Thanks to all the replies on HSQC instead of 13C. I should have said that we
use NUS by default and for some reason, I forgot about the quaternary carbons
issue, Doh.
My hunch about the poor response of porphyrins is that they pi-stack in solution.
Thus even if the solubility is good, the stacking affects mobility and therefore
relaxation times?
Regards
Rob
Dr Rob Lewis PhD BSc MRSC
Chemistry
University of Hull
Cottingham Road,
Hull
HU6 7RX
UK
T. +44(0)1482 466649
Email: R.A.Lewis_at_hull.ac.uk
Received on Wed Mar 09 2022 - 14:03:45 MST