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Collision Theory and Statistical Theory of Chemical Reactions (Paperback)
Loot Price: R1,586
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Collision Theory and Statistical Theory of Chemical Reactions (Paperback)
Series: Lecture Notes in Chemistry, 18
Expected to ship within 10 - 15 working days
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Since the discovery of quantum mechanics, more than fifty years
ago, the theory of chemical reactivity has taken the first steps of
its development. The knowledge of the electronic structure and the
properties of atoms and molecules is the basis for an un
derstanding of their interactions in the elementary act of any
chemical process. The increasing information in this field during
the last decades has stimulated the elaboration of the methods for
evaluating the potential energy of the reacting systems as well as
the creation of new methods for calculation of reaction probabili
ties (or cross sections) and rate constants. An exact solution to
these fundamental problems of theoretical chemistry based on quan
tum mechanics and statistical physics, however, is still impossible
even for the simplest chemical reactions. Therefore, different ap
proximations have to be used in order to simplify one or the other
side of the problem. At present, the basic approach in the theory
of chemical reactivity consists in separating the motions of
electrons and nu clei by making use of the Born-Oppenheimer
adiabatic approximation to obtain electronic energy as an effective
potential for nuclear motion. If the potential energy surface is
known, one can calculate, in principle, the reaction probability
for any given initial state of the system. The reaction rate is
then obtained as an average of the reaction probabilities over all
possible initial states of the reacting artic1es. In the different
stages of this calculational scheme additional approximations are
usually introduced."
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