Basic CP-MAS Experiments
User Manual Version 002 BRUKER BIOSPIN 107 (327)
Figure 7.2. Pulse Program for CPTOSS.
If the timing becomes a problem, alternative TOSS schemes need to be found
(see e.g. O.N. Antzutkin, Sideband manipulation in magic-angle-spinning nuclear
magnetic resonance; Progress in Nuclear Magnetic Resonance Spectroscopy 35
(1999) 203-266.). The SELTICS sequence is an alternative.
Set up the experiment using glycine or tyrosine-HCl at a moderate spinning
speed. Get a good CPMAS spectrum first then run a TOSS spectrum.
Table 7.2. Acquisition Parameters
Parameter Value Comments
pulprog cptoss
cptoss243
p2 180° pulse on X nucleus
pl11 Power level driving P2 on X-channel
cnst31 Spinning speed in Hz e.g. 5 kHz the entry would be 5000
zgoptns -Dtossb Tossb if needed because of high spinning speed or long p2