hardware requirment
X-QNP switchbox
BBFO probe
filter ( 1H(19F) )
Without the filter in Preamplify, the 1H signal will be suppressed by the F-19 decoupling channel.
software requirment
rpar PROF19DEC ( pulse program: zghfigqn ), PCPD2=110-BF1/20 (F2 channel-90 degree pulse for decoupling sequence), and PLW2=power level of 19F 90 degree pulse, PLW12 (F2 channel-power level for CPD/BB decoupling)
corrected setting of edasp
example
the experiment is list:
There is triple splitter pattern at 7.15 ppm in 1H oberved without 19F decoupled, but this peak will change to double splitter pattern when was exposed to 19F CPD.
Another example of more 19F complex componment:
