Zn2C20N5H13O7 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(7) atom to form distorted corner-sharing ZnO5 square pyramids. The Zn(1)-O(1) bond length is 2.08 Å. The Zn(1)-O(2) bond length is 2.06 Å. The Zn(1)-O(3) bond length is 2.08 Å. The Zn(1)-O(4) bond length is 2.08 Å. The Zn(1)-O(7) bond length is 1.97 Å. In the second Zn site, Zn(2) is bonded to one N(1), one N(5), one O(6), and one O(7) atom to form corner-sharing ZnN2O2 tetrahedra. The Zn(2)-N(1) bond length is 2.01 Å. The Zn(2)-N(5) bond length is 2.04 Å. The Zn(2)-O(6) bond length is 1.97 Å. The Zn(2)-O(7) bond length is 1.95 Å. There are twenty inequivalent C sites. In the first C site, C(18) is bonded in a distorted bent 120 degrees geometry to one C(19), one N(4), and one H(10) atom. The C(18)-C(19) bond length is 1.37 Å. The C(18)-N(4) bond length is 1.39 Å. The C(18)-H(10) bond length is 1.08 Å. In the second C site, C(19) is bonded in a distorted trigonal planar geometry to one C(18), one N(5), and one H(11) atom. The C(19)-N(5) bond length is 1.39 Å. The C(19)-H(11) bond length is 1.08 Å. In the third C site, C(20) is bonded in a trigonal planar geometry to one N(4), one N(5), and one H(12) atom. The C(20)-N(4) bond length is 1.37 Å. The C(20)-N(5) bond length is 1.33 Å. The C(20)-H(12) bond length is 1.09 Å. In the fourth C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(7) atom. The C(1)-C(2) bond length is 1.40 Å. The C(1)-C(6) bond length is 1.40 Å. The C(1)-C(7) bond length is 1.50 Å. In the fifth C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(1) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-H(1) bond length is 1.09 Å. In the sixth C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(8) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(8) bond length is 1.50 Å. In the seventh C site, C(4) is bonded in a distorted trigonal planar geometry to one C(3), one C(5), and one H(2) atom. The C(4)-C(5) bond length is 1.40 Å. The C(4)-H(2) bond length is 1.09 Å. In the eighth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(9) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-C(9) bond length is 1.50 Å. In the ninth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(1), one C(5), and one H(3) atom. The C(6)-H(3) bond length is 1.09 Å. In the tenth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.27 Å. The C(7)-O(2) bond length is 1.27 Å. In the eleventh C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(3), one O(3), and one O(4) atom. The C(8)-O(3) bond length is 1.28 Å. The C(8)-O(4) bond length is 1.27 Å. In the twelfth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(5), and one O(6) atom. The C(9)-O(5) bond length is 1.25 Å. The C(9)-O(6) bond length is 1.30 Å. In the thirteenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(11), one N(1), and one H(4) atom. The C(10)-C(11) bond length is 1.37 Å. The C(10)-N(1) bond length is 1.39 Å. The C(10)-H(4) bond length is 1.08 Å. In the fourteenth C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(10), one N(2), and one H(5) atom. The C(11)-N(2) bond length is 1.39 Å. The C(11)-H(5) bond length is 1.08 Å. In the fifteenth C site, C(12) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(6) atom. The C(12)-N(1) bond length is 1.33 Å. The C(12)-N(2) bond length is 1.37 Å. The C(12)-H(6) bond length is 1.08 Å. In the sixteenth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(14), one N(2), and one N(3) atom. The C(13)-C(14) bond length is 1.40 Å. The C(13)-N(2) bond length is 1.42 Å. The C(13)-N(3) bond length is 1.33 Å. In the seventeenth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(15), and one H(7) atom. The C(14)-C(15) bond length is 1.39 Å. The C(14)-H(7) bond length is 1.09 Å. In the eighteenth C site, C(15) is bonded in a distorted trigonal planar geometry to one C(14), one C(16), and one H(8) atom. The C(15)-C(16) bond length is 1.39 Å. The C(15)-H(8) bond length is 1.09 Å. In the nineteenth C site, C(16) is bonded in a distorted single-bond geometry to one C(15), one C(17), and one H(9) atom. The C(16)-C(17) bond length is 1.40 Å. The C(16)-H(9) bond length is 1.09 Å. In the twentieth C site, C(17) is bonded in a distorted trigonal planar geometry to one C(16), one N(3), and one N(4) atom. The C(17)-N(3) bond length is 1.34 Å. The C(17)-N(4) bond length is 1.42 Å. There are five inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Zn(2), one C(10), and one C(12) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(13) atom. In the third N site, N(3) is bonded in a bent 120 degrees geometry to one C(13) and one C(17) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one C(17), one C(18), and one C(20) atom. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one Zn(2), one C(19), and one C(20) atom. There are thirteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) 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(10) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(11) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(12) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(14) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(15) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(16) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(18) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(19) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(20) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one O(7) atom. The H(13)-O(7) bond length is 0.97 Å. There are seven 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(7) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one C(7) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(8) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one C(8) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one C(9) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one Zn(2) and one C(9) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Zn(1), one Zn(2), and one H(13) atom. Linkers: 4 [O]C(=O)c1cc(C([O])=O)cc(C([O])=O)c1 ,4 c1cc(-n2ccnc2)nc(-n2ccnc2)c1. Metal clusters: 2 O=[C]O[Zn]O.O=[C]O[Zn]O.[C]1O[Zn]23O[C]O[Zn](O1)(O[C]O2)O[C]O3. RCSR code: rtl. The MOF has largest included sphere 3.61 A, density 1.71 g/cm3, surface area 4030.67 m2/g, accessible volume 0.16 cm3/g