Other examples of electron deficient bonding
The criterion of electron deficiency that has been used in this book is that a molecule or ion possesses too few bonding electrons to allow a pair to be allocated to every pair of atoms close enough to be regarded as covalently bonded. The types of compound covered by this definition have included at one extreme substances like diborane, in which the electron deficiency is effectively localized in one section of the molecule, a section which accordingly serves as a point of attack by electron-rich species. At the other extreme are substances like borane anions BnHn 2- and carboranes C2BnHn+2, in which the electron deficiency is spread over the whole of the molecular skeleton, which therefore presents no localized reactive site for attack by nucleophiles.
KeywordsBorane Anion Xenon Difluoride Cluster Bonding Ethyl Cation Transition Metal Species
Unable to display preview. Download preview PDF.
- 2.Olah, G. A., G. Klopman, and R. H. SchlosbergJ. Amer. Chem. Soc. 1969, 91 3261.Google Scholar
- 4.Clark, D. T., and D. M. J. Lilley, Chem. Comm., 1970, 549.Google Scholar
- 5.Clark, D. T., and D. M. J. Lilley, Chem. Comm., 1970, 1042.Google Scholar
- 6.Davis, B., D. H. Williams, and A. N. Y. Yeo, J. Chem. Soc. (B), 1970, 81.Google Scholar
- 10.See for example, Sargent, G. D., Bridged, non-classical carbonium ionsQuart. Rev. 1966, 20 301–371 for early work.Google Scholar
- 13.Penfold, B. R., Stereochemistry of metal cluster compounds, Perspectives in Struct. Chem., 1968, 2, 71–149;Google Scholar
- 17.Green, M. L. H., The transition elements, Vol. II of Organometallic Compounds by G. E. Coates, M. L. H. Green, and K. Wade, 3rd Edn., Methuen, London, 1968;Google Scholar
- 18.Wade, K., Chem. Comm., 1971, 792.Google Scholar