Zn3H7(C2O)12 crystallizes in the monoclinic C2/c space group. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a trigonal planar geometry to one O(1), one O(11), and one O(3) atom. The Zn(1)-O(1) bond length is 1.97 Å. The Zn(1)-O(11) bond length is 1.97 Å. The Zn(1)-O(3) bond length is 1.97 Å. In the second Zn site, Zn(2) is bonded in a distorted T-shaped geometry to one O(12), one O(2), and one O(6) atom. The Zn(2)-O(12) bond length is 1.95 Å. The Zn(2)-O(2) bond length is 2.26 Å. The Zn(2)-O(6) bond length is 1.96 Å. In the third Zn site, Zn(3) is bonded in a distorted tetrahedral geometry to two equivalent O(4) and two equivalent O(5) atoms. Both Zn(3)-O(4) bond lengths are 1.96 Å. Both Zn(3)-O(5) bond lengths are 1.98 Å. In the fourth Zn site, Zn(4) is bonded in an octahedral geometry to two equivalent O(12), two equivalent O(2), and two equivalent O(7) atoms. Both Zn(4)-O(12) bond lengths are 2.14 Å. Both Zn(4)-O(2) bond lengths are 2.16 Å. Both Zn(4)-O(7) bond lengths are 2.03 Å. There are twenty-four inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(17) and one C(23) atom. The C(1)-C(17) bond length is 1.37 Å. The C(1)-C(23) bond length is 1.41 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(23), one O(3), and one O(5) atom. The C(2)-C(23) bond length is 1.49 Å. The C(2)-O(3) bond length is 1.26 Å. The C(2)-O(5) bond length is 1.26 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(11), one C(18), and one C(9) atom. The C(3)-C(11) bond length is 1.41 Å. The C(3)-C(18) bond length is 1.39 Å. The C(3)-C(9) bond length is 1.49 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(16) and one H(1) atom. The C(4)-C(16) bond length is 1.39 Å. The C(4)-H(1) bond length is 0.93 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(17), one C(19), and one C(6) atom. The C(5)-C(17) bond length is 1.40 Å. The C(5)-C(19) bond length is 1.39 Å. The C(5)-C(6) bond length is 1.50 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(6), and one O(7) atom. The C(6)-O(6) bond length is 1.26 Å. The C(6)-O(7) bond length is 1.26 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(24), one O(12), and one O(8) atom. The C(7)-C(24) bond length is 1.50 Å. The C(7)-O(12) bond length is 1.30 Å. The C(7)-O(8) bond length is 1.23 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(1), and one O(10) atom. The C(8)-C(15) bond length is 1.49 Å. The C(8)-O(1) bond length is 1.29 Å. The C(8)-O(10) bond length is 1.24 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(11), and one O(2) atom. The C(9)-O(11) bond length is 1.25 Å. The C(9)-O(2) bond length is 1.26 Å. In the tenth C site, C(10) is bonded in a distorted single-bond geometry to one C(24) and one H(2) atom. The C(10)-C(24) bond length is 1.39 Å. The C(10)-H(2) bond length is 0.93 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one C(13), one C(20), and one C(3) atom. The C(11)-C(13) bond length is 1.51 Å. The C(11)-C(20) bond length is 1.39 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(15) and one H(3) atom. The C(12)-C(15) bond length is 1.38 Å. The C(12)-H(3) bond length is 0.93 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one C(11), one C(22), and one C(24) atom. The C(13)-C(22) bond length is 1.40 Å. The C(13)-C(24) bond length is 1.40 Å. In the fourteenth C site, C(14) is bonded in a trigonal planar geometry to one C(14), one C(19), and one C(23) atom. The C(14)-C(14) bond length is 1.52 Å. The C(14)-C(19) bond length is 1.38 Å. The C(14)-C(23) bond length is 1.40 Å. In the fifteenth C site, C(15) is bonded in a trigonal planar geometry to one C(12), one C(22), and one C(8) atom. The C(15)-C(22) bond length is 1.40 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one C(20), one C(21), and one C(4) atom. The C(16)-C(20) bond length is 1.40 Å. The C(16)-C(21) bond length is 1.50 Å. In the seventeenth C site, C(17) is bonded in a single-bond geometry to one C(1), one C(5), and one H(4) atom. The C(17)-H(4) bond length is 0.93 Å. In the eighteenth C site, C(18) is bonded in a single-bond geometry to one C(3) and one H(5) atom. The C(18)-H(5) bond length is 0.93 Å. In the nineteenth C site, C(19) is bonded in a distorted single-bond geometry to one C(14), one C(5), and one H(6) atom. The C(19)-H(6) bond length is 0.93 Å. In the twentieth C site, C(20) is bonded in a distorted single-bond geometry to one C(11), one C(16), and one H(7) atom. The C(20)-H(7) bond length is 0.93 Å. In the twenty-first C site, C(21) is bonded in a distorted bent 120 degrees geometry to one C(16), one O(4), and one O(9) atom. The C(21)-O(4) bond length is 1.28 Å. The C(21)-O(9) bond length is 1.24 Å. In the twenty-second C site, C(22) is bonded in a bent 120 degrees geometry to one C(13) and one C(15) atom. In the twenty-third C site, C(23) is bonded in a trigonal planar geometry to one C(1), one C(14), and one C(2) atom. In the twenty-fourth C site, C(24) is bonded in a trigonal planar geometry to one C(10), one C(13), and one C(7) atom. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(4) 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(12) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(17) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(18) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(19) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(20) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(8) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Zn(2), one Zn(4), and one C(9) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(2) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Zn(3) and one C(21) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Zn(3) and one C(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(6) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Zn(4) and one C(6) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one C(7) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one C(21) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one C(8) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Zn(1) and one C(9) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to one Zn(2), one Zn(4), and one C(7) atom. Linkers: 2 [O]C(=O)c1c[c]c(C([O])=O)c(-c2cc(C([O])=O)c[c]c2C([O])=O)c1 ,4 [O]C(=O)c1[c]c(-c2cc(C([O])=O)ccc2C([O])=O)c(C([O])=O)cc1. Metal clusters: 12 [Zn]. The MOF has largest included sphere 4.86 A, density 1.48 g/cm3, surface area 3518.19 m2/g, accessible volume 0.36 cm3/g