Intermediates in the reduction of N-2 to NH3: synthesis of iron eta(2) hydrazido(1-) and diazene complexes

摘要

Iron complexes containing hydrazido(1-) and diazene ligands were investigated as potential intermediates in the reduction of N-2 to NH3. Generation of cis-[Fe(DMeOPrPE)(2)(eta(2)-N2H3)](+) and cis-Fe(DMeOPrPE)(2)(eta(2)-N2H2) (DMeOPrPE = 1,2-bis(dimethoxypropylphosphino)ethane) was achieved by addition of base to cis-[Fe(DMeOPrPE)(2)(N2H4)](2+). The hydrazine, hydrazido(1-), and diazene complexes can be inter-converted by protonation/deprotonation reactions.