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Ab Initio Calculations: Methods and Applications in Chemistry (Lecture Notes in Chemistry, 16) by Petr Čársky, Miroslav Urban (auth.) is a nonfiction available to read on EtoBox.

What is Ab Initio Calculations: Methods and Applications in Chemistry (Lecture Notes in Chemistry, 16) about?

Until recently quantum chemical ab initio calculations were re stricted to atoms and very small molecules. As late as in 1960 Allen l and Karo stated : "Almost all of our ab initio experience derives from diatomic LCAO calculations ••• N and we have found in the litera ture "approximately eighty calculations, three-fourths of which are for diatomic molecules ••• There are approximately twenty ab initio calculations for molecules with more than two atoms, but there is a decided dividing line between the existing diatomic and polyatomic wave functions. Confidence in the satisfactory evaluation of the many -center two-electron integrals is very much less than for the diatom ic case". Among the noted twenty calculations, SiH was the largest 4 molecule treated. In most cases a minimal basis set was used and the many-center two-electron integrals were calculated in an approximate way. Under these circumstances the ab initio calculations could hard ly provide useful chemical information. It is therefore no wonder that the dominating role in the field of chemical applications was played by semiempirical and empirical methods. The situation changed essentially in the next decade. The proble

Who reads Ab Initio Calculations: Methods and Applications in Chemistry (Lecture Notes in Chemistry, 16)?

Author

Petr Čársky, Miroslav Urban (auth.)

Publisher

Springer-Verlag Berlin Heidelberg

Published

1980

Language

EN

ISBN

9780387100050

Category

nonfiction

Subjects

Science, Chemistry, Stem