FSLG-HETCOR
User Manual Version 002 BRUKER BIOSPIN 123 (327)
In the figure above the frequency offsets for the FSLG part are shown as cnst22,
cnst23. They are different because cnst24 shifts the center frequency by 2000
Hz.
Table 8.1. Acquisition Parameters for FSLG-HETCOR (on tyrosine-HCl)
Parameter Value Comments
pulprog lghetfq FSLG program.
nuc1 13C
o1p 100 ppm
nuc2 1H
cnst20 70-100000 Proton spin nutation frequency with PL13.
cnst24 0 - -2000 Place carrier off during evolution.
pl1 Power level channel 1 for contact pulse.
pl12 Power level channel 2 TPPM/SPINAL decoupling.
pl13 Power level channel 2 FSLG decoupling.
sp0 Power level channel 2 for contact pulse.
spnam0 ramp.100 or simil. Shape for contact pulse channel f2.
p3 2.5 – 3 µsec 90º pulse channel 2 at pl12.
p15 50 -500 µsec Contact pulse width.
pcpd2 ≈ 2*p3-0.2 SPINAL64 /TPPM decoupling pulse.
cpdprg2 SPINAL64/TPPM15 Decoupling sequence.
F1 1H indirect
l0 0 Start value 0, incremented during expt.
l3 2- 4 Multiples of FSLG-periods, increment per row.
in_f1 =in0 as calculated Set according to value calculated by ased.
F2 13C acquisition
d1 2s Recycle delay.
sw 310ppm Sweep width direct dimension.
aq 16-20 msec
masr 10000-15000 Hz At 100 kHz RF, 15 kHz is ok.
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