Title: An angle dependent site-renormalized theory for the conformations of n-butane in a simple fluid
Author(s):

	K.Dyer (Chemistry Depament, University of Houston, Houston, TX 77204-5003; Chemistry Depament, SUNY-Stony Brook, Stony Brook, NY 11794) ,
	J.Perkyns (Chemistry Depament, University of Houston, Houston, TX 77204-5003) ,
	B.Pettitt (Chemistry Depament, University of Houston, Houston, TX 77204-5003) ,
	G.Stell (Chemistry Depament, SUNY-Stony Brook, Stony Brook, NY 11794) ,

The angular dependent site-renormalized integral equation theory is developed to compute the dihedral conformation distribution and intermolecular pair distributions of n-butane at infinite dilution in a Lennard-Jones solvent. The equations take advantage of the topological diagrammatic expansion of the full angular dependent molecular system by resumming the series in conjunction with the intramolecular degree of freedom. To first order in an angular basis set, the numerical results of these site-renormalized equations are a systematic quantitative improvement over previousmethods. In paicular, the thermodynamics and conformational distribution of the solute are essentially indistinguishable from simulation.

Key words: liquid structure, integral equations, rotameric states
PACS: 05.20.-y 05.70.-a 61.20.Gy

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