ZnH4(C2O)6 crystallizes in the triclinic P-1 space group. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 3-coordinate geometry to one O(16), one O(4), and one O(8) atom. The Zn(1)-O(16) bond length is 1.93 Å. The Zn(1)-O(4) bond length is 2.01 Å. The Zn(1)-O(8) bond length is 2.02 Å. In the second Zn site, Zn(2) is bonded in a trigonal bipyramidal geometry to one O(12), one O(3), one O(5), one O(6), and one O(7) atom. The Zn(2)-O(12) bond length is 2.03 Å. The Zn(2)-O(3) bond length is 2.08 Å. The Zn(2)-O(5) bond length is 1.96 Å. The Zn(2)-O(6) bond length is 2.01 Å. The Zn(2)-O(7) bond length is 2.06 Å. In the third Zn site, Zn(3) is bonded in a trigonal bipyramidal geometry to one O(14), one O(15), one O(17), one O(2), and one O(24) atom. The Zn(3)-O(14) bond length is 2.06 Å. The Zn(3)-O(15) bond length is 2.02 Å. The Zn(3)-O(17) bond length is 2.02 Å. The Zn(3)-O(2) bond length is 1.97 Å. The Zn(3)-O(24) bond length is 2.05 Å. In the fourth Zn site, Zn(4) is bonded in a rectangular see-saw-like geometry to one O(1), one O(18), one O(21), and one O(9) atom. The Zn(4)-O(1) bond length is 1.99 Å. The Zn(4)-O(18) bond length is 2.04 Å. The Zn(4)-O(21) bond length is 2.32 Å. The Zn(4)-O(9) bond length is 1.99 Å. There are forty-eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(22), one C(39), and one H(1) atom. The C(1)-C(22) bond length is 1.39 Å. The C(1)-C(39) bond length is 1.40 Å. The C(1)-H(1) bond length is 0.95 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(18), one C(3), and one C(8) atom. The C(2)-C(18) bond length is 1.41 Å. The C(2)-C(3) bond length is 1.50 Å. The C(2)-C(8) bond length is 1.39 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(11), and one O(4) atom. The C(3)-O(11) bond length is 1.24 Å. The C(3)-O(4) bond length is 1.28 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(15), one C(30), and one H(2) atom. The C(4)-C(15) bond length is 1.38 Å. The C(4)-C(30) bond length is 1.39 Å. The C(4)-H(2) bond length is 0.95 Å. In the fifth C site, C(5) is bonded in a bent 120 degrees geometry to one C(11), one O(15), and one O(17) atom. The C(5)-C(11) bond length is 1.50 Å. The C(5)-O(15) bond length is 1.23 Å. The C(5)-O(17) bond length is 1.24 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(18), one C(25), and one H(3) atom. The C(6)-C(18) bond length is 1.40 Å. The C(6)-C(25) bond length is 1.40 Å. The C(6)-H(3) bond length is 0.95 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(25), one O(10), and one O(9) atom. The C(7)-C(25) bond length is 1.49 Å. The C(7)-O(10) bond length is 1.24 Å. The C(7)-O(9) bond length is 1.27 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(14), one C(2), and one H(4) atom. The C(8)-C(14) bond length is 1.39 Å. The C(8)-H(4) bond length is 0.95 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(17), one C(18), and one C(36) atom. The C(9)-C(17) bond length is 1.39 Å. The C(9)-C(18) bond length is 1.50 Å. The C(9)-C(36) bond length is 1.39 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(29), one O(13), and one O(2) atom. The C(10)-C(29) bond length is 1.51 Å. The C(10)-O(13) bond length is 1.25 Å. The C(10)-O(2) bond length is 1.27 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one C(12), one C(24), and one C(5) atom. The C(11)-C(12) bond length is 1.38 Å. The C(11)-C(24) bond length is 1.40 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(29), and one H(5) atom. The C(12)-C(29) bond length is 1.40 Å. The C(12)-H(5) bond length is 0.95 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one C(20), one C(30), and one C(40) atom. The C(13)-C(20) bond length is 1.51 Å. The C(13)-C(30) bond length is 1.41 Å. The C(13)-C(40) bond length is 1.39 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(25), one C(32), and one C(8) atom. The C(14)-C(25) bond length is 1.42 Å. The C(14)-C(32) bond length is 1.50 Å. In the fifteenth C site, C(15) is bonded in a trigonal planar geometry to one C(19), one C(4), and one C(48) atom. The C(15)-C(19) bond length is 1.41 Å. The C(15)-C(48) bond length is 1.51 Å. In the sixteenth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(27), one O(23), and one O(5) atom. The C(16)-C(27) bond length is 1.51 Å. The C(16)-O(23) bond length is 1.24 Å. The C(16)-O(5) bond length is 1.28 Å. In the seventeenth C site, C(17) is bonded in a distorted single-bond geometry to one C(27), one C(9), and one H(6) atom. The C(17)-C(27) bond length is 1.40 Å. The C(17)-H(6) bond length is 