抄録
<jats:title>Abstract</jats:title><jats:p>Two‐dimensional (2D) NMR spectroscopy has become a routine part of molecular structure determination in liquids. In most modern experiments there is some correlation of transition frequencies between the two dimensions, and the mechanism responsible for the correlation dictates the information obtainable from the 2D spectrum. Two distinct mechanisms for magnetization transfer are considered: scalar coupling and cross‐relaxation. The former gives rise to information about the proximity of spins through the electronic framework of the molecule and the latter provides information on spatial proximity and molecular motion. Two‐dimensional experiments of both types are described, concentrating in particular on TOCSY and ROESY. It is shown how polarization transfer can be tailored and controlled, and how the unwanted coherent transfer due to <jats:italic>J</jats:italic> coupling can be eliminated in the ROESY experiment. Throughout the discussion, the multiple‐pulse sequence used for each experiment is the central focal point, and its design and analysis are the main considerations.</jats:p>
収録刊行物
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- Magnetic Resonance in Chemistry
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Magnetic Resonance in Chemistry 30 (13), 1992-12
Wiley