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Clathrate compounds of tetracyano complexes of nickel and platinum with phenol
Authors:A Sopková  J Bubanec
Institution:1. Department of Inorganic Chemistry, Faculty of Sciences, P. J. ?afarik's University, Ko?ice, ?SSR
Abstract:The double cyanides of nickel and platinum form structures capable of enclosing also phenol, for example, as guest molecule. Such clathrates are Ni(NH3)2Pt(CN)4 2 C6H5OH and Ni(en)2Pt(CN)4 · 0.14 C6H5OH. In the case of the tetracyano complexes, different thermal stabilities of their clathrate compounds could be achieved by alteration of the constituents of the cage structure and also of the guest molecules. According to the thermal behaviour, the clathrates may be divided into two groups: those which release the guest molecules in the first step of thermal decomposition (Ni(NH3)2Pt(CN)4· 2 C6H5OH), and those which lose the guest component only after partial destruction of the host cage (Ni(en)2Pt(CN)4 · 0.14 C6H5OH). The temperature ranges of loss of the guest component may determine the interval for their use in sorptive experiments. The temperature range for release of phenol from Ni(NH3)2Pt(CN)4 · · 2 C6H5OH is 55–244°, and from Ni(en)2Pt(CN)4 · 0.14 C6H5OH is 139–284°. The model host molecules NiPt(CN)4 · 6 H2O and Ni(en)3Pt(CN)4 · 3 H2O were also studied by thermal analysis.
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