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Reaction Heats and Bond Strengths - 1st Edition - ISBN: 9780080137698, 9781483186504

Reaction Heats and Bond Strengths

1st Edition

Based on a Series of Lectures Given to Postgraduate Students at the University of Keele, 1960

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Author: C. T. Mortimer
eBook ISBN: 9781483186504
Imprint: Pergamon
Published Date: 1st January 1962
Page Count: 242
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Reaction Heats and Bond Strengths presents the variations in the heats of particular types of reaction. This book covers a variety of topics, including the hydrogenation and polymerization of olefinic compounds, the dissociation of organic and organo-metallic compounds, and the molecular-addition compounds. Organized into 10 chapters, this book begins with an overview of the concept of bond energy that can be very useful where a comparison is being made between two dissimilar molecules. This text then examines the strain in cyclopropane and cyclobutane, which is largely a result of angular strain due to compression of the tetrahedral angle in the carbon–carbon bonding. Other chapters consider the experimental thermochemical data for some conjugated molecules. This book discusses as well the significance of representing a molecule, which originated from the concept of resonance. The final chapter deals with bond strength in phosphorus, silicon, and sulfur compounds. This book is a valuable resource for postgraduate students.

Table of Contents

1. The Thermochemical Approach


Energy changes in Heats of Reaction

Definitions of Bond Strength

1. Bond Energies

2. Bond Dissociation Energies

Heats of Reaction

Experimental Methods

2. Strain Energies in Saturated and Unsaturated Organic Compounds

Saturated Cyclic Compounds

1. Cyclo-alkanes

2. Heterocyclic Compounds

3. Decalins

4. Perhydroanthracenes

5. Dimethylcyclohexanes

6. Dimethylcyclopentanes

7. Hydrindanes

Unsaturated Compounds

1. Cyclic Olefins

2. Cyclic or^o-Substituted Benzene Derivatives

3. Acyclic Olefins

Polycyclo-alkanes and Alkenes

Exo-Endo Isomerism in Olefins


3. Stabilization Energiesm in Non-Aromatic Compounds


Conjugation and Hyper conjugation

1. Olefins

2. Acetylenes

Polar Effects



4. Strain and Resonance Energies in Aromatic Compounds


Experimental Determination of Resonance Energies

1. Bond Compressional Energy

2. Hybridization Changes

3. Charge Separation

4. Steric Effects

Five- and Seven-membered Ring Systems

Four- and Eight-membered Ring Systems

Cat a-Condensed Hydrocarbons

Polycyclic Hydrocarbons

1. Stabilization Energies

2. Strain Energies



5. Polymerization Energies

Heats of Self-Polymerization Reactions

Free Energies and Entropies


Polymerization of Cyclic Compounds

1. Cyclo-alkanes

2. Heterocyclic Compounds

6. Molecular Addition Compounds


Steric and Inductive Effects

Acceptor Molecules: n-Bonding

Donor Molecules: Donor Strength and Reorganization Energy

Addition compounds: ^-Bonding

1. Acceptor Atoms with Available d-Orbitals

2. Acceptor Atoms with pseudo pπ-Orbitals


7. Bond Dissociation Energies and Heats of Formation of Free Radicals


Heats of Formation of Free Radicals

1. Alkyl Radicals

2. Vinyl Radical

3. Benzyl Radical

4. Phenyl Radical

5. Cyanide Radical

6. Halogen-substituted Alkyl Radicals

7. Alkoxy Radicals

8. Thioalkoxy Radicals

9. Alkyl Amino Radicals

10. Radicals RCOO

Stepwise Dissociation Energies

8. Metal-Carbon and Metal-Halogen Bonds


Mean Bond Dissociation Energies

1. Representative and 6-Group Elements

2. Transition Metals, Carbonyls

3. Cyclopentadienyl and Benzene Compounds

Stepwise Dissociation Energies

1. b-Group Metal Alkyls

2. Transition Metal Halides


9. Ionization Energies in Aqueous Solution


Heats of Neutralization of Strong Acids and Strong Bases

Aliphatic Acids

Methyl-substituted Compounds

1. Picolines

2. Cresols

3. Chlorophenols

4. Nitrophenols

5. Toluidines

6. Methyl-Benzoic Acids

7. Lutidines and Xylenols

8. Summary of Data for Methyl-substituted Compounds

Halogen Substituted Acetic Acids

Dibasic Organic Acids


10. Bond Strengths in Silicon, Phosphorus and Sulfur Compounds


dπ-pπ-Bonding in Simple Molecules

1. Silicon

2. Phosphorus

3. Sulfur

dπ-pπ-Bonding in Cyclic Systems

1. Cyclic Phosphazenes

2. Sulphanuric and Thiazyl Compounds


Author Index

Subject Index


No. of pages:
© Pergamon 1962
1st January 1962
eBook ISBN:

About the Author

C. T. Mortimer

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