Nonbenzenoid Aromatics

Nonbenzenoid Aromatics

1st Edition - January 1, 1971

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  • Editor: James P. Snyder
  • eBook ISBN: 9781483275659

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Description

Nonbenzenoid Aromatics, Volume II, provides an overview of the state of knowledge in the field of non-benzenoid aromatic compounds. The theme that threads its way through the six chapters is that of ""aromaticity,"" with each author making an effort to evaluate this concept in light of his own work. It is with this in mind that this treatise was initiated with an historical account tracing the development of the idea up to the discovery of the electron. The book begins with discussions of the estimation of the thermochemical and kinetic stability of a system which has not yet been synthesized and the calculation of electronic spectra. This is followed by separate chapters on the electron spin resonance (ESR) spectra of radical ions of nonbenzenoid aromatics; the theoretical and empirical bases of exaltation; and treatment of cyclic (4n + 2) π-electron systems with six or more π-electrons and bearing one or more formal charges. Subsequent chapters deal with the chemical binding and delocalization in phosphonitrilic derivatives, and cyclobutadiene-metal complexes.

Table of Contents


  • List of Contributors

    Preface

    Contents of Volume I

    1. Nonalternant Hydrocarbons, Radical Ions, and Their Heteroanalogs; Characteristics of Ground and Excited States

    I. Introduction

    II. Ground State Properties

    III. Excited State Properties

    IV. Effect of Addition or Removal of Electrons: Formation of Radicals and Radical Ions

    V. Introduction of a Heteroatom

    2. ESR Spectra of Radical Ions of Nonbenzenoid Aromatics

    I. Introduction

    II. Derivatives of Cyclobutadiene and Cyclooctatetraene

    III. Even Nonalternants

    IV. Compounds Related to [10]-, [14]-, and [18]Annulenes

    V. Radialenes

    VI. Hydrocarbons with an Odd Number of Centers

    3. Diamagnetic Susceptibility Exaltation as a Criterion of Aromaticity

    I. Introduction

    II. Theory

    III. Method

    IV. Exaltation Data and Their Interpretation

    V. Suggestions for Future Work

    4. Monocyclic and Polycyclic Aromatic Ions Containing Six or More π-Electrons

    I. Introduction

    II. Monocyclic Systems with Six π-Electrons

    III. Monocyclic Systems with Ten π-Electrons

    IV. Monocyclic Systems with More than Ten π-Electrons

    V. Physical Properties of Monocyclic Ions

    VI. Polycyclic Aromatic Ions

    VII. Homoaromatic Ions

    VIII. Conclusions

    5. Chemical Binding and Delocalization in Phosphonitrilic Derivatives

    I. Introduction

    II. General Considerations Affecting the Use of d-Orbitals in Bonding

    III. Theoretical Background

    IV. Experimental Evidence Relating to π-Bonding

    V. Conclusion

    6. Cyclobutadiene-Metal Complexes

    I. Introduction and Historical Background

    II. Preparation of Cyclobutadiene-Metal Complexes

    III. Cyclobutadiene-Metal Complexes as Reaction Intermediates

    IV. Reactions of Cyclobutadiene-Metal Complexes

    V. Physical Properties of Cyclobutadiene-Metal Complexes

    VI. Bonding in Cyclobutadiene-Metal Complexes

    VII. Aromatic Character of Cyclobutadiene-Metal Complexes

    Author Index

    Subject Index

Product details

  • No. of pages: 448
  • Language: English
  • Copyright: © Academic Press 1971
  • Published: January 1, 1971
  • Imprint: Academic Press
  • eBook ISBN: 9781483275659

About the Editor

James P. Snyder

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