Zn2C20H6O9C5H2O crystallizes in the trigonal R-3 space group. The structure consists of eighteen methoxymethylcyclopropane molecules inside a Zn2C20H6O9 framework. In the Zn2C20H6O9 framework, there are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a tetrahedral geometry to one O(1), one O(3), one O(7), and one O(8) atom. The Zn(1)-O(1) bond length is 1.94 Å. The Zn(1)-O(3) bond length is 1.94 Å. The Zn(1)-O(7) bond length is 1.96 Å. The Zn(1)-O(8) bond length is 1.96 Å. In the second Zn site, Zn(2) is bonded in a see-saw-like geometry to one O(2), one O(4), one O(6), and one O(9) atom. The Zn(2)-O(2) bond length is 1.98 Å. The Zn(2)-O(4) bond length is 1.99 Å. The Zn(2)-O(6) bond length is 2.02 Å. The Zn(2)-O(9) bond length is 2.04 Å. There are twenty inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.26 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(3), and one C(8) atom. The C(2)-C(3) bond length is 1.39 Å. The C(2)-C(8) bond length is 1.39 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2), one C(4), and one H(1) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(1) bond length is 0.95 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(6) atom. The C(4)-C(5) bond length is 1.50 Å. The C(4)-C(6) bond length is 1.39 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(3), and one O(4) atom. The C(5)-O(3) bond length is 1.26 Å. The C(5)-O(4) bond length is 1.26 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(4), one C(7), and one H(2) atom. The C(6)-C(7) bond length is 1.38 Å. The C(6)-H(2) bond length is 0.95 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(6), one C(8), and one O(5) atom. The C(7)-C(8) bond length is 1.39 Å. The C(7)-O(5) bond length is 1.36 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(2), one C(7), and one H(3) atom. The C(8)-H(3) bond length is 0.95 Å. In the ninth C site, C(9) is bonded in a single-bond geometry to one C(10) and one O(5) atom. The C(9)-C(10) bond length is 1.63 Å. The C(9)-O(5) bond length is 1.29 Å. In the tenth C site, C(10) is bonded in a distorted trigonal non-coplanar geometry to one C(11), one C(24), and one C(9) atom. The C(10)-C(11) bond length is 1.42 Å. The C(10)-C(24) bond length is 1.12 Å. In the eleventh C site, C(11) is bonded in a 2-coordinate geometry to one C(10) and one C(24) atom. The C(11)-C(24) bond length is 1.21 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(13), one O(6), and one O(7) atom. The C(12)-C(13) bond length is 1.50 Å. The C(12)-O(6) bond length is 1.26 Å. The C(12)-O(7) bond length is 1.25 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(19) atom. The C(13)-C(14) bond length is 1.40 Å. The C(13)-C(19) bond length is 1.39 Å. In the fourteenth C site, C(14) is bonded in a distorted single-bond geometry to one C(13), one C(15), and one H(4) atom. The C(14)-C(15) bond length is 1.39 Å. The C(14)-H(4) bond length is 0.95 Å. In the fifteenth C site, C(15) is bonded in a trigonal planar geometry to one C(14), one C(16), and one C(17) atom. The C(15)-C(16) bond length is 1.49 Å. The C(15)-C(17) bond length is 1.40 Å. In the sixteenth C site, C(16) is bonded in a distorted bent 120 degrees geometry to one C(15), one O(8), and one O(9) atom. The C(16)-O(8) bond length is 1.27 Å. The C(16)-O(9) bond length is 1.26 Å. In the seventeenth C site, C(17) is bonded in a distorted single-bond geometry to one C(15) and one H(5) atom. The C(17)-H(5) bond length is 0.95 Å. In the eighteenth C site, C(19) is bonded in a distorted single-bond geometry to one C(13) and one H(6) atom. The C(19)-H(6) bond length is 0.95 Å. In the nineteenth C site, C(23) is bonded in a single-bond geometry to one C(24) and one O(5) atom. The C(23)-C(24) bond length is 1.53 Å. The C(23)-O(5) bond length is 1.35 Å. In the twentieth C site, C(24) is bonded in a distorted trigonal non-coplanar geometry to one C(10), one C(11), and one C(23) atom. There are six 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(8) 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(19) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Zn(2) and one C(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(5) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Zn(2) and one C(5) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one C(23), one C(7), and one C(9) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Zn(2) and one C(12) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(12) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Zn(1) and one C(16) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Zn(2) and one C(16) atom. Linkers: 18 [C]1O[C][C]2[C][C]12.[O]C(=O)c1c[c]cc(C([O])=O)c1 ,18 [O]C(=O)c1cc(OC[C]2[C][C]2)cc(C([O])=O)c1. Metal clusters: 36 [Zn]. The MOF has largest included sphere 5.34 A, density 1.51 g/cm3, surface area 4216.63 m2/g, accessible volume 0.24 cm3/g