ZnC9N5H5O4C3H2 crystallizes in the monoclinic P2_1/c space group. The structure consists of four 2,3-dimethyl-1,3-butadiene molecules inside a ZnC9N5H5O4 framework. In the ZnC9N5H5O4 framework, there are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a tetrahedral geometry to one N(1), one N(4), one O(1), and one O(8) atom. The Zn(1)-N(1) bond length is 2.01 Å. The Zn(1)-N(4) bond length is 2.02 Å. The Zn(1)-O(1) bond length is 1.95 Å. The Zn(1)-O(8) bond length is 1.94 Å. In the second Zn site, Zn(2) is bonded in a tetrahedral geometry to one N(5), one N(8), one O(4), and one O(6) atom. The Zn(2)-N(5) bond length is 2.02 Å. The Zn(2)-N(8) bond length is 2.05 Å. The Zn(2)-O(4) bond length is 1.92 Å. The Zn(2)-O(6) bond length is 1.95 Å. There are eighteen inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one N(4) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-N(1) bond length is 1.33 Å. The C(1)-N(4) bond length is 1.34 Å. In the second C site, C(2) is bonded in a 3-coordinate geometry to one C(1), one N(9), one H(1), and one H(2) atom. The C(2)-N(9) bond length is 1.49 Å. The C(2)-H(1) bond length is 0.97 Å. The C(2)-H(2) bond length is 0.97 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one N(9) and one H(3) atom. The C(3)-N(9) bond length is 1.34 Å. The C(3)-H(3) bond length is 0.93 Å. In the fourth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one N(9) and one H(6) atom. The C(7)-N(9) bond length is 1.35 Å. The C(7)-H(6) bond length is 0.93 Å. In the fifth C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(15), and one C(16) atom. The C(10)-C(11) bond length is 1.39 Å. The C(10)-C(15) bond length is 1.39 Å. The C(10)-C(16) bond length is 1.50 Å. In the sixth C site, C(11) is bonded in a distorted single-bond geometry to one C(10), one C(12), and one H(8) atom. The C(11)-C(12) bond length is 1.40 Å. The C(11)-H(8) bond length is 0.93 Å. In the seventh C site, C(12) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(17) atom. The C(12)-C(13) bond length is 1.40 Å. The C(12)-C(17) bond length is 1.51 Å. In the eighth C site, C(13) is bonded in a trigonal planar geometry to one C(12), one C(14), and one C(18) atom. The C(13)-C(14) bond length is 1.40 Å. The C(13)-C(18) bond length is 1.50 Å. In the ninth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(15), and one H(9) atom. The C(14)-C(15) bond length is 1.39 Å. The C(14)-H(9) bond length is 0.93 Å. In the tenth C site, C(15) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(24) atom. The C(15)-C(24) bond length is 1.52 Å. In the eleventh C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(10), one O(7), and one O(8) atom. The C(16)-O(7) bond length is 1.22 Å. The C(16)-O(8) bond length is 1.27 Å. In the twelfth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(12), one O(5), and one O(6) atom. The C(17)-O(5) bond length is 1.23 Å. The C(17)-O(6) bond length is 1.28 Å. In the thirteenth C site, C(18) is bonded in a bent 120 degrees geometry to one C(13), one O(3), and one O(4) atom. The C(18)-O(3) bond length is 1.23 Å. The C(18)-O(4) bond length is 1.28 Å. In the fourteenth C site, C(19) is bonded in a distorted bent 120 degrees geometry to one N(10) and one H(10) atom. The C(19)-N(10) bond length is 1.35 Å. The C(19)-H(10) bond length is 0.93 Å. In the fifteenth C site, C(20) is bonded in a distorted bent 120 degrees geometry to one N(10) and one H(11) atom. The C(20)-N(10) bond length is 1.34 Å. The C(20)-H(11) bond length is 0.93 Å. In the sixteenth C site, C(22) is bonded in a 3-coordinate geometry to one C(23); one N(10); and two equivalent H(13,14) atoms. The C(22)-C(23) bond length is 1.50 Å. The C(22)-N(10) bond length is 1.49 Å. Both C(22)-H(13,14) bond lengths are 0.97 Å. In the seventeenth C site, C(23) is bonded in a distorted trigonal planar geometry to one C(22), one N(5), and one N(8) atom. The C(23)-N(5) bond length is 1.33 Å. The C(23)-N(8) bond length is 1.33 Å. In the eighteenth C site, C(24) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(1), and one O(2) atom. The C(24)-O(1) bond length is 1.26 Å. The C(24)-O(2) bond length is 1.23 Å. There are ten inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one Zn(1), one C(1), and one N(2) atom. The N(1)-N(2) bond length is 1.35 Å. In the second N site, N(2) is bonded in a water-like geometry to one N(1) and one N(3) atom. The N(2)-N(3) bond length is 1.30 Å. In the third N site, N(3) is bonded in a water-like geometry to one N(2) and one N(4) atom. The N(3)-N(4) bond length is 1.36 Å. In the fourth N site, N(4) is bonded in a 3-coordinate geometry to one Zn(1), one C(1), and one N(3) atom. In the fifth N site, N(5) is bonded in a 3-coordinate geometry to one Zn(2), one C(23), and one N(6) atom. The N(5)-N(6) bond length is 1.35 Å. In the sixth N site, N(6) is bonded in a water-like geometry to one N(5) and one N(7) atom. The N(6)-N(7) bond length is 1.30 Å. In the seventh N site, N(7) is bonded in a water-like geometry to one N(6) and one N(8) atom. The N(7)-N(8) bond length is 1.36 Å. In the eighth N site, N(8) is bonded in a 3-coordinate geometry to one Zn(2), one C(23), and one N(7) atom. In the ninth N site, N(9) is bonded in a trigonal planar geometry to one C(2), one C(3), and one C(7) atom. In the tenth N site, N(10) is bonded in a trigonal planar geometry to one C(19), one C(20), and one C(22) atom. There are nine 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(2) atom. 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(6) is bonded in a single-bond geometry to one C(7) atom. In the fifth H site, H(8) is bonded in a single-bond geometry to one C(11) atom. In the sixth H site, H(9) is bonded in a single-bond geometry to one C(14) atom. In the seventh H site, H(10) is bonded in a single-bond geometry to one C(19) atom. In the eighth H site, H(11) is bonded in a single-bond geometry to one C(20) atom. In the ninth H site, H(13,14) is bonded in a single-bond geometry to one C(22) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a single-bond geometry to one C(17) atom. In the second O site, O(6) is bonded in a water-like geometry to one Zn(2) and one C(17) atom. In the third O site, O(7) is bonded in a single-bond geometry to one C(16) atom. In the fourth O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(24) atom. In the fifth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(2) and one C(18) atom. In the sixth O site, O(8) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(16) atom. In the seventh O site, O(2) is bonded in a single-bond geometry to one C(24) atom. In the eighth O site, O(3) is bonded in a single-bond geometry to one C(18) atom. Linkers: 4 [CH]1C=C(C2=C[CH]N(CC3=NN=N[N]3)C=C2)C=CN1CC1=NN=N[N]1 ,4 [O]C(=O)c1cc(C([O])=O)c(C([O])=O)cc1C([O])=O. Metal clusters: 8 O=[C]O[Zn]O[C]=O. The MOF has largest included sphere 4.54 A, density 1.41 g/cm3, surface area 3968.95 m2/g, accessible volume 0.36 cm3/g