The solid products obtained by reacting sulphur and selenium containing donor molecules and halogens (I₂, Br₂) and interhalogens (IBr, ICl) are reviewed. All the data are organized in two main sections, according to the nature of the compounds: charge-transfer (C.T.) adducts and oxidation products of the donor, which include mainly hypervalent chalcogen compounds, dications with a chalcogen-chalcogen bond and two- chalcogen-coordinated iodine(I) complexes. Particular attention has been devoted to find analogies among the different classes of compounds in terms of their structural features. The FT-Raman frequencies observed for I₂- and IBr-adducts are correlated to I-I and I-Br bond elongations.