{{more citations needed|date=November 2008}}
'''Variational transition-state theory'''<ref name="Truhlar1984">{{cite journal | title=Variational Transition State Theory | journal=Annu. Rev. Phys. Chem.| year=1984 | first=D. | last=Truhlar |author2=Garrett, B. | volume=35 | pages=159–189| doi=10.1146/annurev.pc.35.100184.001111|bibcode = 1984ARPC...35..159T | url=https://digital.library.unt.edu/ark:/67531/metadc1209228/}}</ref> is a refinement of [[transition-state theory]]. When using transition-state theory to estimate a chemical [[reaction rate]], the dividing surface is taken to be a surface that intersects a first-order [[saddle point]] and is also perpendicular to the reaction coordinate in all other [[dimension]]s. When using variational transition-state theory, the position of the dividing surface between [[Reagent|reactant]] and [[Product (chemistry)|product]] regions is variationally optimized to minimize the reaction rate. This minimizes the effects of recrossing, and gives a much more accurate result.
==References== {{reflist}}
[[Category:Chemical kinetics]]