å. In the fifth Cu site, Cu(5) is bonded to one O(17), one O(29), one O(48), one O(49), and one O(59) atom to form corner-sharing CuO5 trigonal bipyramids. The Cu(5)-O(17) bond length is 1.93 Å. The Cu(5)-O(29) bond length is 1.98 Å. The Cu(5)-O(48) bond length is 1.96 Å. The Cu(5)-O(49) bond length is 2.00 Å. The Cu(5)-O(59) bond length is 2.26 Å. In the sixth Cu site, Cu(6) is bonded to one O(18), one O(30), one O(47), one O(50), and one O(60) atom to form corner-sharing CuO5 trigonal bipyramids. The Cu(6)-O(18) bond length is 1.92 Å. The Cu(6)-O(30) bond length is 1.97 Å. The Cu(6)-O(47) bond length is 1.96 Å. The Cu(6)-O(50) bond length is 1.99 Å. The Cu(6)-O(60) bond length is 2.26 Å. In the seventh Cu site, Cu(7) is bonded to one O(19), one O(31), one O(46), one O(51), and one O(57) atom to form corner-sharing CuO5 trigonal bipyramids. The Cu(7)-O(19) bond length is 1.92 Å. The Cu(7)-O(31) bond length is 1.98 Å. The Cu(7)-O(46) bond length is 1.96 Å. The Cu(7)-O(51) bond length is 1.99 Å. The Cu(7)-O(57) bond length is 2.22 Å. In the eighth Cu site, Cu(8) is bonded to one O(20), one O(32), one O(45), one O(52), and one O(58) atom to form corner-sharing CuO5 trigonal bipyramids. The Cu(8)-O(20) bond length is 1.93 Å. The Cu(8)-O(32) bond length is 1.97 Å. The Cu(8)-O(45) bond length is 1.96 Å. The Cu(8)-O(52) bond length is 2.00 Å. The Cu(8)-O(58) bond length is 2.23 Å. In the ninth Cu site, Cu(9) is bonded in a rectangular see-saw-like geometry to one O(25), one O(36), one O(49), and one O(53) atom. The Cu(9)-O(25) bond length is 1.90 Å. The Cu(9)-O(36) bond length is 1.90 Å. The Cu(9)-O(49) bond length is 1.99 Å. The Cu(9)-O(53) bond length is 1.93 Å. In the tenth Cu site, Cu(10) is bonded in a rectangular see-saw-like geometry to one O(26), one O(35), one O(50), and one O(54) atom. The Cu(10)-O(26) bond length is 1.90 Å. The Cu(10)-O(35) bond length is 1.90 Å. The Cu(10)-O(50) bond length is 1.97 Å. The Cu(10)-O(54) bond length is 1.91 Å. In the eleventh Cu site, Cu(11) is bonded in a rectangular see-saw-like geometry to one O(27), one O(34), one O(51), and one O(55) atom. The Cu(11)-O(27) bond length is 1.90 Å. The Cu(11)-O(34) bond length is 1.90 Å. The Cu(11)-O(51) bond length is 1.98 Å. The Cu(11)-O(55) bond length is 1.91 Å. In the twelfth Cu site, Cu(12) is bonded in a rectangular see-saw-like geometry to one O(28), one O(33), one O(52), and one O(56) atom. The Cu(12)-O(28) bond length is 1.90 Å. The Cu(12)-O(33) bond length is 1.90 Å. The Cu(12)-O(52) bond length is 1.97 Å. The Cu(12)-O(56) bond length is 1.91 Å. In the thirteenth Cu site, Cu(13) is bonded to one O(24), one O(40), one O(41), one O(53), and one O(58) atom to form distorted corner-sharing CuO5 trigonal bipyramids. The Cu(13)-O(24) bond length is 2.02 Å. The Cu(13)-O(40) bond length is 2.04 Å. The Cu(13)-O(41) bond length is 1.95 Å. The Cu(13)-O(53) bond length is 1.94 Å. The Cu(13)-O(58) bond length is 2.44 Å. In the fourteenth Cu site, Cu(14) is bonded to one O(23), one O(39), one O(42), one O(54), and one O(57) atom to form corner-sharing CuO5 trigonal bipyramids. The Cu(14)-O(23) bond length is 2.08 Å. The Cu(14)-O(39) bond length is 2.08 Å. The Cu(14)-O(42) bond length is 1.95 Å. The Cu(14)-O(54) bond length is 1.92 Å. The Cu(14)-O(57) bond length is 2.25 Å. In the fifteenth Cu site, Cu(15) is bonded to one O(22), one O(38), one O(43), one O(55), and one O(60) atom to form corner-sharing CuO5 trigonal bipyramids. The Cu(15)-O(22) bond length is 2.07 Å. The Cu(15)-O(38) bond length is 2.07 Å. The Cu(15)-O(43) bond length is 1.94 Å. The Cu(15)-O(55) bond length is 1.93 Å. The Cu(15)-O(60) bond length is 2.25 Å. In the sixteenth Cu site, Cu(16) is bonded to one O(21), one