Zn2C27N6H16O7 crystallizes in the triclinic P-1 space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one N(3), one O(1), one O(4), and two equivalent O(7) atoms to form ZnNO4 trigonal bipyramids that share corners with two equivalent Zn(2)NO3 tetrahedra and  an edgeedge with one Zn(1)NO4 trigonal bipyramid. The Zn(1)-N(3) bond length is 2.13 Å. The Zn(1)-O(1) bond length is 2.04 Å. The Zn(1)-O(4) bond length is 2.01 Å. There is one shorter (2.02 Å) and one longer (2.17 Å) Zn(1)-O(7) bond length. In the second Zn site, Zn(2) is bonded to one N(1), one O(2), one O(3), and one O(7) atom to form corner-sharing ZnNO3 tetrahedra. The Zn(2)-N(1) bond length is 2.03 Å. The Zn(2)-O(2) bond length is 1.95 Å. The Zn(2)-O(3) bond length is 1.99 Å. The Zn(2)-O(7) bond length is 1.98 Å. There are twenty-seven inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(13), one C(14), and one N(6) atom. The C(1)-C(13) bond length is 1.40 Å. The C(1)-C(14) bond length is 1.44 Å. The C(1)-N(6) bond length is 1.38 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(3), one N(5), and one N(6) atom. The C(2)-C(3) bond length is 1.45 Å. The C(2)-N(5) bond length is 1.38 Å. The C(2)-N(6) bond length is 1.33 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(12), one C(2), and one C(27) atom. The C(3)-C(12) bond length is 1.40 Å. The C(3)-C(27) bond length is 1.41 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(15), one C(16), and one C(5) atom. The C(4)-C(15) bond length is 1.41 Å. The C(4)-C(16) bond length is 1.40 Å. The C(4)-C(5) bond length is 1.45 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one N(2), and one N(4) atom. The C(5)-N(2) bond length is 1.33 Å. The C(5)-N(4) 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(9), and one N(2) atom. The C(6)-C(13) bond length is 1.40 Å. The C(6)-C(9) bond length is 1.44 Å. The C(6)-N(2) bond length is 1.39 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(18), one O(1), and one O(3) atom. The C(7)-C(18) bond length is 1.49 Å. The C(7)-O(1) bond length is 1.27 Å. The C(7)-O(3) bond length is 1.29 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one C(11), one C(25), and one C(26) atom. The C(8)-C(11) bond length is 1.39 Å. The C(8)-C(25) bond length is 1.40 Å. The C(8)-C(26) bond length is 1.51 Å. In the ninth C site, C(9) is bonded in a distorted single-bond geometry to one C(22), one C(6), and one N(4) atom. The C(9)-C(22) bond length is 1.39 Å. The C(9)-N(4) bond length is 1.37 Å. In the tenth C site, C(10) is bonded in a distorted bent 120 degrees geometry to one C(23), one O(4), and one O(5) atom. The C(10)-C(23) bond length is 1.51 Å. The C(10)-O(4) bond length is 1.29 Å. The C(10)-O(5) bond length is 1.26 Å. In the eleventh C site, C(11) is bonded in a distorted single-bond geometry to one C(18), one C(8), and one H(4) atom. The C(11)-C(18) bond length is 1.40 Å. The C(11)-H(4) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a distorted single-bond geometry to one C(19), one C(3), and one H(5) atom. The C(12)-C(19) bond length is 1.39 Å. The C(12)-H(5) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(1), one C(6), and one H(6) atom. The C(13)-H(6) bond length is 1.09 Å. In the fourteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(1), one C(22), and one N(5) atom. The C(14)-C(22) bond length is 1.39 Å. The C(14)-N(5) bond length is 1.37 Å. In the fifteenth C site, C(15) is bonded in a distorted single-bond geometry to one C(4) and one H(7) atom. The C(15)-H(7) bond length is 1.09 Å. In the sixteenth C site, C(16) is bonded in a distorted single-bond geometry to one C(21), one C(4), and one H(8) atom. The C(16)-C(21) bond length is 1.38 Å. The C(16)-H(8) bond length is 1.09 Å. In the seventeenth C site, C(17) is bonded in a distorted trigonal planar geometry to one N(3) and one H(9) atom. The C(17)-N(3) bond length is 1.35 Å. The C(17)-H(9) bond length is 1.09 Å. In the eighteenth C site, C(18) is bonded in a trigonal planar geometry to one C(11), one C(20), and one C(7) atom. The C(18)-C(20) bond length is 1.40 Å. In the nineteenth C site, C(19) is