17 2022 2022-01-21 10.1016/j.molstruc.2021.132326 According to the NMR 1Н, 13С and X-ray analysis data molecules of 5,5-bis(bromomethyl)-2-trichloromethyl-1,3-dioxane in the crystalline phase and in solution have a chair conformation with an equatorial trichloromethyl group. The route of conformational transformations for isolated molecule and for a cluster with five chloroform molecules, as well as a transition states and barriers to the internal rotation of the axial and equatorial trichloromethyl group have been established using DFT approximation PBE/3ξ. © 2022 Elsevier B.V. https://repo.bashgmu.ru/publication/2162 https://repo.bashgmu.ru/files/2337