Atomic charges, bond properties, and molecular energies / / Sandor Fliszar

• Record Nr.: UNINA9910825359403321
• Autore: Fliszar Sandor
• Pubbl/distr/stampa: Hoboken, N.J., : Wiley, c2009
• ISBN: 9786611938604; 9781281938602; 1281938602; 9780470405918; 0470405910; 9780470405895; 0470405899
• Edizione: [1st ed.]
• Descrizione fisica: 1 online resource (248 p.)
• Classificazione: VE 5300; VK 5700
• Disciplina: 541; 541.224
• Soggetti: Chemical bonds; Atomic theory
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references (p. 219-229) and index.
• Nota di contenuto: ATOMIC CHARGES, BOND PROPERTIES, AND MOLECULAR ENERGIES; CONTENTS; PREFACE; DEDICATION AND ACKNOWLEDGMENTS; I CHARGE DISTRIBUTIONS; 1 INTRODUCTION; 1.1 The Bond Energy Model; 1.2 Scope; 2 THEORETICAL BACKGROUND; 2.1 The Hartree-Fock Approximation; 2.2 Hartree-Fock-Roothaan Orbitals; 2.3 Configuration Interaction Calculations; 3 CORE AND VALENCE ELECTRONS; 3.1 Introduction; 3.2 Atomic Core and Valence Regions; 3.3 The Valence Region Energy of Atoms; 3.4 Summary; 4 THE VALENCE REGION OF MOLECULES; 4.1 Model; 4.2 The Core-Valence Separation in Real Space; 4.3 Formula for the Valence Region Energy4.4 Interface with the Orbital Model; 4.5 Approximation for the Valence Energy; 4.6 Perturbation of the Valence Region; 4.7 Summary; 5 INDUCTIVE EFFECTS; ATOMIC CHARGES; 5.1 Introduction; 5.2 The Inductive Effects; 5.3 Meaningful Atomic Charges; 5.4 Selected Reference Net Atomic Charges; 6 ATOMIC ; CHARGES AND NMR SHIFTS; 6.1 Scope; 6.2 Introduction; 6.3 Merits of Charge-Shift Relationships; 6.4 Aromatic Hydrocarbons; 6.5 Relationships Involving sp(3) Carbon Atoms; 6.6 Relationships Involving Olefinic Carbons; 6.7 Carbon Bonded to Nitrogen or Oxygen; 6.8 Correlations Involving N-15 NMR Shifts6.9 Correlations Involving O-17 Atoms; 6.10 Summary; 7 CHARGES AND IONIZATION POTENTIALS; 7.1 Conclusion; 8 POPULATION ANALYSIS; 8.1 The Standard Mulliken Formula; 8.2 Modified Population Analysis; 8.3 An Adequate Approximation; 8.4 Conclusions; II CHEMICAL BONDS: ENERGY CALCULATIONS; 9 THERMOCHEMICAL FORMULAS; 9.1 Basic Formulas; 9.2 Zero-Point and Heat Content Energies; 9.3 Concluding Remarks; 10 THE CHEMICAL BOND: THEORY (I); 10.1 Synopsis; 10.2 Nonbonded Interactions; 10.3 Reference Bonds; 10.4 Bond Energy: Working Formulas; 10.5 Basic Theoretical Parameters10.6 Saturated Molecules; 11 THE CHEMICAL BOND: THEORY (II); 11.1 Valence Atomic Orbital Centroids; 11.2 Unsaturated Systems; 11.3 Recapitulation; 12 BOND DISSOCIATION ENERGIES; 12.1 Scope; 12.2 Theory; 12.3 Nonbonded Interactions; 12.4 Selected Reorganizational Energies; 12.5 Applications; 12.6 Conclusion; III APPLICATIONS; 13 SATURATED HYDROCARBONS; 13.1 Acyclic Alkanes; 13.2 Cycloalkanes; 14 UNSATURATED HYDROCARBONS; 14.1 Olefins; 14.2 Aromatic Molecules; 15 NITROGEN-CONTAINING MOLECULES; 15.1 Amines: Charges of the Carbon Atoms; 15.2 Nitrogen Charges and Bond Energies15.3 Results; 16 OXYGEN-CONTAINING MOLECULES; 16.1 Ethers; 16.2 Alcohols; 16.3 Carbonyl Compounds; 17 PERSPECTIVES; APPENDIX: WORKING FORMULAS; A.1 Charge-NMR Shift Correlations; A.2 General Energy Formulas; A.3 Bond Energy Formulas; BIBLIOGRAPHY; INDEX
• Sommario/riassunto: The first book to cover conceptual quantum chemistry, Atomic Charges, Bond Properties, and Molecular Energies deftly explores chemical bonds, their intrinsic energies, and the corresponding dissociation energies, which are relevant in reactivity problems. This unique first-hand, self-contained presentation develops relatively uncomplicated but physically meaningful approaches to molecular properties by providing derivations of all the required formulas from scratch, developed in Professor Fliszar's laboratory. This book is vitally relevant to organic- and biochemists, molecular biologis