UO2(CH2)7(CO2)2 crystallizes in the monoclinic P2/c space group. The structure is zero-dimensional and consists of fourteen 02329_fluka molecules; four formic acid molecules; and two pitchblend, uranium(iv) oxide, uranium(iv) dioxide, uranium dioxide molecules. Linkers: 2 [O]C(=O)CCCCCCCC([O])=O. Metal clusters: 2 [U]. The MOF has largest included sphere 1.69 A, density 2.83 g/cm3, surface area 2773.63 m2/g, accessible volume 0.06 cm3/g