Reliable Two-Dimensional Rotating-Frame Cross-Relaxation Measurements in Coupled Spin Systems

A new and extremely useful variant of rotating-frame Overhauser effect spectroscopy, which is termed T-ROESY, is discussed. It has the distinct advantage of almost completely removing TOCSY cross peaks from the spectrum and can be implemented to deliver phase-sensitive two-dimensional spectra. The t...

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Bibliographic Details
Published in:Journal of magnetic resonance. Series B 1993-10, Vol.102 (2), p.155-165
Main Authors: Hwang, T.L., Shaka, A.J.
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Nuclear resonance and relaxation
Physics
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Description
Summary:A new and extremely useful variant of rotating-frame Overhauser effect spectroscopy, which is termed T-ROESY, is discussed. It has the distinct advantage of almost completely removing TOCSY cross peaks from the spectrum and can be implemented to deliver phase-sensitive two-dimensional spectra. The thinking that led to the T-ROESY sequences is described, focusing on a geometrical picture of how TOCSY occurs. Experimental results, presented for a hydrocarbon-like alkaloid containing many coupled protons within a narrow spectral bandwidth, agree with the simplified calculations.
ISSN:1064-1866
1096-0872
DOI:10.1006/jmrb.1993.1078