Two-dimensional NMR spectroscopy in Earth’s magnetic field
Abstract
We demonstrate the first two-dimensional correlation NMR (COSY) spectra obtained at ultra low frequencies (ULF) using the Earth's magnetic field. Using a specially developed spectrometer with multiple audio-frequency pulses under controlled pulse phase, we observe magnetisation transfer arising from heteronuclear J-couplings in trifluoroethanol and para-difluorobenzene. The 2D COSY spectra exhibit all diagonal and off-diagonal multiplets consistent with known J-couplings in these molecules.
- Publication:
-
Journal of Magnetic Resonance
- Pub Date:
- October 2006
- DOI:
- Bibcode:
- 2006JMagR.182..343R