0.95 Å. In the eighteenth C site, C(18) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(9) atom. In the nineteenth C site, C(19) is bonded in a trigonal planar geometry to one C(15), one C(40), and one C(47) atom. The C(19)-C(40) bond length is 1.40 Å. The C(19)-C(47) bond length is 1.50 Å. In the twentieth C site, C(20) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(1), and one O(22) atom. The C(20)-O(1) bond length is 1.27 Å. The C(20)-O(22) bond length is 1.24 Å. In the twenty-first C site, C(21) is bonded in a trigonal planar geometry to one C(34), one C(35), and one C(37) atom. The C(21)-C(34) bond length is 1.38 Å. The C(21)-C(35) bond length is 1.41 Å. The C(21)-C(37) bond length is 1.50 Å. In the twenty-second C site, C(22) is bonded in a trigonal planar geometry to one C(1), one C(30), and one C(44) atom. The C(22)-C(30) bond length is 1.49 Å. The C(22)-C(44) bond length is 1.38 Å. In the twenty-third C site, C(23) is bonded in a bent 120 degrees geometry to one C(28), one O(12), and one O(6) atom. The C(23)-C(28) bond length is 1.50 Å. The C(23)-O(12) bond length is 1.25 Å. The C(23)-O(6) bond length is 1.27 Å. In the twenty-fourth C site, C(24) is bonded in a distorted single-bond geometry to one C(11), one C(32), and one H(7) atom. The C(24)-C(32) bond length is 1.39 Å. The C(24)-H(7) bond length is 0.95 Å. In the twenty-fifth C site, C(25) is bonded in a trigonal planar geometry to one C(14), one C(6), and one C(7) atom. In the twenty-sixth C site, C(26) is bonded in a distorted bent 120 degrees geometry to one C(41), one O(16), and one O(20) atom. The C(26)-C(41) bond length is 1.49 Å. The C(26)-O(16) bond length is 1.28 Å. The C(26)-O(20) bond length is 1.25 Å. In the twenty-seventh C site, C(27) is bonded in a trigonal planar geometry to one C(16), one C(17), and one C(31) atom. The C(27)-C(31) bond length is 1.40 Å. In the twenty-eighth C site, C(28) is bonded in a trigonal planar geometry to one C(23), one C(31), and one C(36) atom. The C(28)-C(31) bond length is 1.39 Å. The C(28)-C(36) bond length is 1.41 Å. In the twenty-ninth C site, C(29) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(43) atom. The C(29)-C(43) bond length is 1.40 Å. In the thirtieth C site, C(30) is bonded in a trigonal planar geometry to one C(13), one C(22), and one C(4) atom. In the thirty-first C site, C(31) is bonded in a distorted single-bond geometry to one C(27), one C(28), and one H(8) atom. The C(31)-H(8) bond length is 0.95 Å. In the thirty-second C site, C(32) is bonded in a trigonal planar geometry to one C(14), one C(24), and one C(43) atom. The C(32)-C(43) bond length is 1.40 Å. In the thirty-third C site, C(33) is bonded in a distorted trigonal planar geometry to one C(39), one C(46), and one H(9) atom. The C(33)-C(39) bond length is 1.39 Å. The C(33)-C(46) bond length is 1.39 Å. The C(33)-H(9) bond length is 0.95 Å. In the thirty-fourth C site, C(34) is bonded in a distorted single-bond geometry to one C(21), one C(47), and one H(10) atom. The C(34)-C(47) bond length is 1.40 Å. The C(34)-H(10) bond length is 0.95 Å. In the thirty-fifth C site, C(35) is bonded in a distorted trigonal planar geometry to one C(21), one C(41), and one H(11) atom. The C(35)-C(41) bond length is 1.40 Å. The C(35)-H(11) bond length is 0.95 Å. In the thirty-sixth C site, C(36) is bonded in a distorted single-bond geometry to one C(28), one C(9), and one H(12) atom. The C(36)-H(12) bond length is 0.95 Å. In the thirty-seventh C site, C(37) is bonded in a bent 120 degrees geometry to one C(21), one O(3), and one O(7) atom. The C(37)-O(3) bond length is 1.27 Å. The C(37)-O(7) bond length is 1.25 Å. In the thirty-eighth C site, C(38) is bonded in a bent 120 degrees geometry to one C(39), one O(14), and one O(24) atom. The C(38)-C(39) bond length is 1.51 Å. The C(38)-O(14) bond length is 1.25 Å. The C(38)-O(24) bond length is 1.22 Å. In the thirty-ninth C site, C(39) is bonded in a trigonal planar geometry to one C(1), one C(33), and one C(38) atom. In the fortieth C site, C(40) is bonded in a distorted single-bond geometry to one C(13), one C(19), and one H(13) atom. The C(40)-H(13) bond length is 0.95 Å. In the forty-first C site, C(41) is bonded in a trigonal planar geometry to one C(26), one C(35), and one C(42) atom. The C(41)-C(42) bond length is 1.40 Å. In the forty-second C site, C(42) is bonded in a distorted single-bond geometry to one C(41), one C(47), and one H(14) atom. The C(42)-C(47) bond length is 