handbook of carbon, graphite, diamond and fullerenes

The Fullerene Molecules 361
and in the crystal. The G^ is chestnut brown or goldenyellow
and the CM is olive-green. The electronic
absorption spectra for these fullerenes is shown in Fig.
15.6.f 8 l
As the number of carbon atoms increases, the s-character
in the Jt-orbital becomes less and less pronounced to
become zero in the case of the ideal graphite crystal,
when the pyramidization angle is zero and the number of
atoms is infinite.
Figure 15.4. Schematic of a C60 fullerene molecule.