STRUCTURAL TRANSFORMATION OF A [Cd(CN)2]n FRAMEWORK. Michaele J. Hardie, Brendan F. Abrahams, Bernard F. Hoskins, Richard Robson and G. A. Williams, School of Chemistry, University of Melbourne, Pariville 3052, Victoria, Australia.
The cadmium cyanide - alcohol clathrate Cd(CN)2.2/3H2O.ButOH can undergo a remarkable single crystal to single crystal transformation involving extensive topological change1. The structural chemistry of cadmium cyanide derivatives is diverse and a number of geometrically and topologically distinct 3D frameworks structures are known2. The structure of Cd(CN)2.2/3H2O.ButOH is a honeycomb-like [Cd(CN)2]n framework with solvent t-butanol molecules occupying the hexagonalshaped channels3. The t-butanol molecules can be displaced by other volatile organic species and this solvent-exchange is accompanied by a reorganisation of the [Cd(CN)2]n framework to a single diamondoid network. The crystals retain their clarity, external morphology and single nature.
1. B. F. Abrahams, M. J. Hardie, B. F. Hoskins, R. Robson and G. A. Williams, J. Am. Chem. Soc.1992, 114, 10641
2. For example (a) T. Kitazawa, T. Kikuyama, M. Takahashi and M. Takeda, J. Chem. Soc., Dalton Trans. 1994, 2933; (b) T. Kitazawa, S. Nishikiori and T. Iwamoto, J. Chem. Soc., Dalton Trans. 1994, 3695.
3. B. F. Abrahams, B. F. Hoskins and R. Robson, J. Chem. Soc.; Chem. Commun. 1990, 60.