O(37), one O(44), one O(56), and one O(59) atom to form corner-sharing CuO5 trigonal bipyramids. The Cu(16)-O(21) bond length is 2.07 Å. The Cu(16)-O(37) bond length is 2.08 Å. The Cu(16)-O(44) bond length is 1.94 Å. The Cu(16)-O(56) bond length is 1.93 Å. The Cu(16)-O(59) bond length is 2.24 Å. There are seventy-one inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(5); one O(1,3); and one O(5,7) atom. The C(1)-C(5) bond length is 1.49 Å. The C(1)-O(1,3) bond length is 1.28 Å. The C(1)-O(5,7) bond length is 1.28 Å. In the second C site, C(2) is bonded in a distorted 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 1.28 Å. The C(2)-O(6) bond length is 1.28 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(7); one O(1,3); and one O(5,7) atom. The C(3)-C(7) bond length is 1.49 Å. The C(3)-O(1,3) bond length is 1.28 Å. The C(3)-O(5,7) bond length is 1.28 Å. In the fourth C site, C(4) is bonded in a distorted 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 1.28 Å. The C(4)-O(8) bond length is 1.28 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(1); one C(25,26); and one C(9) atom. The C(5)-C(25,26) 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(25,26) atom. The C(6)-C(10) bond length is 1.40 Å. The C(6)-C(25,26) 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(27), and one C(3) atom. The C(7)-C(11) bond length is 1.40 Å. The C(7)-C(27) 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(28), and one C(4) atom. The C(8)-C(12) bond length is 1.40 Å. The C(8)-C(28) 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 1.40 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 1.40 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 1.40 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 1.40 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(33), and one C(9) atom. The C(13)-C(17) bond length is 1.40 Å. The C(13)-C(33) bond length is 1.50 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(34) atom. The C(14)-C(18) bond length is 1.40 Å. The C(14)-C(34) bond length is 1.50 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(35) atom. The C(15)-C(19) bond length is 1.40 Å. The C(15)-C(35) bond length is 1.50 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(36) atom. The C(16)-C(20) bond length is 1.40 Å. The C(16)-C(36) bond length is 1.50 Å. In the seventeenth C site, C(17) is bonded in a distorted single-bond geometry to one C(13), one C(21), and one H(5) atom. The C(17)-C(21) bond length is 1.40 Å. The C(17)-H(5) bond length is 1.09 Å. In the eighteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(14), one C(22), and one H(6) atom. The C(18)-C(22) bond length is 1.40 Å. The C(18)-H(6) bond length is 1.09 Å. In the nineteenth C site, C(19) is bonded in a distorted single-bond geometry to one C(15), one C(23), and one H(7) atom. The C(19)-C(23) bond length is 1.40 Å. The C(19)-H(7) bond length is 1.09 Å. In the twentieth C site, C(20) is bonded in a distorted single-bond geometry to one C(16), one C(24), and one H(8) atom. The C(20)-C(24) bond length is 1.40 Å. The C(20)-H(8) bond length is 1.09 Å. In the twenty-first C site, C(21) is bonded in a trigonal planar geometry to one C(17); one C(25,26); and one C(29) atom. The C(21)-C(25,26) bond length is 1.40 Å. The C(21)-C(29) bond length is 1.49 Å. In the twenty-second C site, C(22) is bonded in a trigonal planar geometry to one C(18); one C(25,26); and one C(30) atom. The C(22)-C(25,26) bond length is 1.40 Å. The C(22)-C(30) bond length is 1.49 Å. In the twenty-third C site, C(23) is bonded in a trigonal planar geometry to one C(19), one C(27), and one C(31) atom. The C(23)-C(27) bond length is 1.40 Å. The C(23)-C(31) bond length is 1.49 Å. In the