Na4C3O10Cl(CH3)2CH6 crystallizes in the tetragonal I4_1/acd space group. The structure consists of thirty-two 02329_fluka molecules and sixteen methane;molecular hydrogen molecules inside a Na4C3O10Cl framework. In the Na4C3O10Cl framework, there are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(5), two equivalent O(3), and two equivalent O(4) atoms. The Na(1)-O(1) bond length is 2.38 Å. The Na(1)-O(5) bond length is 2.39 Å. There is one shorter (2.45 Å) and one longer (2.80 Å) Na(1)-O(3) bond length. There is one shorter (2.34 Å) and one longer (2.39 Å) Na(1)-O(4) bond length. In the second Na site, Na(2) is bonded to two equivalent O(4) and four equivalent O(5) atoms to form distorted edge-sharing NaO6 pentagonal pyramids. Both Na(2)-O(4) bond lengths are 2.36 Å. There are two shorter (2.38 Å) and two longer (2.58 Å) Na(2)-O(5) bond lengths. In the third Na site, Na(3) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both Na(3)-O(1) bond lengths are 2.40 Å. Both Na(3)-O(2) bond lengths are 2.50 Å. Both Na(3)-O(3) bond lengths are 2.41 Å. There are two inequivalent C sites. In the first C site, C(3) is bonded in a distorted bent 120 degrees geometry to two equivalent O(5) atoms. Both C(3)-O(5) bond lengths are 1.25 Å. In the second C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(1)-O(3) bond length is 1.25 Å. The C(1)-O(4) bond length is 1.26 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Na(3), and one Cl(1) atom. The O(1)-Cl(1) bond length is 1.45 Å. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Na(3) and one Cl(1) atom. The O(2)-Cl(1) bond length is 1.43 Å. In the third O site, O(3) is bonded in a 1-coordinate geometry to one Na(3), two equivalent Na(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), two equivalent Na(1), and one C(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), two equivalent Na(2), and one C(3) atom. Cl(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. Linkers: 16 C.[H].[H].[O][C]=O ,32 CC([O])=O ,16 [O].[O].[O].[O]Cl. Metal clusters: 64 [Na]. The MOF has largest included sphere 5.66 A, density 1.60 g/cm3, surface area 2314.61 m2/g, accessible volume 0.17 cm3/g