1. R. M. Fuoss,J. Chem. Educ. 32, 527 (1955).
2. J. E. Prue,Proceedings 3rd Symposium on Coordination Chemistry, Vol. 1, M. T. Beck, ed., (Debrecen, Hungary, 1970), p. 25.
3. A. K. Covington, J. G. Freeman, and T. H. Lilley,J. Phys. Chem. 74, 3773 (1970).
4. D. E. Irish and M. H. Brooker inAdvances in Infrared and Raman Spectroscopy, Vol. 2, R. J. H. Clark and R. E. Hester, eds., (Heyden, London, 1976), Chapter 6.
5. O. Redlich,Chem. Rev. 39, 333 (1946).