《Chapter 18-Gas-Phase Ion Chemistry of Silicon-Containing Molecules (p 1105-1142)》.pdf

The Chemistry of Organic Silicon Compounds. Volume 2 Edited by Zvi Rappoport and Yitzhak Apeloig Copyright 1998 John Wiley Sons, Ltd. ISBN: 0-471-96757-2 CHAPTER 18 Gas-phase ion chemistry of silicon- containing molecules† NORMAN GOLDBERG‡ and HELMUT SCHWARZ ¨ Institut fur Organische Chemie der Technischen Universitat Berlin, Straße des 17. ¨ Juni 135, D-10623 Berlin, Germany I. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1106 II. THERMOCHEMISTRY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1106 A. Cationic Silicon Hydrides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1106 B. Substituted Silicenium Ions . . . . . . . . . . . . . . . . . . . . . . . . . . . 1108 C. Anionic Silicon Species . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1109 III. ION MOLECULE REACTIONS OF SILICON-CONTAINING MOLECULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1109 A. Reactions of Transition-metal Ions with Silicon-containing Molecules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1110 B. Use of Silicon Compounds as Precursors for the Generation of Elusive Carbanions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1115 C. Reactions of Atomic Silicon Cations with Neutral Molecules . . . . . 1117 D. Reactions of Silicon-containing Ions with Neutral Molecules . . . . . . 1118 IV. GENERATION AND CHARACTERIZATION OF SMALL MULTIPLY BONDED