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please tell me whether there are method validation in nmr
...
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I have performed a series of 1H 1D experiments with different concentration of peptide and accordingly different numbers...
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Dear all,
I would like to change the number of decimal place for the X and Y ppm values in nmrdraw (peak detection). The...
Posted:
Jerry J
1
Aug 18 '15 at 14:37
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Hi all, I want to calculate error in ppm from my Hsqc data. My spectrometer yields X1axis, Y1Axis, DX1, DY1, X1ppm, and ...
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Hi,
I have encountered a strange behaviour of some signals (they are absent) in a series of polycyclic aromatic carboxi...
| 1 |
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6k |
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views |
Hello,
I was wondering if there was a waterLOGSY sequence among the bruker sequences. If not, could someone tell me whe...
| 1 |
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5k |
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Hello all,
Just to mirror Craig Grimmer's question about labile protons in non-aqueous solvents, does anyone know of an...
| 1 |
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Hi,
Most people tend to use a lower d1 for 2D than for 1D. Help me understand why.
Furthermore, supposing you know you...
Updated:
gravatar
83
Mar 09 '15 at 02:21
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Hi As a newbie in the NMR world I hope you guys can help me out with a simple Q: I have 104 1D spectra I would like to t...
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21602 |
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Hi guys, I'm stuck in attempting this question and need some help understanding how to answer it.
Q.) The chemical shif...
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hello, I am trying to identify and quantify of metabolites present in semen with spectra obtained from 400 MHz NMR using...
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34717 |
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Hi All,
I've been trying to get a clear answer to this question for a while now, but can't seem to get a definitive ...
| 2 |
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votes |
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Can someone please help me solve an nmr problem? I've tried a lot but can't get it. Please post ur email and i'll send y...
| 2 |
0 |
3k |
| answers |
votes |
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I had a very weird situation where my compound shows double bond between carbons in NMR but shows it as single bond in x...
| 2 |
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6k |
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votes |
views |
Hey everyone,
I've started practicing reading NMR again after having not done so for years, and I'm getting caught up o...
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2k |
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Hi?
recently I try to use the bloch equation to simulate the magnetization M's variation, i used the perfect 90-degr...
Posted:
da hsu
1
Apr 18 '13 at 18:51
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Hi, my 1H 90 deg pulses are always longer when I work with my samples that are electrically conducting. Is this a/the re...
| 1 |
1 |
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| answers |
votes |
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Dear Everyone
I´d like to run 33S-NMR experiments using a Bruker NMR spectrometer at 400 MHz buy I nedd the pulse seque...
| 3 |
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6k |
| answers |
votes |
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I need to run NMR on samples of anhydrous ammonia. The boiling point of anhydrous ammonia is -33.34 deg C. In order to...
| 4 |
1 |
5k |
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votes |
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Hi guys, sorry to be really cheeky and sign up simply to ask for help, but here goes.
I've done a simple Grignard addit...
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1 |
8k |
| answers |
votes |
views |
Hello all,
I have spent approximately 4 hours trying to analyze an H NMR consisting of two doublets of doublets (pe...
| 6 |
3 |
20191 |
| answers |
votes |
views |
Why the chemical shift range of 1H nmr is ~20 ppm wheras for 13C nmr it is ~230 ppm?
...
| 2 |
0 |
7k |
| answers |
votes |
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Hello,
My 1H MAS NMR spectrum comes out with the right spinning side band pointing up and the left one pointing down. ...
| 1 |
1 |
7k |
| answers |
votes |
views |
I'm currently a college student taking Organic Chem and I've no idea how to figure out the J-coupling for H-NMR and neit...
| 4 |
1 |
25416 |
| answers |
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Hi everyone,
I was wondering whether anyone could help me to explain why the chemical shifts in my proton and carbon NM...
