Key points are not available for this paper at this time.
Q. Huo, R. Xu, S. Li, Z. Ma, J. M. Thomas, R. H. Jones and A. M. Chippindale, J. Chem. Soc., Chem. Commun., 1992, 875 DOI: 10.1039/C39920000875
Huo et al. (Wed,) studied this question.