| Popis: |
The reaction of HBr with trans-[Mo(N2)2(dppee)(PR3)] (1), where dppee = O(CH2CH2PPh2)2 and PR3 = PPh3, PPh2Me, in CH2Cl2 yields a hydrazido(2-) complex which reacts further to form ammonia and hydrazine. During this reaction an intermediate can be isolated which upon hydrolysis produces hydrazine in almost quantitative yield. Addition of SnCl2 (4 mol), a two-electron reducing agent, to the reaction mixture causes a doubling of the ammonia yield and concomitant decrease in the yield of N2. The relationship to the electrochemical two-electron reduction of two different hydrazido(2-) complexes will be discussed. |