twenty-fourth C site, C(24) is bonded in a trigonal planar geometry to one C(20), one C(28), and one C(32) atom. The C(24)-C(28) bond length is 1.40 Å. The C(24)-C(32) bond length is 1.49 Å. In the twenty-fifth C site, C(25,26) is bonded in a distorted single-bond geometry to one C(21); one C(5); and one H(9,10,11) atom. The C(25,26)-H(9,10,11) bond length is 1.09 Å. In the twenty-sixth C site, C(27) is bonded in a distorted single-bond geometry to one C(23); one C(7); and one H(9,10,11) atom. The C(27)-H(9,10,11) bond length is 1.09 Å. In the twenty-seventh C site, C(28) is bonded in a distorted single-bond geometry to one C(24), one C(8), and one H(12) atom. The C(28)-H(12) bond length is 1.09 Å. In the twenty-eighth C site, C(29) is bonded in a distorted bent 120 degrees geometry to one C(21), one O(13), and one O(9) atom. The C(29)-O(13) bond length is 1.28 Å. The C(29)-O(9) bond length is 1.28 Å. In the twenty-ninth C site, C(30) is bonded in a distorted bent 120 degrees geometry to one C(22); one O(10,12); and one O(14) atom. The C(30)-O(10,12) bond length is 1.28 Å. The C(30)-O(14) bond length is 1.28 Å. In the thirtieth C site, C(31) is bonded in a distorted bent 120 degrees geometry to one C(23), one O(11), and one O(15) atom. The C(31)-O(11) bond length is 1.28 Å. The C(31)-O(15) bond length is 1.28 Å. In the thirty-first C site, C(32) is bonded in a distorted bent 120 degrees geometry to one C(24); one O(10,12); and one O(16) atom. The C(32)-O(10,12) bond length is 1.28 Å. The C(32)-O(16) bond length is 1.28 Å. In the thirty-second C site, C(33) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(17), and one O(21) atom. The C(33)-O(17) bond length is 1.28 Å. The C(33)-O(21) bond length is 1.27 Å. In the thirty-third C site, C(34) is bonded in a distorted bent 120 degrees geometry to one C(14), one O(18), and one O(22) atom. The C(34)-O(18) bond length is 1.28 Å. The C(34)-O(22) bond length is 1.27 Å. In the thirty-fourth C site, C(35) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(19), and one O(23) atom. The C(35)-O(19) bond length is 1.28 Å. The C(35)-O(23) bond length is 1.26 Å. In the thirty-fifth C site, C(36) is bonded in a bent 120 degrees geometry to one C(16), one O(20), and one O(24) atom. The C(36)-O(20) bond length is 1.28 Å. The C(36)-O(24) bond length is 1.27 Å. In the thirty-sixth C site, C(37) is bonded in a distorted bent 120 degrees geometry to one C(41), one O(25), and one O(29) atom. The C(37)-C(41) bond length is 1.50 Å. The C(37)-O(25) bond length is 1.28 Å. The C(37)-O(29) bond length is 1.27 Å. In the thirty-seventh C site, C(38) is bonded in a distorted bent 120 degrees geometry to one C(42), one O(26), and one O(30) atom. The C(38)-C(42) bond length is 1.49 Å. The C(38)-O(26) bond length is 1.28 Å. The C(38)-O(30) bond length is 1.27 Å. In the thirty-eighth C site, C(39) is bonded in a distorted bent 120 degrees geometry to one C(43), one O(27), and one O(31) atom. The C(39)-C(43) bond length is 1.49 Å. The C(39)-O(27) bond length is 1.28 Å. The C(39)-O(31) bond length is 1.27 Å. In the thirty-ninth C site, C(40) is bonded in a distorted bent 120 degrees geometry to one C(44), one O(28), and one O(32) atom. The C(40)-C(44) bond length is 1.49 Å. The C(40)-O(28) bond length is 1.28 Å. The C(40)-O(32) bond length is 1.27 Å. In the fortieth C site, C(41) is bonded in a trigonal planar geometry to one C(37), one C(45), and one C(61) atom. The C(41)-C(45) bond length is 1.40 Å. The C(41)-C(61) bond length is 1.40 Å. In the forty-first C site, C(42) is bonded in a trigonal planar geometry to one C(38), one C(46), and one C(62) atom. The C(42)-C(46) bond length is 1.39 Å. The C(42)-C(62) bond length is 1.40 Å. In the forty-second