Contents III/35 Nuclear Magnetic Resonance Data F:  Chemical Shifts and Coupling Constants for Silicon-29 1 General Introduction (R.R. GUPTA, M.D. LECHNER, H.C. MARSMANN, 
 B.M. MIKHOVA, F. UHLIG)................................................................................................... 1 
1.1 	Magnetic Properties of Nuclei ............................................................................................. 1 

1.2 	Spinning Nuclei in Magnetic Fields..................................................................................... 2 

1.3 	Theory of Nuclear Resonance .............................................................................................. 3 

1.4 	Chemical Shift ..................................................................................................................... 5 

1.5 	Coupling Constant ............................................................................................................... 6 

1.6 Introduction into 29Si-NMR Spectroscopy........................................................................... 6 

1.7 	References for 1 ................................................................................................................... 8 

2 	Detection of 29Si NMR Signals (H.C. MARSMANN, F. UHLIG)........................................... 9 
2.1 	General Considerations........................................................................................................ 9 

2.2 	Pulse Sequences................................................................................................................... 9 

2.3 	Referencing.......................................................................................................................... 10 

2.4 	References for 2 ................................................................................................................... 11 

3 Chemical Shift (H.C. MARSMANN, F. UHLIG) ..................................................................... 12 
3.1 	Theory and General Remarks .............................................................................................. 12 

3.1.1 	General Considerations........................................................................................................ 12 

3.1.2 	Empirical Descriptions of 29Si Chemical Shifts. .................................................................. 12 

3.1.3 	Semi- and Non-Empirical Treatments of 29Si Chemical Shifts ............................................ 15 

3.1.4 	Special Effects in 29Si NMR ................................................................................................ 19 

3.1.4.1 	Influence of Ring Strain....................................................................................................... 19 

3.1.4.2 	Higher Coordination Numbers............................................................................................. 19 

3.1.4.3 	Solvent Effects..................................................................................................................... 20 

3.2 	Chemical Shifts of Relevant Classes in Silicon Chemistry .................................................. 21 

3.2.1 	Silicon with the Coordination Number Four........................................................................ 21 

3.2.1.1 	Organosilanes ...................................................................................................................... 21 

3.2.1.2 	Oxygen-Containing Silicon Compounds .............................................................................. 22 

3.2.1.2.1 	Siloxanes.............................................................................................................................. 22 

3.2.1.2.2 	Trimethylsiloxy derivatives ................................................................................................. 22 

3.2.1.2.3 	Silicones, Silsesquioxanes ................................................................................................... 24 

3.2.1.2.4 	Aqueous Silicates................................................................................................................. 24 

3.2.1.2.5 	Silicate Solids, Alumosilicates............................................................................................. 25 

3.2.1.2.6 	Silicate Glasses and Gels ..................................................................................................... 25 

3.2.1.3 	Oligo- and Polysilanes......................................................................................................... 26 

3.2.1.3.1 	Empirical Observations on Linear and Branched Oligosilanes............................................ 26 

3.2.1.3.2 	Cyclic Oligosilanes .............................................................................................................. 28 

3.2.1.4 	Silicon-Nitrogen-Compounds .............................................................................................. 32 

3.2.1.5Silicon Bonded to Metals Main Group Derivatives, Classical and Non Classical  Complexes ........................................................................................................................... 34 
3.2.2 	Silicon with Low Coordination Numbers ............................................................................ 35 

3.2.2.1 	Disilenes .............................................................................................................................. 35 

3.2.2.2 	Silenes.................................................................................................................................. 37 

3.2.2.2.1 	Carbosilenes ......................................................................................................................... 37 

3.2.2.2.2 	Other Group 14 Silenes ....................................................................................................... 38 

 Contents IX 
3.2.2.2.3 Phosphasilenes ................................................................................................................... 40 

3.2.2.2.4 Shift Range of Silenes........................................................................................................ 40 

3.2.3 Silicon with High Coordination Numbers .......................................................................... 41 

3.3 References for 3 ................................................................................................................. 43 

4 29Si NMR Data of Selected Compounds (H.C. MARSMANN, F. UHLIG).......................... 47 
4.1 Disilenes and Silenes ......................................................................................................... 47 

4.2 Silicon with Coordination Number 4 ................................................................................. 51 

4.2.1 Trimethylsilyl-Substituted Derivatives ..............................................................................   51 

4.2.2 Dimethylsilyl-Substituted Derivatives ............................................................................... 132

4.2.3 Halogen-Substituted Silicon Derivatives ........................................................................... 214 

4.2.4 Dihalogene-Substituted Silicon Derivatives ...................................................................... 266 

4.2.5 Trihalogene-Substituted Silicon Derivatives ..................................................................... 293 

4.2.6 Siloxanes............................................................................................................................ 320 

4.2.7 Diphenylsilanes.................................................................................................................. 349 

4.2.8 Triarylsilanes ..................................................................................................................... 418 

4.2.9 Selected Transition Metal Silicon Derivatives ................................................................... 429 

4.3 References for 4 ................................................................................................................. 448 