bonded in a distorted trigonal planar geometry to one C(12), one N(1), and one H(10) atom. The C(19)-N(1) bond length is 1.35 Å. The C(19)-H(10) bond length is 1.09 Å. In the twentieth C site, C(20) is bonded in a distorted single-bond geometry to one C(18), one C(23), and one H(11) atom. The C(20)-C(23) bond length is 1.40 Å. The C(20)-H(11) bond length is 1.09 Å. In the twenty-first C site, C(21) is bonded in a distorted trigonal planar geometry to one C(16), one N(3), and one H(12) atom. The C(21)-N(3) bond length is 1.35 Å. The C(21)-H(12) bond length is 1.09 Å. In the twenty-second C site, C(22) is bonded in a distorted single-bond geometry to one C(14), one C(9), and one H(13) atom. The C(22)-H(13) bond length is 1.09 Å. In the twenty-third C site, C(23) is bonded in a trigonal planar geometry to one C(10), one C(20), and one C(25) atom. The C(23)-C(25) bond length is 1.40 Å. In the twenty-fourth C site, C(24) is bonded in a distorted trigonal planar geometry to one C(27), one N(1), and one H(14) atom. The C(24)-C(27) bond length is 1.39 Å. The C(24)-N(1) bond length is 1.35 Å. The C(24)-H(14) bond length is 1.09 Å. In the twenty-fifth C site, C(25) is bonded in a distorted single-bond geometry to one C(23), one C(8), and one H(15) atom. The C(25)-H(15) bond length is 1.09 Å. In the twenty-sixth C site, C(26) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(2), and one O(6) atom. The C(26)-O(2) bond length is 1.30 Å. The C(26)-O(6) bond length is 1.25 Å. In the twenty-seventh C site, C(27) is bonded in a distorted trigonal planar geometry to one C(24), one C(3), and one H(16) atom. The C(27)-H(16) bond length is 1.09 Å. There are six inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Zn(2), one C(19), and one C(24) atom. In the second N site, N(2) is bonded in a water-like geometry to one C(5) and one C(6) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Zn(1), one C(17), and one C(21) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one C(5), one C(9), and one H(2) atom. The N(4)-H(2) bond length is 1.01 Å. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one C(14), one C(2), and one H(3) atom. The N(5)-H(3) bond length is 1.01 Å. In the sixth N site, N(6) is bonded in a water-like geometry to one C(1) and one C(2) atom. There are sixteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(5) and one O(7) atom. The H(1)-O(5) bond length is 1.69 Å. The H(1)-O(7) bond length is 1.01 Å. In the second H site, H(2) is bonded in a single-bond geometry to one N(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one N(5) 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(12) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(13) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(15) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(16) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(17) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(19) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(20) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(21) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(22) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(24) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(25) atom. In the sixteenth H site, H(16) is bonded in a single-bond geometry to one C(27) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Zn(1) and one C(7) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(26) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(7) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Zn(1) and one C(10) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to one C(10) and one H(1) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one C(26) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Zn(2), two equivalent Zn(1), and one H(1) atom. Linkers: 2 c1cc(-c2nc3cc4nc(-c5ccncc5)[nH]c4cc3[nH]2)ccn1 ,2 [O]C(=O)c1cc(C([O])=O)cc(C([O])=O)c1. Metal clusters: 1 O=[C]O[Zn]O[C]O[Zn](O)O[C]=O.O=[C]O[Zn]O[C]O[Zn](O)O[C]=O. RCSR code: kgd. The MOF has largest included sphere 3.75 A, density 1.62 g/cm3, surface area 3881.32 m2/g, accessible volume 0.18 cm3/g