C site, C(43) is bonded in a trigonal planar geometry to one C(39), one C(47), and one C(63) atom. The C(43)-C(47) bond length is 1.39 Å. The C(43)-C(63) bond length is 1.40 Å. In the forty-third C site, C(44) is bonded in a trigonal planar geometry to one C(40), one C(48), and one C(64) atom. The C(44)-C(48) bond length is 1.39 Å. The C(44)-C(64) bond length is 1.40 Å. In the forty-fourth C site, C(45) is bonded in a distorted single-bond geometry to one C(41), one C(49), and one H(13) atom. The C(45)-C(49) bond length is 1.40 Å. The C(45)-H(13) bond length is 1.09 Å. In the forty-fifth C site, C(46) is bonded in a distorted single-bond geometry to one C(42), one C(50), and one H(14) atom. The C(46)-C(50) bond length is 1.40 Å. The C(46)-H(14) bond length is 1.09 Å. In the forty-sixth C site, C(47) is bonded in a distorted single-bond geometry to one C(43), one C(51), and one H(15) atom. The C(47)-C(51) bond length is 1.40 Å. The C(47)-H(15) bond length is 1.09 Å. In the forty-seventh C site, C(48) is bonded in a distorted single-bond geometry to one C(44), one C(52), and one H(16) atom. The C(48)-C(52) bond length is 1.40 Å. The C(48)-H(16) bond length is 1.09 Å. In the forty-eighth C site, C(49) is bonded in a trigonal planar geometry to one C(45), one C(53), and one C(69) atom. The C(49)-C(53) bond length is 1.40 Å. The C(49)-C(69) bond length is 1.51 Å. In the forty-ninth C site, C(50) is bonded in a trigonal planar geometry to one C(46), one C(54), and one C(70) atom. The C(50)-C(54) bond length is 1.40 Å. The C(50)-C(70) bond length is 1.50 Å. In the fiftieth C site, C(51) is bonded in a trigonal planar geometry to one C(47), one C(55), and one C(71) atom. The C(51)-C(55) bond length is 1.40 Å. The C(51)-C(71) bond length is 1.50 Å. In the fifty-first C site, C(52) is bonded in a trigonal planar geometry to one C(48), one C(56), and one C(72) atom. The C(52)-C(56) bond length is 1.40 Å. The C(52)-C(72) bond length is 1.50 Å. In the fifty-second C site, C(53) is bonded in a distorted single-bond geometry to one C(49), one C(57), and one H(17) atom. The C(53)-C(57) bond length is 1.40 Å. The C(53)-H(17) bond length is 1.09 Å. In the fifty-third C site, C(54) is bonded in a distorted single-bond geometry to one C(50), one C(58), and one H(18) atom. The C(54)-C(58) bond length is 1.40 Å. The C(54)-H(18) bond length is 1.09 Å. In the fifty-fourth C site, C(55) is bonded in a distorted single-bond geometry to one C(51), one C(59), and one H(19) atom. The C(55)-C(59) bond length is 1.40 Å. The C(55)-H(19) bond length is 1.09 Å. In the fifty-fifth C site, C(56) is bonded in a distorted single-bond geometry to one C(52), one C(60), and one H(20) atom. The C(56)-C(60) bond length is 1.40 Å. The C(56)-H(20) bond length is 1.09 Å. In the fifty-sixth C site, C(57) is bonded in a trigonal planar geometry to one C(53), one C(61), and one C(65) atom. The C(57)-C(61) bond length is 1.40 Å. The C(57)-C(65) bond length is 1.51 Å. In the fifty-seventh C site, C(58) is bonded in a trigonal planar geometry to one C(54), one C(62), and one C(66) atom. The C(58)-C(62) bond length is 1.40 Å. The C(58)-C(66) bond length is 1.50 Å. In the fifty-eighth C site, C(59) is bonded in a trigonal planar geometry to one C(55), one C(63), and one C(67) atom. The C(59)-C(63) bond length is 1.40 Å. The C(59)-C(67) bond length is 1.51 Å. In the fifty-ninth C site, C(60) is bonded in a trigonal planar geometry to one C(56), one C(64), and one C(68) atom. The C(60)-C(64) bond length is 1.40 Å. The C(60)-C(68) bond length is 1.50 Å. In the sixtieth C site, C(61) is bonded in a distorted single-bond geometry to one C(41), one C(57), and one H(21) atom. The C(61)-H(21) bond length is 