Multiple receiver experiments for NMR spectroscopy of organosilicon compounds

作者：Kupce Eriks^*; Wrackmeyer Bernd

来源：Applied Organometallic Chemistry, 2010, 24(12): 837-841.

DOI：10.1002/aoc.1692

• silicone oil
• silatrane
• NMR
• multiple receiver

A new pulse sequence, 2D INEPT-PANACEA, that allows parallel acquisition of 2D Si-29-Si-29 INADEQUATE and 2D Si-29-H-1 HMBC spectra and also provides the 1D Si-29 NMR spectrum has been designed for use with organosilicon compounds and tested using a mixture of OH-terminated polydimethylsiloxanes. The spectra provide Si-29-O-Si-29 connectivities and multiple bond Si-29-H-1 correlation spectra in a single measurement that can be recorded in as little time as 8 min. In addition, the 1D Si-29 NMR spectrum provides accurate measurement of Si-29 chemical shifts with a signal-to-noise ratio allowing for determination of Si-29-C-13 spin-spin coupling constants, and also serves as a frequency lock. The latter feature allows for recording of NMR spectra of neat liquid samples or of samples without a deuterated solvent. The second example of using multiple receivers involves PANSY-COSY and PANSY-TOCSY experiments, using silatrane glycol as a test sample.

• 出版日期2010-12