Аннотация:The history of a unique stable and soluble complex Pd2(dba)3 has been considered starting with the classical oxi-dative addition and finishing by the modern synthesis of Pd nanoclusters catalysts absorbed on the carbon and non-car-bon polymer supports. Coordinatively non-saturated Pd(0) particles are used for constructing nanopalladium clusters immobilised which are active as catalysts in the cross-cou-pling reactions.