ZnC13H9O4 crystallizes in the tetragonal P4_2/nnm space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(3) atoms. Both Zn(1)-O(1) bond lengths are 2.02 Å. Both Zn(1)-O(3) bond lengths are 2.04 Å. In the second Zn site, Zn(2) is bonded in a rectangular see-saw-like geometry to two equivalent O(2) and two equivalent O(4) atoms. Both Zn(2)-O(2) bond lengths are 1.98 Å. Both Zn(2)-O(4) bond lengths are 2.13 Å. There are thirteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(3), one C(6), and one H(1) atom. The C(1)-C(3) bond length is 1.38 Å. The C(1)-C(6) bond length is 1.37 Å. The C(1)-H(1) bond length is 0.93 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(11), one C(2), and one C(4) atom. The C(2)-C(11) bond length is 1.54 Å. The C(2)-C(2) bond length is 1.33 Å. The C(2)-C(4) bond length is 1.38 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(4), and one C(5) atom. The C(3)-C(4) bond length is 1.52 Å. The C(3)-C(5) bond length is 1.38 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(2), one C(3), and one C(7) atom. The C(4)-C(7) bond length is 1.42 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(3), one C(8), and one H(2) atom. The C(5)-C(8) bond length is 1.44 Å. The C(5)-H(2) bond length is 0.93 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one C(1), one C(10), and one C(9) atom. The C(6)-C(10) bond length is 1.49 Å. The C(6)-C(9) bond length is 1.45 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one C(12), one C(4), and one C(7) atom. The C(7)-C(12) bond length is 1.50 Å. The C(7)-C(7) bond length is 1.37 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(13), one C(5), and one C(9) atom. The C(8)-C(13) bond length is 1.51 Å. The C(8)-C(9) bond length is 1.36 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(6), one C(8), and one H(3) atom. The C(9)-H(3) bond length is 0.93 Å. In the tenth C site, C(10) is bonded in a bent 120 degrees geometry to one C(6), one O(2), and one O(4) atom. The C(10)-O(2) bond length is 1.27 Å. The C(10)-O(4) bond length is 1.23 Å. In the eleventh C site, C(11) is bonded in a trigonal non-coplanar geometry to one C(2), one H(4), one H(5), and one H(6) atom. The C(11)-H(4) bond length is 0.96 Å. The C(11)-H(5) bond length is 0.96 Å. The C(11)-H(6) bond length is 0.96 Å. In the twelfth C site, C(12) is bonded in a trigonal non-coplanar geometry to one C(7); one H(8); and two equivalent H(7,9) atoms. The C(12)-H(8) bond length is 0.96 Å. Both C(12)-H(7,9) bond lengths are 0.96 Å. In the thirteenth C site, C(13) is bonded in a bent 120 degrees geometry to one C(8), one O(1), and one O(3) atom. The C(13)-O(1) bond length is 1.26 Å. The C(13)-O(3) bond length is 1.23 Å. There are eight 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(5) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(9) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(11) 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(11) atom. In the seventh H site, H(7,9) is bonded in a single-bond geometry to one C(12) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(12) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Zn(1) and one C(13) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Zn(2) and one C(10) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Zn(1) and one C(13) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Zn(2) and one C(10) atom. Linkers: 8 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: 8 [C]1O[Zn]23O[C]O[Zn](O1)(O[C]O2)O[C]O3. RCSR code: hyw. The MOF has largest included sphere 13.46 A, density 0.78 g/cm3, surface area 4192.86 m2/g, accessible volume 0.89 cm3/g