H*N, Hydrazine

H—N—N=N. It is prepared by the oxidation of hydrazine in strongly acid solution the oxidising agent used is usually nitrous acid (i.e. sodium nitrite is added to the acid solution of hydrazine) ... 

Figure 11.S Possible conformations of N2H4 with pyramidal N. Hydrazine adopts the gauche C l form with N N 145 pm, H-N- II 108°. and a twist angle of 95 as shown in the lower diagram.

This technique calls for drying the sample in a liq drying column using Linde 4A molecular sieves (water detn), and then using the near IR spectrum between 2.2 and 1.7 micrometers to determine the ratio of UDMH to diethylenetriamine] 5) H.N. Voltrauer, Hydrazine Analysis Using Chemiluminescence , SAM-76-37, Aero Chem Res Lab, Princeton, Contract F41609-76-C-0029 (1976) [A procedure is reported using the chemiluminescent reactions of ozone with monomethylhydrazine and Aero-zine-50 (UDMH/hydrazine in 50/50 wt %) to... 

Robert Friedel In your calculations on the C-H-N system have you considered species related to hydrazine ... 

To 60 mL absolute EtOH there was added 12.2 g 1-(2,5-dimethoxy-4-chlorophenyl)-2-(phthalimido)ethane and 2.9 mL of 100% hydrazine. The solution was held at reflux for 15 min. After cooling, the cyclic hydrazone by-product was removed by filtration, and the alcoholic mother liquors taken to dryness under vacuum. The residue was distilled at 145-155 °C at 0.05 mm/Hg to give 5.16 g of a clear, colorless oil. This was dissolved in anhydrous Et20 and treated with hydrogen chloride gas, producing 2,5-dimethoxy-4-chlorophenethylamine hydrochloride (2C-C) as white crystals with a mp of 220-221 °C. Anal. (Ci0H 5C12NO2) C,H,N. 

M) + pyrrolidine gave a mixture (10 1) of pyrrolidine enamine, mp lOB-1100 (MeOH), and H.N-dimethylenamine (5 hr reflux, 97% yield) which, on reduction (Raney nickel-hydrazine), gave the indole (93% yield). 

Hydrazine Azide Hemiammonate, (N,H, N,),NH mw 167.21, N92.16% wh delq crysts which exhibit extreme hygr on exposure to air but... 

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