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Modifications of FSLG HETCOR
margin of 1000), the HH condition will cover 75000 down to 45000 Hz RF field. This includes both HH sidebands n=±1.
4. Optimize the HH-condition varying sp0, and p14, phcor1 for maximum signal.
5. Run a variation of p15 between 20 and 5000 ms on your sample (or tyrosine *HCl). One
should see intensity variations (“dipolar oscillations”) which are normally smeared out by extensive Homo-nuclear dipolar couplings between protons.
6. Set up a 2D data set with the pulse program lgcphetfq. Fig.3 and fig.4 compare spectra taken with and without LG-offset during cp.
Figure 8.3. HETCOR on tyrosine *HCl without (left) and with LG contact (1msec contact)
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