1.09 Å. In the sixty-first C site, C(62) is bonded in a distorted single-bond geometry to one C(42), one C(58), and one H(22) atom. The C(62)-H(22) bond length is 1.09 Å. In the sixty-second C site, C(63) is bonded in a distorted single-bond geometry to one C(43), one C(59), and one H(23) atom. The C(63)-H(23) bond length is 1.09 Å. In the sixty-third C site, C(64) is bonded in a distorted single-bond geometry to one C(44), one C(60), and one H(24) atom. The C(64)-H(24) bond length is 1.09 Å. In the sixty-fourth C site, C(65) is bonded in a distorted bent 120 degrees geometry to one C(57), one O(33), and one O(37) atom. The C(65)-O(33) bond length is 1.29 Å. The C(65)-O(37) bond length is 1.27 Å. In the sixty-fifth C site, C(66) is bonded in a distorted bent 120 degrees geometry to one C(58), one O(34), and one O(38) atom. The C(66)-O(34) bond length is 1.29 Å. The C(66)-O(38) bond length is 1.27 Å. In the sixty-sixth C site, C(67) is bonded in a distorted bent 120 degrees geometry to one C(59), one O(35), and one O(39) atom. The C(67)-O(35) bond length is 1.29 Å. The C(67)-O(39) bond length is 1.27 Å. In the sixty-seventh C site, C(68) is bonded in a distorted bent 120 degrees geometry to one C(60), one O(36), and one O(40) atom. The C(68)-O(36) bond length is 1.28 Å. The C(68)-O(40) bond length is 1.27 Å. In the sixty-eighth C site, C(69) is bonded in a distorted bent 120 degrees geometry to one C(49), one O(41), and one O(45) atom. The C(69)-O(41) bond length is 1.28 Å. The C(69)-O(45) bond length is 1.28 Å. In the sixty-ninth C site, C(70) is bonded in a distorted bent 120 degrees geometry to one C(50), one O(42), and one O(46) atom. The C(70)-O(42) bond length is 1.27 Å. The C(70)-O(46) bond length is 1.28 Å. In the seventieth C site, C(71) is bonded in a distorted bent 120 degrees geometry to one C(51), one O(43), and one O(47) atom. The C(71)-O(43) bond length is 1.27 Å. The C(71)-O(47) bond length is 1.28 Å. In the seventy-first C site, C(72) is bonded in a distorted bent 120 degrees geometry to one C(52), one O(44), and one O(48) atom. The C(72)-O(44) bond length is 1.27 Å. The C(72)-O(48) bond length is 1.28 Å. There are twenty-two 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(17) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(18) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(19) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(20) atom. In the ninth H site, H(9,10,11) is bonded in a single-bond geometry to one C(25,26) atom. In the tenth H site, H(12) is bonded in a single-bond geometry to one C(28) atom. In the eleventh H site, H(13) is bonded in a single-bond geometry to one C(45) atom. In the twelfth H site, H(14) is bonded in a single-bond geometry to one C(46) atom. In the thirteenth H site, H(15) is bonded in a single-bond geometry to one C(47) atom. In the fourteenth H site, H(16) is bonded in a single-bond geometry to one C(48) atom. In the fifteenth H site, H(17) is bonded in a single-bond geometry to one C(53) atom. In the sixteenth H site, H(18) is bonded in a single-bond geometry to one C(54) atom. In the seventeenth H site, H(19) is bonded in a single-bond geometry to one C(55) atom. In the eighteenth H site, H(20) is bonded in a single-bond geometry to one C(56) atom. In the nineteenth H site, H(21) is bonded in a single-bond geometry to one C(61) atom. In the twentieth H site, H(22) is bonded in a single-bond geometry to one C(62) atom. In the twenty-first H site, H(23) is bonded in a single-bond geometry to one C(63) atom. In the twenty-second H site, H(24) is bonded in a single-bond geometry to one C(64) atom. