Acknowledgements
We wish to thank the Royal Commission for the Exhibition of 1851 for the award of a fellowship to Dr C. T. Imrie and the Science and Engineering Research Council for research studentships to Dr R. W. Date, Dr L. Taylor and Mr S. J. Roskilly as well as for a grant, GR/C/95428, towards the cost of the equipment used in this investigation.
Notes
†Permanent address: Department of Chemistry, University of Aberdeen, Meston Walk, Old Aberdeen AB9 2UE, Scotland.
‡Permanent address: Department of Chemistry, Imperial College, London SW7 2AY, England.
§Present address: School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, England.