Ab Initio Determination of Molecular Properties,

Ab Initio Determination of Molecular Properties, PDF Author: Alan Hinchliffe
Publisher: CRC Press
ISBN:
Category : Art
Languages : en
Pages : 184

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Book Description
Computational quantum chemistry was born in the mid 1960s, and had by the early 1980s achieved considerable status as a structural tool within chemistry. The field has now developed to the point where it has its own journals. However, a major change is taking place in that most consumers of computational quantum chemistry are now experimentalists, who want answers to questions of the type "What if.....?" This change has come about because of the dramatic fall in computer hardware costs, the ready availability of large molecular structure packages and the international collaboration between quantum chemists on a scale rarely witnessed in science. This book aims to show what can be done by computational chemistry, and what kind of reliance might be placed on the predictions. The vast majority of investigations are made at the 'ab initio self consistent field' level, and the results of such calculations occupy a prominent role in this book. However, the user has to be aware of the limitations of this model, and the effects upon electron correlation, etc are discussed. Anyone who is contemplating making use of the techniques of computational quantum chemistry to rationalise or predict chemical behaviour will find this unique book of tremendous use.

Ab Initio Determination of Molecular Properties,

Ab Initio Determination of Molecular Properties, PDF Author: Alan Hinchliffe
Publisher: CRC Press
ISBN:
Category : Art
Languages : en
Pages : 184

Get Book Here

Book Description
Computational quantum chemistry was born in the mid 1960s, and had by the early 1980s achieved considerable status as a structural tool within chemistry. The field has now developed to the point where it has its own journals. However, a major change is taking place in that most consumers of computational quantum chemistry are now experimentalists, who want answers to questions of the type "What if.....?" This change has come about because of the dramatic fall in computer hardware costs, the ready availability of large molecular structure packages and the international collaboration between quantum chemists on a scale rarely witnessed in science. This book aims to show what can be done by computational chemistry, and what kind of reliance might be placed on the predictions. The vast majority of investigations are made at the 'ab initio self consistent field' level, and the results of such calculations occupy a prominent role in this book. However, the user has to be aware of the limitations of this model, and the effects upon electron correlation, etc are discussed. Anyone who is contemplating making use of the techniques of computational quantum chemistry to rationalise or predict chemical behaviour will find this unique book of tremendous use.

AB Initio Calculation of the Structures and Properties of Molecules

AB Initio Calculation of the Structures and Properties of Molecules PDF Author: Clifford E. Dykstra
Publisher: Elsevier Publishing Company
ISBN:
Category : Science
Languages : en
Pages : 296

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Book Description
This book is intended as a guide to the ab initio calculation of molecular structure and properties. It provides the necessary working information to enable the non-specialist to use and understand electronic structure methods and related computing technology, despite the high level of sophistication of quantum chemical methods. The initial chapters define and outline theoretical concepts, methods and computational approaches. Descriptive information and definitions of the terminology are given first; more detailed and mathematical explanations follow. These first chapters thus provide the background information needed to use the extensive literature of ab initio electronic structure theory. The next chapter first provides an overview of the technical issues relating to molecular properties, and then gives a rather detailed but general development. The latter part of this chapter is mainly intended for those first encountering the methodologies of properties determination and intending to pursue further developments. The other chapters provide reviews of calculations in the literature and assessments of factors influencing accuracy. The book is particularly useful to those who need a working understanding of ab initio calculations and well-suited to graduate students and researchers in computational and theoretical chemistry, researchers in electronic structure, spectroscopists and organic chemists.

Ab Initio Calculation of Molecular Properties

Ab Initio Calculation of Molecular Properties PDF Author: K. Somasundram
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description


Quantum-Mechanical Ab-initio Calculation of the Properties of Crystalline Materials

Quantum-Mechanical Ab-initio Calculation of the Properties of Crystalline Materials PDF Author: Cesare Pisani
Publisher: Springer Science & Business Media
ISBN: 3642614787
Category : Science
Languages : en
Pages : 331

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Book Description
A number of general-purpose, reasonably accurate and well-tested ab-initio codes for crystals are discussed in this book. The aim is to expand competence of their application in material sciences and solid-state physics. The book addresses particularly readers with a general knowledge in quantum chemistry and intends to give a deeper insight into the special algorithms and computational techniques in ab-initio computer codes for crystals. Three different programs which are available to all interested potential users on request are presented.

