The compound [UO(NO)(HO)] · 2CHO was synthesized and studied by IR spectroscopy and X-ray diffraction. The structure consists of the neutral island groups [UO(NO)(HO)], which belong to the crystal-chemical group AB M ( A = UO, B = NO, M = HO) of uranyl complexes, and 1-adamantyl methyl ketone molecules. The characteristic features of the association of the complexes [UO(NO)(HO)] and 1-adamantyl methyl ketone molecules in the crystal structure via hydrogen bonds are considered with the use of Voronoi-Dirichlet polyhedra.