1 2 Ju l 1 99 5 A Classification Scheme for Toroidal Molecules
نویسنده
چکیده
The last decade witnessed the discovery of diverse hollow graphitic structures [1]. Several spherical [2] and cylindrical [3] structures have been observed. A natural question is whether structures with other topologies, such as tori, also occur. It is reasonable to expect that molecules that are multiply connected and have negative curvature (i.e. have regions that approximate a saddle) would have distinct physical and chemical properties. For example, certain quantum and transport phenomena depend on multiconnectivity [4], and it is
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