Post by Anders Hoveland on Aug 4, 2011 12:59:27 GMT -8
Triphosphonitrilic Hexahydrazide, P3N3(N2H3)6, consists of a hexagonal ring containing alternating phosphorous and nitrogen atoms, with two hydrazine groups on each phosphorous atom. The ring appears to be aromatic.
A dilute ether solution of hexachlorocyclotriphosphazene, (PNCl2)3, (2.57g in 50mL) is added slowly to a well-stirred suspension in anhydrous N2H4 in ether (8ml in 30ml). The resulting crystalline precipitate is removed from the solution, consisting of ether and a heavy lower layer containing the excess hydrazine and other byproducts from the reaction, by filtration in a closed system (avoiding the poisonous fumes). The crude product is purified by dissolving in water and reprecipitating the hydrazide by addition of ethanol. About 0.9 grams of the final product is obtained, about 35% yield.
Use of anhydrous reactants is necessary, because solubility of the product is greatly increased when hydrazine containing significant quantities of water is used.
Potentially many interesting energetic salts could be prepared from this compound, particularly the nitrate or nitroformate salts. The nitrate salt could imaginatively be considered to be a sort of hybrid between HNIW (Cl-20) and astrolite! structure P3N3(N2H4NO3)6, with formula P3,N21,H24,O18