ZnC13H9O4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a distorted tetrahedral geometry to one O(2), one O(5), one O(7), and one O(8) atom. The Zn(1)-O(2) bond length is 1.97 Å. The Zn(1)-O(5) bond length is 1.98 Å. The Zn(1)-O(7) bond length is 2.03 Å. The Zn(1)-O(8) bond length is 1.99 Å. In the second Zn site, Zn(2) is bonded in a 3-coordinate geometry to one O(3), one O(6), and one O(7) atom. The Zn(2)-O(3) bond length is 2.08 Å. The Zn(2)-O(6) bond length is 2.06 Å. The Zn(2)-O(7) bond length is 2.14 Å. There are twenty-six inequivalent C sites. In the first C site, C(1) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.24 Å. The C(1)-O(2) bond length is 1.27 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(17), and one C(3) atom. The C(2)-C(17) bond length is 1.40 Å. The C(2)-C(3) bond length is 1.37 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(19), one C(2), and one H(1) atom. The C(3)-C(19) bond length is 1.39 Å. The C(3)-H(1) bond length is 0.93 Å. In the fourth C site, C(4) is bonded in a distorted bent 120 degrees geometry to one C(5), one O(3), and one O(8) atom. The C(4)-C(5) bond length is 1.50 Å. The C(4)-O(3) bond length is 1.25 Å. The C(4)-O(8) bond length is 1.25 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(7) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-C(7) bond length is 1.39 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(13), one C(5), and one H(2) atom. The C(6)-C(13) bond length is 1.38 Å. The C(6)-H(2) bond length is 0.93 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(5), one C(8), and one H(3) atom. The C(7)-C(8) bond length is 1.38 Å. The C(7)-H(3) bond length is 0.93 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(14), one C(7), and one C(9) atom. The C(8)-C(14) bond length is 1.42 Å. The C(8)-C(9) bond length is 1.48 Å. In the ninth C site, C(9) is bonded in a trigonal planar geometry to one C(10), one C(11), and one C(8) atom. The C(9)-C(10) bond length is 1.41 Å. The C(9)-C(11) bond length is 1.40 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(22), one C(25), and one C(9) atom. The C(10)-C(22) bond length is 1.40 Å. The C(10)-C(25) bond length is 1.52 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one C(21), one C(26), and one C(9) atom. The C(11)-C(21) bond length is 1.40 Å. The C(11)-C(26) bond length is 1.53 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(5), and one O(6) atom. The C(12)-C(13) bond length is 1.50 Å. The C(12)-O(5) bond length is 1.26 Å. The C(12)-O(6) bond length is 1.26 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one C(12), one C(14), and one C(6) atom. The C(13)-C(14) bond length is 1.40 Å. In the fourteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(8), and one H(4) atom. The C(14)-H(4) bond length is 0.93 Å. In the fifteenth C site, C(15) is bonded in a bent 120 degrees geometry to one C(16), one O(4), and one O(7) atom. The C(15)-C(16) bond length is 1.49 Å. The C(15)-O(4) bond length is 1.22 Å. The C(15)-O(7) bond length is 1.32 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one C(15), one C(17), and one C(18) atom. The C(16)-C(17) bond length is 1.38 Å. The C(16)-C(18) bond length is 1.39 Å. In the seventeenth C site, C(17) is bonded in a distorted trigonal planar geometry to one C(16), one C(2), and one H(5) atom. The C(17)-H(5) bond length is 0.93 Å. In the eighteenth C site, C(18) is bonded in a distorted single-bond geometry to one C(16), one C(19), and one H(6) atom. The C(18)-C(19) bond length is 1.39 Å. The C(18)-H(6) bond length is 0.93 Å. In the nineteenth C site, C(19) is bonded in a trigonal planar geometry to one C(18), one C(20), and one C(3) atom. The C(19)-C(20) bond length is 1.51 Å. In the twentieth C site, C(20) is bonded in a trigonal planar geometry to one C(19), one C(21), and one C(22) atom. The C(20)-C(21) bond length is 1.40 Å. The C(20)-C(22) bond length is 1.41 Å. In the twenty-first C site, C(21) is bonded in a trigonal planar geometry to one C(11), one C(20), and one C(24) atom. The C(21)-C(24) bond length is 1.52 Å. In the twenty-second C site, C(22) is bonded in a trigonal planar geometry to one C(10), one C(20), and one C(23) atom. The C(22)-C(23) bond length is 1.51 Å. In the twenty-third C site, C(23) is bonded in a trigonal non-coplanar geometry to one C(22) and three equivalent H(7,8,9) atoms. All C(23)-H(7,8,9) bond lengths are 0.96 Å. In the twenty-fourth C site, C(24) is bonded in a trigonal non-coplanar geometry to one C(21) and three equivalent H(10,11,12) atoms. All C(24)-H(10,11,12) bond lengths are 0.96 Å. In the twenty-fifth C site, C(25) is bonded in a trigonal non-coplanar geometry to one C(10) and three equivalent H(13,14,15) atoms. All C(25)-H(13,14,15) bond lengths are 0.96 Å. In the twenty-sixth C site, C(26) is bonded in a trigonal non-coplanar geometry to one C(11) and three equivalent H(16,17,18) atoms. All C(26)-H(16,17,18) bond lengths are 0.96 Å. There are ten inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(6) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(7) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(14) 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(7,8,9) is bonded in a single-bond geometry to one C(23) atom. In the eighth H site, H(10,11,12) is bonded in a single-bond geometry to one C(24) atom. In the ninth H site, H(13,14,15) is bonded in a single-bond geometry to one C(25) atom. In the tenth H site, H(16,17,18) is bonded in a single-bond geometry to one C(26) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one C(1) atom. In the second O site, O(2) is bonded in a water-like geometry to one Zn(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Zn(2) and one C(4) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one C(15) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(12) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Zn(2) and one C(12) 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 C(15) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(4) atom. Linkers: 4 Cc1c(C)c(-c2cc(C([O])=O)cc(C([O])=O)c2)c(C)c(C)c1-c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 4 O=[C]O[Zn]1(O[C]=O)O[C]O[Zn]O[C]O1. RCSR code: pts. The MOF has largest included sphere 6.56 A, density 0.79 g/cm3, surface area 4194.33 m2/g, accessible volume 0.90 cm3/g