IR Spectroscopic Study of M ( Benzoic Acid ) 2 Ni ( CN ) 4 · ( 1 , 4 - Dioxane ) Clathrate ( M = Ni , Cd and Co )

In various studies, Hofmann-type clathrates, given by the general formula ML2Ni(CN)4·G, were produced. Here M is a transition metal atom, L a ligand molecule or half of a bidentate ligand molecule, and G a guest molecule [1]. The clathrates are of interest because of their inclusion behavior and use as catalysts, anti-oxidants and stabilizing agents [2]. Infrared spectroscopy is one of the best ways for the investigation of the guest-host interactions in Hofmann-type clathrates. In our previous study we reported Hofmann-type complexes for the benzoic acid (BA) [3]. In this study we used 1,4-dioxane (D) as a guest (G) molecule to produce new Hofmann-type clathrates with the formula M(BA)2Ni(CN)4·G, where M is a transition metal atom (Ni, Cd or Co).