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Cation–π complexes between alkaline cations and molecular bowls related with fullerene: a DFT study
Published: 31 October 2010 by MDPI in The 14th International Electronic Conference on Synthetic Organic Chemistry session Computational Chemistry
Abstract: The formation of complexes between alkaline cations and molecular bowls (MBs), curved conjugated systems related with fullerene (C 60 ), is studied using DFT calculations. The series of MBs is constructed starting with benzene and additional hexagonal or pentagonal rings are added symmetrically to complete the C 60 structure. All the MBs studied form stable cation–π complexes by both of its sides: concave and convex. In all cases complexes with the cation in the convex side are more stable than their corresponding partner inside the bowl. The stability of the complexes is determined by the polarizing power of the cation and by the molecular electrostatic potential and the polarizability of the bowl. Additionally, size effects are observed when bulky cations are placed in the concave side of the largest bowls.