Ab initio calculation of bowl, cage, and ring isomers of C20 and C20−

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Ab initio calculation of bowl, cage, and ring isomers of C20 and C20-.

High-level ab initio calculations have been carried out to reexamine relative stability of bowl, cage, and ring isomers of C(20) and C(20)(-). The total electronic energies of the three isomers show different energy orderings, strongly depending on the hybrid functionals selected. It is found that among three popular hybrid density-functional (DF) methods B3LYP, B3PW91, PBE1PBE, and a new hybri...

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ژورنال

عنوان ژورنال: The Journal of Chemical Physics

سال: 2005

ISSN: 0021-9606,1089-7690

DOI: 10.1063/1.1903946