Two-dimensional NMR spectroscopy in Earth's magnetic field.
نویسندگان
چکیده
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.
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عنوان ژورنال:
- Journal of magnetic resonance
دوره 182 2 شماره
صفحات -
تاریخ انتشار 2006