Absence of some signals on 1H and 13C spectra of polyaromatic carboximidate

3 0 7k
answers votes views
Hi, I have encountered a strange behaviour of some signals (they are absent) in a series of polycyclic aromatic carboxi...
zablociak 21 Mar 23 '15 at 12:11

splitting QCPMG echo train

0 0 1k
answers votes views
Hi all, I'm running qcpmg (qcpmgaq), using bruker topspin3. Does anyone have a suggestion how to split the echos train? ...
shon roni 1 Mar 23 '15 at 04:07

WaterLOGSY pulse program for bruker

1 0 5k
answers votes views
Hello, I was wondering if there was a waterLOGSY sequence among the bruker sequences. If not, could someone tell me whe...
Arkadiusz Leniak 238 Mar 17 '15 at 08:09

How to calcualte eoors in ppm from Hz of Hsqc data?

1 0 3k
answers votes views
Hi all, I want to calculate error in ppm from my Hsqc data. My spectrometer yields X1axis, Y1Axis, DX1, DY1, X1ppm, and ...
Arkadiusz Leniak 238 Mar 17 '15 at 02:10

Why NMR can deliver angstrom reolution structures.

1 0 2k
answers votes views
How can NMR operating at radiofrequency wavelengths deliver angstrom resolution? For example X-ray crystallography opera...
Arkadiusz Leniak 238 Mar 17 '15 at 01:10

OH, NH, SH Labile protons in water nmr

1 0 4k
answers votes views
Hello all, Just to mirror Craig Grimmer's question about labile protons in non-aqueous solvents, does anyone know of an...
Arkadiusz Leniak 238 Mar 14 '15 at 11:24

reading Bruker phase data

1 0 3k
answers votes views
Hi all, I'm having trouble reading the 2dseq file for a scan I ran. It should contain 2 slices of 66x50 voxels, repeate...
Nicholas E 11 Mar 13 '15 at 10:53

log: Failed to find Z0 - low s/n

2 0 4k
answers votes views
Hi, everybody! I met a problem on Varian 400 MR: DMSO samples don't lock by "find Z0" button, but I can find lock signal...
Ulrich Haunz 210 Mar 09 '15 at 09:18

Mechanism of chemical exchange between labile protons (OH, NH, SH)

1 0 3k
answers votes views
Hello All Does anyone know of any good articles dealing with the mechanisms of labile proton exchange in non-aqueous so...
gravatar 83 Mar 09 '15 at 02:28

Choice of relaxation delay time (d1) in 2D experiments.

1 0 5k
answers votes views
Hi, Most people tend to use a lower d1 for 2D than for 1D. Help me understand why. Furthermore, supposing you know you...
gravatar 83 Mar 09 '15 at 02:21
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