Dinitrogen complexes electroreduction

The potential for a cyclic system using electroreductive conditions was demonstrated by controlled potential electrolysis of [MoBr NN(CH ) H2 (dppe)2] Br, in thf under N2, which gave iV-aminopyrrolidine and the parent dinitrogen complex trans-[Mo(N2)2(dppe)2]... 

CoUmanJP, Hutchison JE, Lopez MA, GudardR, Reed ILA. Toward a dinitrogen electroreduction catalyst characterization of a bis-ammine, a p2-hydrazine, a p2-diazene, and a remarkably stable p2-dinitrogen complex of a ruthenium cofecial diporphyrin. J Am Chem Soc 1991 113 2794-2796. 

Electroreduction of N2 to NH3 has also been examined using gas-diffusion electrodes modified by 14 different metal phthalocyanines.320 It was found that the Sn-Pc complex is the best catalyst in terms of current efficiency and stability of the electrode for the electrochemical dinitrogen activation. 

Dinitrogen-coordinated complexes of Ti, Zr, Mo, and W have been studied as potent mediators in electrolysis media [491-495]. Preliminary results from the electroreduction of [Mo(N2RR )(S2C-NMe2)3]" reveal that the two-electron reduction of the cation leads to electroactivation of the... 

Combining the electroreduction of the hydrazido Mo complex (377) and the regeneration of the dinitrogen Mo complex (374) opens up the possibility of an electrochemical... 

Also called nitrous oxide, dinitrogen monoxide, sweet air or laughing gas, N2O is the most stable nitrogen oxide which - coupled with its IR absorption properties - makes its participation inevitable in the greenhouse effect. It can be electroreduced in alkatine and acidic media. Current efficiencies up to 100 % have been reported. Pd and macrocycUc amine complexes catalyze this electroreduction to N2(g> [2, 5]. The presence of N2O can be used to advantage by forming an N2O-H2 fuel cell [5]. 

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