Journal article
Relax with TEMPO: a paramagnetic relaxation agent useful also for silicon-29 NMR spectroscopy.



Publication Details
Authors:
Spirk, S.; Madl, T.; Pietschnig, R.
Publisher:
American Chemical SocietyDO - 10.1021/om701212j
Publication year:
2008
Journal:
Organometallics
Pages range:
500-502
Volume number:
27
Start page:
500
End page:
502
ISSN:
0276-7333

Abstract
TEMPO enhances longitudinal relaxation rates of silicon compds. significantly (e.g., enhancement by a factor of 150 for Si(OEt)4) while tolerating a wide range of reactive functionalities making it a favorable alternative to other relaxation enhancers for 29Si NMR spectroscopy. Linear plots of 1/T1 against the TEMPO concn. were obtained for TMS, 2,6-Mes2C6H3Si(OH)3, Si(OEt)4, SiCl4 and tBuSiCl3; the T1 values of 2-0.5 s were obtained at 10-20 mg of TEMPO per NMR sample. [on SciFinder(R)]


Keywords
NMR silicon relaxation time concn TEMPO radical, paramagnetic relaxation agent TEMPO free radical silicon NMR spectra, relaxation time longitudinal silicon NMR relaxation agent TEMPO radical


Authors/Editors

Last updated on 2019-25-07 at 16:02