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Ed. CNRS, Paris - 1958, Coll. "Colloques internationaux du Centre National de la Recherche Scientifique", in-8, reliure d'éditeur, 415 pages Bon état - Pour les envois hors de France, la tafication «livre & brochure» pour les frais de port a disparue.Les frais de port annoncés correspondent à une moyenne. Ils seront calculés au plus juste en fonction du poids de votre article.…

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Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The second volume of the proceedings of the international seminar devoted to locali zation and delocalization in quantum chemistry is divided into four parts. The first one is mainly concerned with the localizability of electrons in ionized and exited states. The second part shows how is it possible to take advantage of the localizability of electrons to compute molecular wave-functions. The third part of the book is an homogeneous analysis of the electronic collective excitation and of the motion of excitons in organic solids. The last section is devoted to the study of the role of electron localizability in the chemical reactivity of molecules. Concluding remarks are concerned with a careful analysis of the localizability concept itself in relation with a possible interpretation of the wave-mechanics. PART I ELECTRON LOCALIZATION IN IONIZED AND EXCITED STATES APPLICATIONS OF PAIR DENSITY ANALYSIS R. CONSTANCIEL and L. ESNAULT Centre de Mecanique Ondulatoire Appliquee, Paris, France Abstract. The method of pair density analysis is applied to various kinds of calculations. We examine the influence of the quality of the wavefunction and of the nuclear configuration; the problem of hybridization is discussed, as weIl as the relations between separability and excitation. 488 pp. Englisch.…

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Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The second volume of the proceedings of the international seminar devoted to locali zation and delocalization in quantum chemistry is divided into four parts. The first one is mainly concerned with the localizability of electrons in ionized and exited states. The second part shows how is it possible to take advantage of the localizability of electrons to compute molecular wave-functions. The third part of the book is an homogeneous analysis of the electronic collective excitation and of the motion of excitons in organic solids. The last section is devoted to the study of the role of electron localizability in the chemical reactivity of molecules. Concluding remarks are concerned with a careful analysis of the localizability concept itself in relation with a possible interpretation of the wave-mechanics. PART I ELECTRON LOCALIZATION IN IONIZED AND EXCITED STATES APPLICATIONS OF PAIR DENSITY ANALYSIS R. CONSTANCIEL and L. ESNAULT Centre de Mecanique Ondulatoire Appliquee, Paris, France Abstract. The method of pair density analysis is applied to various kinds of calculations. We examine the influence of the quality of the wavefunction and of the nuclear configuration; the problem of hybridization is discussed, as weIl as the relations between separability and excitation.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 488 pp. Englisch.…

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Zustand: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. I / Statistical Analysis of the Spatial Localizability of Molecular Electrons.- to the Loge Theory.- Discussion of Daudel Contribution.- Comparison of Loge and Virial Methods of Partitioning Molecular Charge Distributions.- Summary of the Discussion of Prof.…

Zustand: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. I / Statistical Analysis of the Spatial Localizability of Molecular Electrons.- to the Loge Theory.- Discussion of Daudel Contribution.- Comparison of Loge and Virial Methods of Partitioning Molecular Charge Distributions.- Summary of the Discussion of Prof.…

Buch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book is devoted to a general discussion about localization and delocalization in quantum chemistry. The first volume is concerned with molecules in their ground state. It is made of papers presented during the academic year 73-74 at an international seminar organized by some members of the 'Centre de Mecanique Ondulatoire Appli quee du C.N.R.S.' and some members of the 'Laboratoire de Chimie Quantique de l'Institut de Biologie Physico-Chimique'. It contains also reports of discussions which followed the presentation of invited papers. It is a 'forum' in which each expert gives his opinion on a work in progress. The volume is divided into four parts. The first one is a statistical analysis of the localizability of molecular electrons in the three-dimensional space. It contains an exposition of the basic ideas of the loge theory which provides a framework to do such an analysis. The second part is concerned with the separability of a molecular wave function and its expression in terms of localized elements. An exploration is made of the rela tionship between the localizability of electrons and the possibility of expressing the wave function in terms of localized orbitals. The third part is devoted to the partition of the energy in local contributions. 376 pp. Englisch.…

Buch. Zustand: Neu. Atoms and Molecules in the Ground State | Vol. 1: Atoms and Molecules in the Ground State | Odilon Chalvet (u. a.) | Buch | Localization and Delocalization in Quantum Chemistry | vii | Englisch | Springer Netherlands | EAN 9789027705594 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu Print on Demand. …

