Boron Chemistry - 4 (eBook)

Front Cover 1
Boron Chemistry — 4 4
Copyright Page 5
Table of Contents 6
Organizing Committee 7
PREFACE 8
ACKNOWLEDGEMENTS 9
CHAPTER 1. 
10 
Abstract 10
INTRODUCTION 10
ORBITAL CONTROL AND SYMMETRY CROSSING 10
CLASSICAL INTERMEDIATES 11
VACANCY STRUCTURES AND EXPANSION 13
LOCALIZED BONDS 14
HYDROBORATION 16
ELECTRON DENSITIES FROM X-RAY DIFFRACTION 16
Acknowledgement 17
REFERENCES 18
CHAPTER 2. 
20 
Abstract 20
INTRODUCTION 20
DISCUSSION 22
CONCLUSIONS 30
Acknowledgements 30
REFERENCES 30
CHAPTER 3. 
32 
Abstract 32
REFERENCES 40
CHAPTER 4. 
42 
Abstract 42
INTRODUCTION 42
RESULTS AND DISCUSSION 42
REFERENCES 48
CHAPTER 5. B-METALLATED DICARBA-closo- DODEGABORANES(12) 50
ABSTRACT 50
INTRODUCTION. 50
RESULTS AND DISCUSSION 50
REFERENCES 56
CHAPTER 6. 
58 
References. 79
CHAPTER 7. 
82 
Abstract 82
INTRODUCTION 82
ISOMERIZATION OF B5H9 DERIVATIVES 83
REACTIONS OF THE B5H8 ANION 84
TRANSITION METAL COMPLEXES 85
BERYLLIUM-PENTABORANE CHEMISTRY 86
Acknowledgement 87
REFERENCES 87
CHAPTER 8. 
90 
Abstract 90
INTRODUCTION 90
SYNTHESES OF CYCLIC DIBORAETHENES 91
REACTIONS OF THE DIBORAETHENE HETEROCYCLES 92
Acknowledqement 102
REFERENCES 102
CHAPTER 9. 
104 
Abstract 104
INTRODUCTION 104
MONOFERRABORANES 106
DIFERRABORANES 113
CONCLUSIONS 115
REFERENCES 115
CHAPTER 10. 
118 
Abstract 118
REACTIONS OF BORON HETEROCYCLES 118
SILYLBORANES 124
TRIBORYLAMINES 126
REFERENCES 127
CHAPTER 11. SYNTHESIS AND BIOLOGICAL ACTIVITY OF BORON ANALOGUES OF THE a-AMINO ACIDS AND RELATED COMPOUNDS 128
ABSTRACT 128
INTRODUCTION 128
APPROACHES TO THE SYNTHESIS OF BORON ANALOGUES OF THE a-AMINO ACIDS 129
SYNTHESIS OF AMINE-CYANOBORANES 131
SYNTHESIS OF AMINE-CARBOXYBORANES 132
STUDIES OF BIOLOGICAL ACTIVITY 133
BORON ANALOGUE OF GLYCINE AND N-METHYL DERIVATIVES 134
CONCLUSION 137
Acknowledgement 137
REFERENCES 137
CHAPTER 12. 
CONSERVATION OF CHEMICAL SHIFT 140
Abstract 140
INTRODUCTION 140
DISCUSSION 143
CONCLUSIONS 154
Acknowledgment 155
APPENDIX I. The conservation of chemical shift 155
APPENDIX II.The ethyl cation C2H5+ 157
REFERENCES 158
CHAPTER 13. 
160 
CHAPTER 14. 
162 
Abstract 162
INORGANIC CHEMISTRY FIFTY YEARS AGO 162
THE GREAT PIONEER,STOCK 163
TECHNICAL DIFFICULTIES 164
THE "GOOD ENOUGH" ATTITUDE 164
THE SCHLESINGER-BURG COLLABORATION, AND LONG-RANGE CONSEQUENCES 165
SOME THOUGHTS ABOUT THE FUTURE 168
THE PROCESSES OF DISCOVERY 169
REFERENCES AND NOTES 170