Electrochemical Evidence for Through-Space Orbital Interactions in Spiromethanofullerenes


  • This work was partially supported by the MRL Program and the National Science Foundation (award DMR-91-3048 and grants DMR-91-22536, DMR-91-11097, and CHE-89-08323). M. E. is indebted to the Alexander-von-Humboldt-Stiftung, and to Prof. P. C. Ford, UCSB, for support (Feodor-Lynen fellowship). M. P. and F. W. are indebted to NATO for a travel grant. N. M. is indebted to Universidad Complutense de Madrid for a “Del Amo” fellowship.


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The electron-accepting properties of the unsaturated spiromethanofullerene 1 are enhanced relative to those of the saturated analogue with a cyclohexanone unit and of C60. This can be attributed to through-space interactions between the addend and the carbon cluster.