Hydrazinium metal hydrazine carboxylates hydrates

HYDRAZINIUM METAL HYDRAZINE CARBOXYLATE HYDRATES -N2H5M(N2H3C00)3 H2O... 

SOLID SOLUTIONS OF HYDRAZINIUM METAL HYDRAZINE CARBOXYLATE HYDRATES - N2H5 Mv (Co/Ee/Mn)22 (N2H3COO)3 H2O... 

Table 4.8 Unit cell dimensions for the monoclinic hydrazinium metal hydrazine carboxylate hydrates and their solid solutions.

The reaction between metal thiocyanates and hydrazinium thiocyanates cannot be used to prepare hydrazinium metal thiocyanate complexes. Consequently, an alternate method is employed, namely, the decomposition of hydrazinium metal hydrazine carboxylates with dilute thiocyanic acid (<5%) [27,28]. Hydrazinium metal hydrazine carboxylates complexes N2H5M(N2H3C00)3 H20, where M = Co and Ni, are prepared from metal nitrates, sulfates, or chlorides and hydrazine hydrate saturated with carbon dioxide. The dilute thiocyanic acid is prepared by adding barium thiocyanate trihydrate to dilute sulfuric acid. 

Analogous to the synthesis method adopted for the preparation of hydrazinium metal sulfite hydrates, hydrazinium lanthanide sulfite hydrates, N2H5Ln(S03)2(H20)2, can be synthesized by the addition of hydrazine sulfite monohydrate to the respective anhydrous lanthanide hydrazine carboxylates M(N2H3COO)2 [10]. 

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