Hydroxylamine, hydrazine, hydrazoic acid and azide ion

The reduction of NH2OH is one stage in the reduction of N03 to NH3- It is formally closely related to the Fenton reaction, the stoichiometry in acidic solution being 

Higginson et, have used vinyl monomers to capture the radical intermediate, which turned out to be NH2 when Ti(III) was employed as reductant. Brown and Drury measured the nitrogen isotope elfect for the reduction of several 

Two studies have been made of the reductions of NH2OH and its analogues by Cr(ri) perchlorate which dilfer seriously both as regards the results and their interpretation. The results of both studies are combined in Table 22. Wells and Salam find NH2OH and N2H4 to be much more reactive towards Cr(II) than do Taube et (who find no reaction with N2H4 in 24 h at 25 °C). 

Arrhenius parameters for the reduction of species containing N-N and N-O BY chromous ion (/ = 1.0 M) 

However both groups agree on the stoichiometries, which are all of the type 2 Cr(n) 1 reductant molecule, and on the rate laws, which are generally 

---