Hydrazinium Metal Halides

Hydrazinium metal haUde complexes are of two types anhydrous and hydrated. The hydrazinium chloride complexes, which are the most prevalent, are discussed here. 

1 Hydrazinium Metal Chloride Hydrates -(N2H5)2MCl4-2H20, M = Transition Metal 

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The most adequately characterized hydrazinium complexes consisting of coordinated metal ions are (N2H5)2M(S04)2 (M = Mg, Mn, Fe, Co, Ni, Cu, Zn, Cd, and the halides) [31]. In addition, single crystals have been analyzed of Co and Ni double sulfates synthesized under hydrothermal conditions using metal sulfates, hydrazine hydrate, and HF [32]. Table 1.8 lists various hydrazinium compounds along with their crystal data and N—N bond distances. 

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