Buch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This book is devoted to a general discussion about localization and delocalization in quantum chemistry. The first volume is concerned with molecules in their ground state. It is made of papers presented during the academic year 73-74 at an international seminar organized by some members of the 'Centre de Mecanique Ondulatoire Appli quee du C.N.R.S.' and some members of the 'Laboratoire de Chimie Quantique de l'Institut de Biologie Physico-Chimique'. It contains also reports of discussions which followed the presentation of invited papers. It is a 'forum' in which each expert gives his opinion on a work in progress. The volume is divided into four parts. The first one is a statistical analysis of the localizability of molecular electrons in the three-dimensional space. It contains an exposition of the basic ideas of the loge theory which provides a framework to do such an analysis. The second part is concerned with the separability of a molecular wave function and its expression in terms of localized elements. An exploration is made of the rela tionship between the localizability of electrons and the possibility of expressing the wave function in terms of localized orbitals. The third part is devoted to the partition of the energy in local contributions.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 376 pp. Englisch.…

Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -I / Statistical Analysis of the Spatial Localizability of Molecular Electrons.- to the Loge Theory.- Discussion of Daudel Contribution.- Comparison of Loge and Virial Methods of Partitioning Molecular Charge Distributions.- Summary of the Discussion of Professor Bader's Paper.- II / Separability and Analysis of Wave Functions in Local Elements.- Group Density Analysis of Molecular Wave Functions Into Separated Elements.- Discussion of Constanciel Contribution: The Relationship Between Functional Localization and the Operator 'Number of Particles in a One-Particle Functional Subspace'.- Localization and Relocalization in Orbital Theories.- The Direct S.C.F. Computation of the Localised Molecular Orbitals of the Formaldehyde Molecule.- Summary of the Discussion of Professor Peters' Paper.- Comments About the Communication of Professor Peters.- Relation Between Localizability of Orbitals and Localizability of Electrons.- III / Expression of the Energy in Terms of Local Contributions.- Localizability of Energy and Electronic Density in Molecules and Crystals.- Localization and Symmetry Breaking of Molecular Hartree-Fock Orbitals.- Localization and Correlation.- Empirical and Theoretical Partitions of the Molecular Energy Into Local Contributions: Additive Systematic and Conformational Problems.- The Transferable Properties of Localized Orbitals.- The Nature of the Chemical Bond, an Energetic View.- IV / Molecules in an Electromagnetic Field, Additive Systematics.- The Localized Interpretation of the Observables of the Ground State (Introduction to Part IV).- A Discussion Upon the Additivity Concept of Dipole Moments.- Remark on the Theoretical Foundation of the Vectorial Additive Systematics for the Molecular Dipole Moments.- Diamagnetic Susceptibilities andElectronic Delocalization.- Analysis of NMR and EPR Coupling Constants Using Localized Orbitals.- Conclusions.- Nature and Classification of Chemical Bonds (Final Discussion).- The Degree of Delocalization and Its Relation with the Ground State Energy. The Problem of Aromaticity (Contribution to the Final Discussion).- How Delocalized Molecular Orbitals are built by the Interaction of Localized Group Orbitals.- Lone Pairs in Organic Molecules and How They Determine Conformations.- Sizes and Shapes of Electron Pairs.- Index of Names.- Index of Subjects.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 376 pp. Englisch.…

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book is devoted to a general discussion about localization and delocalization in quantum chemistry. The first volume is concerned with molecules in their ground state. It is made of papers presented during the academic year 73-74 at an international seminar organized by some members of the 'Centre de Mecanique Ondulatoire Appli quee du C.N.R.S.' and some members of the 'Laboratoire de Chimie Quantique de l'Institut de Biologie Physico-Chimique'. It contains also reports of discussions which followed the presentation of invited papers. It is a 'forum' in which each expert gives his opinion on a work in progress. The volume is divided into four parts. The first one is a statistical analysis of the localizability of molecular electrons in the three-dimensional space. It contains an exposition of the basic ideas of the loge theory which provides a framework to do such an analysis. The second part is concerned with the separability of a molecular wave function and its expression in terms of localized elements. An exploration is made of the rela tionship between the localizability of electrons and the possibility of expressing the wave function in terms of localized orbitals. The third part is devoted to the partition of the energy in local contributions. 376 pp. Englisch.…

Zustand: New. Print on Demand pp. 376 49:B&W 6.14 x 9.21 in or 234 x 156 mm (Royal 8vo) Perfect Bound on White w/Gloss Lam.