HYPOTHETICAL CARBON MODIFICATIONS DERIVED FROM ZEOLITE FRAMEWORKS

sp3-Hybridized carbon atoms are the building blocks for the hypothetic al carbon modifications described here, which were obtained by replaci ng the MO4/2 units in zeolites (M = Si, Al, etc.) with C. According to calculations the modifications derived form zeolite ZSM-39 and melano phlogite are the most stable carbon allotropes after graphite and diam ond. Their carbon frameworks are constructed of face-sharing fullerene -like C20, C24, and C28 cages and can thus be considered polymerizatio n products of fullernes.