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Molecular Electronic Structures: An Introduction
The present book is an introduction to molecular electronic structural theory. It is aimed at students who have reasonable familiarity with digerential and integral calculus and are beginning a study of the physical description of chemical systems. We have decided to concentrate on the description of ground state electronic structures, or, in other words, the principles of chemical bonding in molecules. In this important respect the
present volume differs from our earlier book "Molecular Orbital Theory" (Benjamin, 1964-), which included a strong emphasis on the description of electronic excited states.
In our treatment of molecular wave functions we make use of "symmetry operators", the latter being operators that leave the Hamiltonian unchanged. By using such symmetry operators, it is possible to characterize the electronic structures of molecules. In our opinion, this approach provides good preparation for later studies that may be undertaken in which formal group theory is employed.
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