Collect. Czech. Chem. Commun. 1987, 52, 2890-2899

Clathrates of tetracyanonickelates containing 1,4-dioxane

Mária Reháková and Anna Sopková

Department of Inorganic Chemistry, Faculty of Natural Sciences, P. J. Šafárik University, 041 54 Košice


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.