The Fullerene Molecules

Fig. 3. Mass spectra of photoionized QgCa (top) and C7oCa) (bottom) the lower axis is labeled by the number of metal atoms on the fullerene molecule. The peaks at x = 32 for C Ca and x = 37 for C7oCa , correspond to a first metal layer around the fullerenes with one atom located at each of the rings. The edges at x = 104 and x = 114, respectively, signal the completion of a second metal layer.

Fig. 13a, b MEM charge densities of La2 C80 as the equi-contour (1.7 elk3) density surface along the aS,0 and b C2 axes. The La2 dodecahedron charge densities are picked out and shown beside the fullerene molecule... 

In the accepted molecular label given to an endohedral fullerene - such as Y C82 - the species before the sign denotes the content of the fullerene molecule, the latter being denoted by C ... 

We removed the top and bottom radialene units of the fullerene molecule to generate [10]cyclophenacene as described above. An alternative view of [60]fullerene may generate hemispherical bowl-shaped aromatic systems [lc, 37] for instance, fused corannulene C (C30H12, Chart 2.1), can be identified as half of fullerene [38]. 

The variety of the manifestation of interaction of external emission with the fullerene molecules, connected by the Van der Waals forces in the crystals, makes difficult understanding the mechanisms of the modification of their physical properties. Therefore, the study of these properties, in the first place, of changes in the electron structure under the action of different bombarding particles is of interest. 

Peculiarity of the fullerene molecule formation also reveals itself in a fullerite crystal structure. Cubic crystal lattices of fullerites and hydrofullerites behave like those of different metals and alloys. Fullerene molecules are distributed in the lattice sites while atoms of elements are distributed in the octa- and tetrahedral interstitial sites forming the interstitial solid solutions. Fullerene molecules substitute each other in the sites of lattice and form the substitution solid solutions. Forming exo- and endocompounds, fullerene molecules that are in the lattice sites can change considerably the properties of crystal, whereas its crystalline structure remain unchanged. 

In general, chemisorption of C28 at the double-dimer site is energetically more favorable. The fullerene molecule is well supported by the As dimers via formation of C-As cr-bonds. 

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