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Abstract

It was found after study of modifications of tetracyano complexes with 1,4-dioxane that a similar product is formed also by direct addition of 1,4-dioxane to a solution of [Ni(NH₃)_m][Ni(CN)₄] or to solid NiNi(CN)₄.nH₂O; and 1,4-dioxane is initially bonded as a guest molecule and then as a ligand. The amount of guest component or ligand in the compounds Ni(NH₃)_m(C₄H₈O₂)_aNi(CN)₄.(y-a)C₄H₈O₂.nH₂O and Ni(C₄H₈O₂)_aNi(CN)₄.(n-a)C₄H₈O₂ depends on the preparation conditions and on the conditions of storage of the solid product after isolation. The results of TA, IR, and GC analysis confirmed the presence of 1,4-dioxane bonded as a guest component and also 1,4-dioxane entering the host structure as a ligand.