Compendium of Ab Initio Calculations of Molecular Energies and Properties

Compendium of Ab Initio Calculations of Molecular Energies and Properties PDF Author: Morris Krauss
Publisher:
ISBN:
Category : Molecules
Languages : en
Pages : 156

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Book Description


Comparison of Ab Initio Quantum Chemistry with Experiment for Small Molecules

Comparison of Ab Initio Quantum Chemistry with Experiment for Small Molecules PDF Author: R.J. Bartlett
Publisher: Springer Science & Business Media
ISBN: 9789027721297
Category : Gardening
Languages : en
Pages : 530

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Book Description
At the American Chemical Society meeting in Philadelphia, Pennsylvania, U.S.A., a symposium was organized entitled, "Comparison of Ab Initio Quantum Chemistry with Experiment: State-of-the-Art." The intent of the symposium was to bring together forefront experimen talists, who perform the types of clean, penetrating experiments that are amenable to thorough theoretical analysis, with inventive theore ticians who have developed high accuracy ab initio methods that are capable of competing favorably with experiment, to assess the current applicability of theoretical methods in chemistry. Contributions from many of those speakers (see Appendix A) plus others selected for their expertise in the subject are contained in this volume. Such a book is especially timely, since with the recent develop ment of new, more accurate and powerful ab initio methods coupled with the exceptional progress achieved in computational equipment, ab initio quantum chemistry is now often able to offer a third voice to resolve experimental discrepancies, assist essentially in the interpre tation of experiments, and frequently, provide quantitatively accurate results for molecular properties that are not available from experiment.

Ab Initio Molecular Dynamics

Ab Initio Molecular Dynamics PDF Author: Dominik Marx
Publisher: Cambridge University Press
ISBN: 1139477196
Category : Science
Languages : en
Pages : 503

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Book Description
Ab initio molecular dynamics revolutionized the field of realistic computer simulation of complex molecular systems and processes, including chemical reactions, by unifying molecular dynamics and electronic structure theory. This book provides the first coherent presentation of this rapidly growing field, covering a vast range of methods and their applications, from basic theory to advanced methods. This fascinating text for graduate students and researchers contains systematic derivations of various ab initio molecular dynamics techniques to enable readers to understand and assess the merits and drawbacks of commonly used methods. It also discusses the special features of the widely used Car–Parrinello approach, correcting various misconceptions currently found in research literature. The book contains pseudo-code and program layout for typical plane wave electronic structure codes, allowing newcomers to the field to understand commonly used program packages and enabling developers to improve and add new features in their code.

Density Functional and Ab Initio Analysis of Molecular Properties

Density Functional and Ab Initio Analysis of Molecular Properties PDF Author: Dariush Habibollahzadeh
Publisher:
ISBN:
Category :
Languages : en
Pages : 256

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Book Description


Comparison of Ab Initio Quantum Chemistry with Experiment for Small Molecules

Comparison of Ab Initio Quantum Chemistry with Experiment for Small Molecules PDF Author: R.J. Bartlett
Publisher: Springer Science & Business Media
ISBN: 9400954743
Category : Science
Languages : en
Pages : 512

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Book Description
At the American Chemical Society meeting in Philadelphia, Pennsylvania, U.S.A., a symposium was organized entitled, "Comparison of Ab Initio Quantum Chemistry with Experiment: State-of-the-Art." The intent of the symposium was to bring together forefront experimen talists, who perform the types of clean, penetrating experiments that are amenable to thorough theoretical analysis, with inventive theore ticians who have developed high accuracy ab initio methods that are capable of competing favorably with experiment, to assess the current applicability of theoretical methods in chemistry. Contributions from many of those speakers (see Appendix A) plus others selected for their expertise in the subject are contained in this volume. Such a book is especially timely, since with the recent develop ment of new, more accurate and powerful ab initio methods coupled with the exceptional progress achieved in computational equipment, ab initio quantum chemistry is now often able to offer a third voice to resolve experimental discrepancies, assist essentially in the interpre tation of experiments, and frequently, provide quantitatively accurate results for molecular properties that are not available from experiment.

Diatomic Molecules

Diatomic Molecules PDF Author: Robert Mulliken
Publisher: Elsevier
ISBN: 0323160077
Category : Science
Languages : en
Pages : 214

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Book Description
Diatomic Molecules: Results of Ab Initio Calculations provides the results obtained from quantum-mechanical calculations on the electronic structure of diatomic molecules. This six-chapter text also discusses the related concepts of ab initio calculation methods. This book considers first the primary methods used in the computation of molecular wave functions and of related properties. This topic is followed by discussions on the linear combination of atomic orbital and linear combination of mixed atomic orbital approximations and basis sets; electronic population analysis; spectroscopic transition probabilities; and the nature of chemical bonding. The remaining chapters examine the features of various theories that become prominent when two or more electrons are present, or are important in hydrides or homopolar and heteropolar molecules. This text will be of great value to organic and inorganic chemists and physicists.