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a distorted T-shaped geometry to one O(49), one O(53), and one O(57) atom. The Se(1)-O(49) bond length is 1.79 Å. The Se(1)-O(53) bond length is 1.78 Å. The Se(1)-O(57) bond length is 1.70 Å. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(50), one O(54), and one O(58) atom. The Se(2)-O(50) bond length is 1.79 Å. The Se(2)-O(54) bond length is 1.79 Å. The Se(2)-O(58) bond length is 1.69 Å. In the third Se site, Se(3) is bonded in a distorted trigonal non-coplanar geometry to one O(51), one O(55), and one O(59) atom. The Se(3)-O(51) bond length is 1.79 Å. The Se(3)-O(55) bond length is 1.79 Å. The Se(3)-O(59) bond length is 1.70 Å. In the fourth Se site, Se(4) is bonded in a distorted trigonal non-coplanar geometry to one O(52), one O(56), and one O(60) atom. The Se(4)-O(52) bond length is 1.79 Å. The Se(4)-O(56) bond length is 1.79 Å. The Se(4)-O(60) bond length is 1.70 Å. There are fifty-seven inequivalent O sites. In the first O site, O(1,3) is bonded in a distorted bent 120 degrees geometry to one Cu(4) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cu(3) and one C(2) atom. In the third O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(4) atom. In the fourth O site, O(5,7) is bonded in a distorted bent 120 degrees geometry to one Cu(2) and one C(1) atom. In the fifth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(2) atom. In the sixth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Cu(3) and one C(4) atom. In the seventh O site, O(9) is bonded in a single-bond geometry to one Cu(3) and one C(29) atom. In the eighth O site, O(10,12) is bonded in a single-bond geometry to one Cu(4) and one C(30) atom. In the ninth O site, O(11) is bonded in a single-bond geometry to one Cu(1) and one C(31) atom. In the tenth O site, O(13) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(29) atom. In the eleventh O site, O(14) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(30) atom. In the twelfth O site, O(15) is bonded in a bent 120 degrees geometry to one Cu(3) and one C(31) atom. In the thirteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Cu(4) and one C(32) atom. In the fourteenth O site, O(17) is bonded in a bent 120 degrees geometry to one Cu(5) and one C(33) atom. In the fifteenth O site, O(18) is bonded in a bent 120 degrees geometry to one Cu(6) and one C(34) atom. In the sixteenth O site, O(19) is bonded in a bent 120 degrees geometry to one Cu(7) and one C(35) atom. In the seventeenth O site, O(20) is bonded in a bent 120 degrees geometry to one Cu(8) and one C(36) atom. In the eighteenth O site, O(21) is bonded in a bent 120 degrees geometry to one Cu(16) and one C(33) atom. In the nineteenth O site, O(22) is bonded in a bent 120 degrees geometry to one Cu(15) and one C(34) atom. In the twentieth O site, O(23) is bonded in a bent 120 degrees geometry to one Cu(14) and one C(35) atom. In the twenty-first O site, O(24) is bonded in a bent 120 degrees geometry to one Cu(13) and one C(36) atom. In the twenty-second O site, O(25) is bonded in a bent 120 degrees geometry to one Cu(9) and one C(37) atom. In the twenty-third O site, O(26) is bonded in a bent 120 degrees geometry to one Cu(10) and one C(38) atom. In the twenty-fourth O site, O(27) is bonded in a bent 120 degrees geometry to one Cu(11) and one C(39) atom. In the twenty-fifth O site, O(28) is bonded in a bent 120 degrees geometry to one Cu(12) and one C(40) atom. In the twenty-sixth O site, O(29) is bonded in a distorted bent 150 degrees geometry to one Cu(5) and one C(37) atom. In the twenty-seventh O site, O(30) is bonded in a distorted bent 150 degrees geometry to one Cu(6) and one C(38) atom. In the twenty-eighth O site, O(31) is bonded in a distorted bent 150 degrees geometry to one Cu(7) and one