Zn2C25H15(NO5)2CHC5NH4 crystallizes in the monoclinic P2_1/c space group. The structure consists of four 02329_fluka molecules and two 4,4'-bipyridine molecules inside a Zn2C25H15(NO5)2 framework. In the Zn2C25H15(NO5)2 framework, there are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a tetrahedral geometry to one N(2), one O(3), one O(5), and one O(7) atom. The Zn(1)-N(2) bond length is 2.04 Å. The Zn(1)-O(3) bond length is 2.01 Å. The Zn(1)-O(5) bond length is 1.98 Å. The Zn(1)-O(7) bond length is 1.97 Å. In the second Zn site, Zn(2) is bonded in a trigonal bipyramidal geometry to one N(1), one O(1), one O(10), one O(2), and one O(4) atom. The Zn(2)-N(1) bond length is 2.07 Å. The Zn(2)-O(1) bond length is 2.03 Å. The Zn(2)-O(10) bond length is 2.02 Å. The Zn(2)-O(2) bond length is 2.16 Å. The Zn(2)-O(4) bond length is 2.13 Å. There are twenty-five inequivalent C sites. In the first C site, C(11) is bonded in a distorted trigonal planar geometry to one C(10), one C(12), and one H(6) atom. The C(11)-C(10) bond length is 1.40 Å. The C(11)-C(12) bond length is 1.39 Å. The C(11)-H(6) bond length is 1.09 Å. In the second C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(13), and one O(6) atom. The C(12)-C(13) bond length is 1.40 Å. The C(12)-O(6) bond length is 1.38 Å. In the third C site, C(13) is bonded in a distorted trigonal planar geometry to one C(12), one C(14), and one H(7) atom. The C(13)-C(14) bond length is 1.40 Å. The C(13)-H(7) bond length is 1.09 Å. In the fourth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(15), and one H(8) atom. The C(14)-C(15) bond length is 1.40 Å. The C(14)-H(8) bond length is 1.09 Å. In the fifth C site, C(15) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(16) atom. The C(15)-C(10) bond length is 1.41 Å. The C(15)-C(16) bond length is 1.51 Å. In the sixth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(10), and one O(9) atom. The C(16)-O(10) bond length is 1.29 Å. The C(16)-O(9) bond length is 1.25 Å. In the seventh C site, C(17) is bonded in a distorted trigonal planar geometry to one C(18), one N(1), and one H(9) atom. The C(17)-C(18) bond length is 1.39 Å. The C(17)-N(1) bond length is 1.35 Å. The C(17)-H(9) bond length is 1.09 Å. In the eighth C site, C(18) is bonded in a distorted trigonal planar geometry to one C(17), one C(19), and one H(10) atom. The C(18)-C(19) bond length is 1.41 Å. The C(18)-H(10) bond length is 1.09 Å. In the ninth C site, C(19) is bonded in a trigonal planar geometry to one C(18), one C(20), and one C(22) atom. The C(19)-C(20) bond length is 1.40 Å. The C(19)-C(22) bond length is 1.48 Å. In the tenth C site, C(20) is bonded in a distorted single-bond geometry to one C(19), one C(21), and one H(11) atom. The C(20)-C(21) bond length is 1.39 Å. The C(20)-H(11) bond length is 1.09 Å. In the eleventh C site, C(21) is bonded in a distorted trigonal planar geometry to one C(20), one N(1), and one H(12) atom. The C(21)-N(1) bond length is 1.34 Å. The C(21)-H(12) bond length is 1.09 Å. In the twelfth C site, C(22) is bonded in a trigonal planar geometry to one C(19), one C(23), and one C(26) atom. The C(22)-C(23) bond length is 1.40 Å. The C(22)-C(26) bond length is 1.41 Å. In the thirteenth C site, C(23) is bonded in a distorted single-bond geometry to one C(22), one C(24), and one H(13) atom. The C(23)-C(24) bond length is 1.38 Å. The C(23)-H(13) bond length is 1.09 Å. In the fourteenth C site, C(24) is bonded in a distorted trigonal planar geometry to one C(23), one N(2), and one H(14) atom. The C(24)-N(2) bond length is 1.35 Å. The C(24)-H(14) bond length is 1.09 Å. In the fifteenth C site, C(25) is bonded in a distorted trigonal planar geometry to one C(26), one N(2), and one H(15) atom. The C(25)-C(26) bond length is 1.39 Å. The C(25)-N(2) bond length is 1.35 Å. The C(25)-H(15) bond length is 1.09 Å. In the sixteenth C site, C(26) is bonded in a distorted trigonal planar geometry to one C(22), one C(25), and one H(16) atom. The C(26)-H(16) bond length is 1.09 Å. In the seventeenth