## Abstract It is demonstrated using a practical example that indirect detection of ^29^Si NMR signals is sufficiently sensitive in LC–NMR stop‐flow arrangement to analyze mixtures of siloxane polymers. New cryogenic probes with better signal‐to‐noise ratio will turn this version of LC–NMR into a r
Applications of 29Si NMR Parameters
✍ Scribed by Bernd Wrackmeyer
- Publisher
- John Wiley and Sons
- Year
- 2007
- Weight
- 11 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0931-7597
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📜 SIMILAR VOLUMES
29Si NMR spectra of a series of tert-butyldimethylsilyl derivatives of simple alcohols were measured under standard conditions in chloroform-d. The chemical shifts are linearly related to those in analogous trimethylsilyl derivatives. The correlation is very good (r = 0.998, n = 24) but signiÐcantly
## Abstract ^29^Si NMR spectra of various methylphenyl‐substituted cyclotri‐ and ‐tetrasilazanes, composed of different combinations of the units __d__ = Me~2~SiNH, __d__^ph^ = MePhSiNH and __d__ = Ph~2~SiNH, have been investigated. For most of the compounds having more than one asymmetric centre,
29 Si NMR spectra of 29 Si-alkylsubstituted derivatives of 1,3,5-trisilacyclohexanes have been recorded and analyzed. A systematic preparation of alkyl derivatives with mixed substituents made it possible to evaluate substituentinduced chemical shift (SCS) values for the ring silicon atoms in α and