Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 126, Issue 23, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.2747243
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The long-range correction scheme for the density functional theory, combined with a van der Waals functional, is examined for its applicability to a wide variety of weakly bonded complexes including dispersion, dipole-induced dipole, dipole-dipole, and hydrogen-bonded complexes. The present method is able to describe geometries and binding energies of all these complexes accurately. Explicit inclusion of the long-range exchange and dispersion interactions is found to be important for the balanced description of various kinds of weak interactions. The present method is a promising alternative for high-level ab initio methods in calculations of large and complex systems, because it gives equally correct descriptions for various types of molecular interactions with much less computational cost. (c) 2007 American Institute of Physics.
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