C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(3) atom. The C(1)-C(2) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(3) bond length is 1.28 Å. In the eighteenth C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(7) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-C(7) bond length is 1.41 Å. In the nineteenth C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(3) atom. The C(3)-H(3) bond length is 1.09 Å. In the twentieth C site, C(5) is bonded in a distorted single-bond geometry to one O(6) atom. The C(5)-O(6) bond length is 1.39 Å. In the twenty-first C site, C(6) is bonded in a distorted single-bond geometry to one C(7) and one H(5) atom. The C(6)-C(7) bond length is 1.40 Å. The C(6)-H(5) bond length is 1.09 Å. In the twenty-second C site, C(7) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(8) atom. The C(7)-C(8) bond length is 1.50 Å. In the twenty-third C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(7), one O(4), and one O(5) atom. The C(8)-O(4) bond length is 1.26 Å. The C(8)-O(5) bond length is 1.28 Å. In the twenty-fourth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(7), and one O(8) atom. The C(9)-C(10) bond length is 1.50 Å. The C(9)-O(7) bond length is 1.30 Å. The C(9)-O(8) bond length is 1.25 Å. In the twenty-fifth C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(15), and one C(9) atom. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Zn(2), one C(17), and one C(21) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Zn(1), one C(24), and one C(25) atom. There are fifteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(2) atom. The H(1)-O(2) bond length is 1.01 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. The H(2)-O(2) bond length is 0.99 Å. In the third H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(5) is bonded in a single-bond geometry to one C(6) atom. In the fifth H site, H(6) is bonded in a single-bond geometry to one C(11) atom. In the sixth H site, H(7) is bonded in a single-bond geometry to one C(13) atom. In the seventh H site, H(8) is bonded in a single-bond geometry to one C(14) atom. In the eighth H site, H(9) is bonded in a single-bond geometry to one C(17) atom. In the ninth H site, H(10) is bonded in a single-bond geometry to one C(18) atom. In the tenth H site, H(11) is bonded in a single-bond geometry to one C(20) atom. In the eleventh H site, H(12) is bonded in a single-bond geometry to one C(21) atom. In the twelfth H site, H(13) is bonded in a single-bond geometry to one C(23) atom. In the thirteenth H site, H(14) is bonded in a single-bond geometry to one C(24) atom. In the fourteenth H site, H(15) is bonded in a single-bond geometry to one C(25) atom. In the fifteenth H site, H(16) is bonded in a single-bond geometry to one C(26) atom. There are ten inequivalent O sites. In the first O site, O(9) is bonded in a single-bond geometry to one C(16) atom. In the second O site, O(10) is bonded in a water-like geometry to one Zn(2) and one C(16) atom. In the third O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(1) atom. In the fourth O site, O(7) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(9) atom. In the fifth O site, O(2) is bonded in a distorted water-like geometry to one Zn(2), one H(1), and one H(2) atom. In the sixth O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(1) atom. In the seventh O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Zn(2) and one C(8) atom. In the eighth O site, O(5) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(8) atom. In the ninth O site, O(6) is bonded in a bent 120 degrees geometry to one C(12) and one C(5) atom. In the tenth O site, O(8) is bonded in a distorted single-bond geometry to one C(9) atom. Linkers: 1 [O][C]c1cc(Oc2ccc(C([O])=O)c(C([O])=O)c2)ccc1C([O])=O ,3 [O]C(=O)c1ccc(Oc2ccc(C([O])=O)c(C([O])=O)c2)cc1C([O])=O ,4 c1cc(-c2ccncc2)ccn1. Metal clusters: 2 O.O.O=[C]O[Zn]1O[C]O[Zn](O[C]=O)O[C]O[Zn](O[C]=O)O[C]O[Zn](O[C]=O)O[C]O1. RCSR code: kgd. The MOF has largest included sphere 2.17 A, density 1.80 g/cm3, surface area 4104.13 m2/g, accessible volume 0.12 cm3/g