Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 128, Issue 23, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2938859
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The Kirkwood-Buff integrals (KBIs) for one-component systems are calculated from either the pair correlation functions or from experimental macroscopic quantities. As in the case of mixtures, the KBIs provide important information on the local densities around a molecule. In the low density limit (rho -> 0) one can extract from the KBI some information on the strength of the intermolecular forces. No such information may be extracted from the KBIs at higher densities. We used experimental data on densities and isothermal compressibilities to calculate the KBIs for various liquids ranging from inert molecules, to hydrocarbons, alcohols, and liquid water. (C) 2008 American Institute of Physics.
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