Many thanks to Sameer at U Guelph for sending me the 2011 J Biomol NMR publication regarding gradients during inepts. (51:199-207)!
Going back to the the few data sets I have recorded, the hsqcrexetf3gpsi3d and hsqct2etf3gpsi3d do have gradients during the inept periods, and the hsqct1etf3gpsi3d and hsqcnoef3gpsi do not... and corresponding spectra either phase nicely or do not. I should have been looking at the pulse sequences more closely, very glad to have colleagues that nicely point me in the right direction.
Tara
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Dr. Tara Sprules
QANUC
Quebec/Eastern Canada High Field NMR Facility
www.nmrlab.mcgill.ca
phone: (514) 398-1721
fax: (514) 398-8254
3420 University St., Rm 023
McGill University
Montreal, QC, H3A 2A7
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________________________________
From: Tara Sprules, Dr. <tara.sprules_at_mcgill.ca>
Sent: Sunday, June 21, 2020 1:42 PM
To: ammrl_at_ammrl.org <ammrl_at_ammrl.org>
Subject: AMMRL: phasing issue with relaxation data
Hi,
I've found that with some of the 15N relaxation pulse sequences, I have uneven phase correction across the spectrum. A regular HSQC phases just fine, but the spectra from a T! experiment, does not. (hsqct1etf3gpsi3d) I've used a d1 of 4s for the t1 experiment.
Any suggestions would be greatly appreciated.
Tara
*********************************************
Dr. Tara Sprules
QANUC
Quebec/Eastern Canada High Field NMR Facility
www.nmrlab.mcgill.ca
phone: (514) 398-1721
fax: (514) 398-8254
3420 University St., Rm 023
McGill University
Montreal, QC, H3A 2A7
*********************************************
Received on Sun Jun 21 2020 - 14:29:49 MST