Abstract
We demonstrate that heteronuclear decoupling using a Phase- Inverted Supercycled Sequence for Attenuation of Rotary Res Onance (PISSARRO) is very efficient at high spinning frequencies ( ν rot = 60 kHz) and high magnetic fields (900 MHz for protons at 21 T) even with moderate radio-frequency decoupling amplitudes ( ν 1 I = 15 kHz), despite the wide range of isotropic chemical shifts of the protons and the increased effect of their chemical shift anisotropy.
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