β Scribed by Marino Vega-Vazquez; Juan Carlos Cobas; Manuel Martin-Pastor
No coin nor oath required. For personal study only.
A parallel localized spectroscopy (PALSY) method is presented to speed up the acquisition of multidimensional NMR (nD) spectra. The sample is virtually divided into a discrete number of nonoverlapping slices that relax independently during consecutive scans of the experiment, affording a substantial reduction in the interscan relaxation delay and the total experiment time. PALSY was tested for the acquisition of three experiments 2D COSY, 2D DQFβCOSY and 2D TQFβCOSY in parallel, affording a timeβsaving factor of 3β4. Some unique advantages are that the achievable resolution in any dimension is not compromised in any way: it uses conventional NMR data processing, it is not prone to generate spectral artifacts, and once calibrated, it can be used routinely with these and other combinations of NMR spectra. Copyright Β© 2010 John Wiley & Sons, Ltd.
π SIMILAR VOLUMES
This work was supported by National Science Foundation Grant CHE8921144. We thank Professor J. R. Norris and Dr. J. Tang for providing LPZOOM software and Dr. S. J. Gibbs for help with programming and instrumentation.
An inexpensive external unit that allows the use of a commercial high-resolution NMR spectrometer as a very low frequency instrument is described. The external unit is phase coherent, the pulse timing being given by the parent spectrometer. With the exception of the probe, the external unit does not