Hi memebers,
I think it was in March that I requested information on proton and C13
experiments for paramagnetic cmpds. Well after a lot of delays I
finally got around to trying out the suggestions. Thank you to all who
gave me suggestions.
I used a BRUKER AVANCE 500 DRX (500MHz) spectrometer, the software was
XWIN-NMR ver. 3.0.
Proton experiment:
Parameter set (rpar) - proton
Pulse program - zg0
Carbon experiment:
Parameter set - C13CPD
Pulse program - zg0dc
In general the following parameters were altered:
D1 - DECREASE
SW - INCREASE (50 - 110ppm for H-1 & >500ppm for C13)
TD - DECREASE
SI - DECREASE
NS - INCREASE (1024 for H-1 & 2048 for C13)
DW - DECREASE
LB - INCREASE (5-10Hz)
The samples contained either Copper, cobalt or Nickel. We got good
looking peaks especially for the proton. The Carbon spectra were hard
to phase, the baselines were curved. The molecular weight used so far
is 400 - 800 g/mol. Solvent - DMSO and D2O.
Is there an explanation for this?
The parameters were dealt with in a book called:
150 and more Basic Nmr Experiments - Experiments: 8.13.
I acessed the book from the Bruker website:
Tech support -> Applications -> book .
They only give the parameters though.
What we now have to do is try to interpret the data.
I hope I have been clear. Some compound did not give us any information
though. Thanks again to those who responded.
Regards,
Toni Johnson
Senior Scientific Officer
NMR LABORATORY
UNIVERSITY OF THE WEST INDIES
MONA, KINGSTON 7
JAMAICA
Received on Tue Dec 07 2004 - 18:58:26 MST