References
- Denney , D. B. , Denney , D. Z. , Hammond , P. J. and Hsu , Y. F. 1981 . J. Am. Chem. Soc. , 103 : 2340
- Denney , D. B. , Denney , D. Z. , Hammond , P. J. and Wang , Y. P. 1981 . J. Am. Chem. Soc. , 103 : 1785
- Dear , R. E. A. , Fox , W. B. , Frederics , R. J. , Gilbert , E. E. and Huggins , D. K. 1970 . Inorg. Chem. , 9 : 2590
- Luckenbach , R. 1973 . Dynamic Stereochemistry of Pentaco-ordinated Phosphorus and Related Elements , 180 Stuttgart : G. Theime .
- Akitt , J. W. 1983 . NMR and Chemistry , 2nd Edition , 68 – 75 . London : Chapman and Hall .