Yes, this is as naive as it sounds: what are typical linewidths in carbon
spectra?
Coming from the biophysical side I've always used protons and indirect
detection. But to accommodate chemists who use my Varian 500 I've dusted
off an old broadband probe. After exhaustive shimming I could only get 8
Hz proton and 2.5 Hz carbon linewidths. After sleeping on it, I'm thinking
the proton widths may be OK because its only a decoupling coil - 20 mm high
and wrapped with 1 cm wide ribbon on the outside of the dewar.
Is 2.5 Hz reasonable for 13C?
How fast would one expect to see carbon peaks from a natural abundance, 30
mm sample?
-- Roger Kautz
Received on Wed Nov 08 2000 - 10:57:44 MST