作者: Craig E. Moore , Beatriz H. Cardelino , Donald O. Frazier , Julian Niles , Xia-Qian Wang
DOI: 10.1016/S0166-1280(98)00284-X
关键词: Hamiltonian (quantum mechanics) 、 Chemistry 、 Bond length 、 Density functional theory 、 Valence electron 、 Molecular physics 、 Quantum mechanics 、 Aromaticity 、 Fullerene 、 Polarizability 、 Hyperpolarizability 、 Physical and Theoretical Chemistry 、 Biochemistry 、 Condensed matter physics
摘要: Abstract The static third-order polarizabilities ( γ ) of C 60 , 70 five isomers 78 and two 84 were analyzed in terms three properties, from a geometric point view: symmetry; aromaticity; size. polarizability values based on the finite field approximation using semiempirical Hamiltonian (AM1) applied to molecular structures obtained density functional theory calculations. Symmetry was characterized by group order. selection six-member rings as aromatic determined an analysis bond lengths. Maximum interatomic distance surface area parameters considered with respect Based triple linear regression analysis, it found that α these molecules respond differently geometrical properties: depends almost exclusively while is affected combination number rings, length order, decreasing importance. In case valence electron contributions provide same information all-electron estimates. For best correlation coefficients are when estimates used dependent parameter ln( instead .