## Abstract Absolute values of (79) geminal ^2^__J__(^29^Si‐O‐^29^Si) couplings were measured in an extensive series of (55) unstrained siloxanes dissolved in chloroform‐__d__. Signs of ^2^__J__(^29^Si‐O‐^29^Si) in some (9) silicon hydrides were determined relative to ^1^__J__(^29^Si‐^1^H) which ar
2J(29SiO29Si) coupling constants in oligosiloxanes
✍ Scribed by Milan Kurfürst; Jan Schraml
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 113 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.2021
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✦ Synopsis
Abstract
The absolute values of spin–spin couplings between ^29^Si nuclei in siloxanes, ^2^J(^29^SiO^29^Si), were determined. The couplings are small and cover a narrow range of values (0–5 Hz). The coupling constants depend on the branching or on the number of electronegative substituents on the SiOSi moiety. Copyright © 2007 John Wiley & Sons, Ltd.
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