using DIPSI-2 |
PARAMETER SETRecord a conventional 1H spectrum. Note the o1 (or o1p) of the selected resonance. Record a SPFGE experiment on the selected 1H resonance to be selectively excited. Check for the proper values of p12 and sp2.
a selective gradient-enhanced 1D TOCSY spectrum with rpar SELMLGP all and change the pulse program to seldigpMODIFY SPECIFIC PARAMETERS
ACQUISITION
A minimum two-scan cycle is needed (ns=2 and ds=2).
PROCESSING
PLOT
OBSERVATIONS
OTHER RELATED VERSIONSThe best option is to use the shorter selective 180º pulse that achieve clean excitation of the selected resonance without disturb other resonances. In some cases, the use of long selective pulses can undergo sensitivity losses due to relaxation effects.
The selective ge-1D TOCSY experiment can also be recorded using a DPFGE scheme as a starting building block (see DPFGE experiment for more details).