Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 124, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2139668
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In recent publications [A. D. Becke and E. R. Johnson, J. Chem. Phys. 122, 154104 (2005); E. R. Johnson and A. D. Becke 123, 024101 (2005)] we have demonstrated that the position-dependent dipole moment of the exchange hole can be used to generate dispersion interactions between closed-shell systems. Remarkably accurate C-6 coefficients and intermolecular potential-energy surfaces can be obtained from Hartree-Fock occupied orbitals and polarizability data alone. In the present work, our model is extended to predict C-8 and C-10 coefficients as well. These higher-order coefficients are obtained as easily as C-6 and with comparable accuracy. (c) 2006 American Institute of Physics.
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