Ruthenium Complexes for Catalytic Dehydrogenation of Hydrazine and Transfer Hydrogenation Reactions

Abstract

Catalytic dehydrogenation of hydrazine was achieved over iminopyridine ligated ruthenium-arene complexes, where the release of H₂ gas, as confirmed by GC-TCD, from hydrazine depends on reaction temperature, base, and solvents. NMR and MS studies indicated an in situ generation of a hydrazine-coordinated ruthenium species, a key intermediate of hydrazine dehydrogenation, via a coordination-assisted activation pathway.

Keywords: dehydrogenation; homogeneous catalysis; hydrazine; hydrogen; ruthenium.