NaCu2(CO2)4(CH2)2 crystallizes in the orthorhombic Pnma space group. The structure consists of eight 02329_fluka molecules inside a NaCu2(CO2)4 framework. In the NaCu2(CO2)4 framework, Na(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(4) atoms. Both Na(1)-O(2) bond lengths are 2.49 Å. Both Na(1)-O(4) bond lengths are 2.46 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(3) atoms. Both Cu(1)-O(1) bond lengths are 1.92 Å. Both Cu(1)-O(3) bond lengths are 1.92 Å. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(4) atoms. Both Cu(2)-O(2) bond lengths are 2.00 Å. Both Cu(2)-O(4) bond lengths are 1.97 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(1)-O(1) bond length is 1.22 Å. The C(1)-O(2) bond length is 1.27 Å. In the second C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(3) and one O(4) atom. The C(3)-O(3) bond length is 1.25 Å. The C(3)-O(4) bond length is 1.24 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(1), one Cu(2), and one C(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cu(1) and one C(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Cu(2), and one C(3) atom. Linkers: 8 [O]C(=O)CC([O])=O. Metal clusters: 4 [Na] ,8 [Cu]. The MOF has largest included sphere 4.39 A, density 1.64 g/cm3, surface area 3063.97 m2/g, accessible volume 0.26 cm3/g