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Hydrazine salts studies

T. Cuitius prepared hydrazoic acid by the action of the red gases evolved from a mixture of nitric acid and arsenic trioxide upon a dil. ice-cold soln. of hydrazine hydrate and A. Sabaneeff and E. Dengin obtained a 10-12 per cent, yield of hydrazoic acid by heating hydrazine sulphate with nitric acid (sp. gr. 1 3). The formation of hydrazoic acid by heating various hydrazine salts (q.v.) was studied by J. W. Turrentine. [Pg.331]

P-coupling occurs in the formation of azophosphonic esters [ArN2PO(OCH3)2] from diazonium salts and dimethyl phosphite [HPO(OCH3)2] (Suckfull and Hau-brich, 1958). P-coupled intermediates are formed in the reaction between diazonium salts and tertiary phosphines, studied by Horner and Stohr (1953), and by Horner and Hoffmann (1956). The P-azo compound is hydrolyzed to triphenylphosphine oxide, but if a second equivalent of the tertiary phosphine is available, phenyl-hydrazine is finally obtained along with the phosphine oxide (Scheme 6-26 Horner and Hoffmann, 1958). It is likely that an aryldiazene (ArN = NH) is an intermediate in the hydrolysis step of the P-azo compounds. [Pg.126]

In this study, the chemical reduction in aqueous solution using conventional and ultTMonic hydrothermal reduction method were conducted for the preparation of fine nickel powders from the aqueous solution of nickel salt by reducing with hydrazine. The differences in the reaction parametera and final product properties resulting from two methods were identified to find the effects of ultrasound. [Pg.773]

The pentazolate anion. Ns (11.2), is estimated to have a half-life of 2.2 days, whereas that of the parent pentazole HN5 is predicted to be only ca 10 min in methanol at 0 Although HN5 is unknown, the cyclic anion N5 has been detected by tandem mass spectrometric studies of 4-hydroxyphenylpentazole. Similarly to its congener P5 (Section 11.2), N5 (isoelectronic with cyclopenta-dienide [C5H5] ) has the potential to form metallocene-like complexes. The acyclic (V-shaped) cation Ns has been isolated as a hexafluoroantimonate salt, which decomposes at ca 70 °C. The estimated energy density of [N5] [N5] is approximately twice that of hydrazine, a well-known rocket propellant, suggesting that this ionic polynitrogen allotrope would be an excellent monopropellant... [Pg.212]

The explosive properties of these salts were partially studied by Ephraim and Jahnsen [120] and were later investigated in detail by Friedrich and Vervoorst [121]. The latter also investigated the analogous combinations described by Franzen and Mayer [122], in which ammonia was replaced by hydrazine,... [Pg.230]


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Hydrazines salts

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