C(39) atom. In the twenty-ninth O site, O(32) is bonded in a distorted bent 150 degrees geometry to one Cu(8) and one C(40) atom. In the thirtieth O site, O(33) is bonded in a bent 120 degrees geometry to one Cu(12) and one C(65) atom. In the thirty-first O site, O(34) is bonded in a bent 120 degrees geometry to one Cu(11) and one C(66) atom. In the thirty-second O site, O(35) is bonded in a bent 120 degrees geometry to one Cu(10) and one C(67) atom. In the thirty-third O site, O(36) is bonded in a bent 120 degrees geometry to one Cu(9) and one C(68) atom. In the thirty-fourth O site, O(37) is bonded in a distorted bent 150 degrees geometry to one Cu(16) and one C(65) atom. In the thirty-fifth O site, O(38) is bonded in a distorted bent 150 degrees geometry to one Cu(15) and one C(66) atom. In the thirty-sixth O site, O(39) is bonded in a distorted bent 150 degrees geometry to one Cu(14) and one C(67) atom. In the thirty-seventh O site, O(40) is bonded in a distorted bent 120 degrees geometry to one Cu(13) and one C(68) atom. In the thirty-eighth O site, O(41) is bonded in a distorted bent 120 degrees geometry to one Cu(13) and one C(69) atom. In the thirty-ninth O site, O(42) is bonded in a bent 120 degrees geometry to one Cu(14) and one C(70) atom. In the fortieth O site, O(43) is bonded in a bent 120 degrees geometry to one Cu(15) and one C(71) atom. In the forty-first O site, O(44) is bonded in a bent 120 degrees geometry to one Cu(16) and one C(72) atom. In the forty-second O site, O(45) is bonded in a distorted bent 150 degrees geometry to one Cu(8) and one C(69) atom. In the forty-third O site, O(46) is bonded in a distorted bent 150 degrees geometry to one Cu(7) and one C(70) atom. In the forty-fourth O site, O(47) is bonded in a distorted bent 150 degrees geometry to one Cu(6) and one C(71) atom. In the forty-fifth O site, O(48) is bonded in a distorted bent 150 degrees geometry to one Cu(5) and one C(72) atom. In the forty-sixth O site, O(49) is bonded in a trigonal non-coplanar geometry to one Cu(5), one Cu(9), and one Se(1) atom. In the forty-seventh O site, O(50) is bonded in a trigonal non-coplanar geometry to one Cu(10), one Cu(6), and one Se(2) atom. In the forty-eighth O site, O(51) is bonded in a trigonal non-coplanar geometry to one Cu(11), one Cu(7), and one Se(3) atom. In the forty-ninth O site, O(52) is bonded in a trigonal non-coplanar geometry to one Cu(12), one Cu(8), and one Se(4) atom. In the fiftieth O site, O(53) is bonded in a trigonal planar geometry to one Cu(13), one Cu(9), and one Se(1) atom. In the fifty-first O site, O(54) is bonded in a distorted trigonal planar geometry to one Cu(10), one Cu(14), and one Se(2) atom. In the fifty-second O site, O(55) is bonded in a distorted trigonal planar geometry to one Cu(11), one Cu(15), and one Se(3) atom. In the fifty-third O site, O(56) is bonded in a distorted trigonal planar geometry to one Cu(12), one Cu(16), and one Se(4) atom. In the fifty-fourth O site, O(57) is bonded in a distorted trigonal planar geometry to one Cu(14), one Cu(7), and one Se(1) atom. In the fifty-fifth O site, O(58) is bonded in a distorted trigonal planar geometry to one Cu(13), one Cu(8), and one Se(2) atom. In the fifty-sixth O site, O(59) is bonded in a distorted trigonal planar geometry to one Cu(16), one Cu(5), and one Se(3) atom. In the fifty-seventh O site, O(60) is bonded in a distorted trigonal planar geometry to one Cu(15), one Cu(6), and one Se(4) atom. Linkers: 8 [O]C(=O)c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 2 [C]1O[Cu]234O[C]O[Cu]2(O1)(O[C]O3)O[C]O4 ,12 [Cu]. The MOF has largest included sphere 6.43 A, density 1.53 g/cm3, surface area 2807.55 m2/g, accessible volume 0.33 cm3/g