1.38 Å. The C(42)-H(14) bond length is 0.95 Å. In the forty-third C site, C(43) is bonded in a distorted single-bond geometry to one C(29), one C(32), and one H(15) atom. The C(43)-H(15) bond length is 0.95 Å. In the forty-fourth C site, C(44) is bonded in a distorted single-bond geometry to one C(22), one C(46), and one H(16) atom. The C(44)-C(46) bond length is 1.39 Å. The C(44)-H(16) bond length is 0.95 Å. In the forty-fifth C site, C(45) is bonded in a bent 120 degrees geometry to one C(46), one O(18), and one O(21) atom. The C(45)-C(46) bond length is 1.51 Å. The C(45)-O(18) bond length is 1.28 Å. The C(45)-O(21) bond length is 1.23 Å. In the forty-sixth C site, C(46) is bonded in a trigonal planar geometry to one C(33), one C(44), and one C(45) atom. In the forty-seventh C site, C(47) is bonded in a trigonal planar geometry to one C(19), one C(34), and one C(42) atom. In the forty-eighth C site, C(48) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(19), and one O(8) atom. The C(48)-O(19) bond length is 1.24 Å. The C(48)-O(8) bond length is 1.28 Å. There are sixteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(8) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(12) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(17) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(24) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(31) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(33) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(34) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(35) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(36) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(40) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(42) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(43) atom. In the sixteenth H site, H(16) is bonded in a single-bond geometry to one C(44) 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 Zn(4) and one C(20) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Zn(3) and one C(10) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(37) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Zn(1) and one C(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Zn(2) and one C(16) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(23) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(37) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(48) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Zn(4) and one C(7) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one C(7) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one C(3) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one Zn(2) and one C(23) atom. In the thirteenth O site, O(13) is bonded in a single-bond geometry to one C(10) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Zn(3) and one C(38) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 120 degrees geometry to one Zn(3) and one C(5) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(26) atom. In the seventeenth O site, O(17) is bonded in a bent 120 degrees geometry to one Zn(3) and one C(5) atom. In the eighteenth O site, O(18) is bonded in a distorted single-bond geometry to one Zn(4) and one C(45) atom. In the nineteenth O site, O(19) is bonded in a single-bond geometry to one C(48) atom. In the twentieth O site, O(20) is bonded in a single-bond geometry to one C(26) atom. In the twenty-first O site, O(21) is bonded in a distorted L-shaped geometry to one Zn(4) and one C(45) atom. In the twenty-second O site, O(22) is bonded in a single-bond geometry to one C(20) atom. In the twenty-third O site, O(23) is bonded in a single-bond geometry to one C(16) atom. In the twenty-fourth O site, O(24) is bonded in a bent 120 degrees geometry to one Zn(3) and one C(38) atom. Linkers: 1 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[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[CH].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C].[C]/[C]=[C]\[C]([C])[C]([C])[C].[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]=O.[C]C=[C].[C]O[Zn].[C]O[Zn].[C][C].[C][C].[C][C].[C][C]=C([C])[C].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[H].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O].[O][C]=O.[O][C]=O.[Zn].[Zn].[Zn].[Zn].[Zn].[Zn].[Zn].[Zn].[Zn].[Zn].[Zn].[Zn].[Zn].[Zn].[Zn].[Zn]. Metal clusters: 2 O=[C]O[Zn]123O[C]O[Zn](O[C]=O)(O[C]O1)(O[C]O2)O[C]O3. The MOF has largest included sphere 6.88 A, density 0.98 g/cm3, surface area 3996.57 m2/g, accessible volume 0.58 cm3/g