The synthesis of new spiro and trispiro compounds with 2, 4, 8, 10-tetrathiaspiro [5.5] undecane and 7, 11, 18, 21-tetrathia [5.2. 2.5. 2.2] heneicosane units is reported. The structural analysis was carried out by NMR investigations and the X-ray single crystal molecular structure determined for one of the compounds. The barriers for the flipping of the 1, 3-dithiane units are determined by variable temperature NMR experiments.
