Author/Authors :
Milani، نويسنده , , C. and Giambelli، نويسنده , , C. T. Roman، نويسنده , , H.E. and Alasia، نويسنده , , F. and Benedek، نويسنده , , G. and Broglia، نويسنده , , R.A. and Sanguinetti، نويسنده , , S. and Yabana، نويسنده , , K.، نويسنده ,
Abstract :
The production and isolation of small fullerenes and of their stable compounds and the knowledge of their chemistry should pave the way to the syntesis of novel carbon-based cluster-assembled materials like carbon clathrates, hollow diamonds and diamond-like thin films. In this quest, the knowledge of the valence of the small fullerenes is essential. We report here that the small fullerenes Cn (20 ≤ n ≤ 32), aside from the well known values associated with the local one electron picture of dangling bonds, display hidden valences connected with the free electron picture of the shell structure of π-electrons.
