With the exception of the formation of coordinatively saturated adducts, synergic extractions using chelating extractants are reviewed. Emphasis is laid on less common synergic systems. These include the formation of adducts containing also inorganic anions, extraction of chelates in the presence of bulky organic cations, influence of various anions on the extraction of chelates, the use of acidic synergic agents, extraction with two chelating agents, and some other systems.