HYDRAZINE METAL MALONATES AND

Hydrazine metal malonates and succinates, 180 Hydrazinemetal nitrates, 181 Hydrazinium azides, 181 Hydrazinium salts, 181 Hydrazones, 182... 

Several octahedral dihydrazine metal (II) salts of this class were prepared and thermally decomposed. The succinates and malonates of nickel and cadmium decomposed explosively [1]. A later paper on mixed metal bis-hydrazine malonates of cobalt with magnesium, manganese, nickel, zinc or cadmium recommends that decomposition, in a pre-heated crucible at 500°C, be of small quantities only. The same workers have reported exothermic decomposition of similar hydrazine complexed salts of other small organic acids. 

There have been few reactivity studies of heterometallacyclopropenes but the reactivity of cationic thioniumtungstacyclopropene (36) has been studied in detail. A variety of nucleophiles are known to add to the ring carbon including thiolates, phosphines, pyridines, and malonate (Equation (3)). Hydrazines and alkyl and aryl amines also appear to add but then undergo elimination to metal carbynes <860M2489>. 

Hexagonal prisms mp 58° dj 2.9508 bp 260. Very sol in water so] in sulfuric acid insol in ammonia dec in alcohol. Very deliquescent. Reduced by hydrobromic acid, hydriodic acid, hydrogen sulfide, hydroxylamine hydrochloride, phenyl hydrazine, formic acid, oxalic acid, malonic acid, pyruvic acid, acetyl chloride, and several metals. 

Apart from the above applications, hydrazine hydrate is also used in preparing organic derivatives, like hydrazones and hydrazides such as carbohydrazide (CH), oxalyl dihydrazide (ODH), malonic acid dihydra-zide (MDH), tetra formal tris azine (TFTA) and so on, from the corresponding ketones and aldehydes. Hydrazones have been investigated as solid fuels in hybrid rockets [40]. The hydrazides have been exploited as combustible fuels with metal nitrate oxidizers in the preparation of nanocrystalline oxide materials [41]. 

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