Mg3La2C24(NO4)6(CH)18 crystallizes in the hexagonal P6/mcc space group. The structure consists of thirty-six 02329_fluka molecules inside a Mg3La2C24(NO4)6 framework. In the Mg3La2C24(NO4)6 framework, Mg(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. All Mg(1)-O(1) bond lengths are 2.08 Å. La(1) is bonded in a 9-coordinate geometry to three equivalent N(1) and six equivalent O(2) atoms. All La(1)-N(1) bond lengths are 2.63 Å. All La(1)-O(2) bond lengths are 2.52 Å. There are two inequivalent C sites. In the first C site, C(2) is bonded in a distorted single-bond geometry to one N(1) atom. The C(2)-N(1) bond length is 1.33 Å. In the second C site, C(3) is bonded in a distorted bent 120 degrees geometry to one O(1) and one O(2) atom. The C(3)-O(1) bond length is 1.24 Å. The C(3)-O(2) bond length is 1.27 Å. N(1) is bonded in a distorted trigonal planar geometry to one La(1) and two equivalent C(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Mg(1) and one C(3) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one La(1) and one C(3) atom. Linkers: 12 [O]C(=O)c1cccc(C([O])=O)n1. Metal clusters: 4 [La] ,6 [Mg]. The MOF has largest included sphere 7.13 A, density 1.39 g/cm3, surface area 3699.30 m2/g, accessible volume 0.33 cm3/g