High-resolution NMR in inhomogeneous magnetic fields

For high-resoln. 13C NMR spectroscopy under conditions of complete proton decoupling, gated decoupler and proton flip methods are described which demonstrate that heteronuclear J spectroscopy can provide fine structure information even in very inhomogeneous magnetic fields. The spectrum is broken down into sep. responses from individual C sites in the mol. and the magnetic field inhomogeneity is no longer a fundamental limitation on the resolving power since spin-echo refocusing methods are used to counteract the dispersal of signal components from different regions of the sample. The expt. extends the principle of J spectroscopy to the case of heteronuclear spin-spin coupling. The technique is illustrated by the proton-coupled natural abundance 13C spectrum of pyridine. [on SciFinder (R)]

Published in:
Journal of Magnetic Resonance, 24, 2, 291-4

 Record created 2006-02-22, last modified 2018-03-17

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