ИСТИНА

Among the materials most promising for hydrogen storage a special role is taken by tetrahydroborate salts (BH4-) and ammonia-borane (NH3BH3). Indeed, the homogeneously-catalyzed dehydrogenation/hydrolysis of these compounds is the effective chemical path to exploit them as hydrogen storage materials. Coordination compounds containing BH4− ligands possess many other practically valuable properties and may be used as selective reducing agents, precursors for the production of molecular or nanostructured borides, hydrides and other inorganic materials, and also as discrete catalysts for carrying out important industrial processes. In this talk, we discuss the role of non-covalent interactions in reactions of transition metal tetrahydroborate and hydride complexes, that involve proton transfer and hydride transfer steps and eventually lead to H2 evolution.1-5 Our studies on the mechanisms of amine boranes dehydrogenation catalyzed by various transition metal hydrido complexes showed the importance of relatively weak metal-ligand interactions for keeping the active conformation of catalyst or for its activation.