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My apologies in advance for the very "beginner" nature of my question : )
We are interested in examining a carbon spect...
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| answers |
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i want to ask how to analyze a pred. file generated as a result of running SPARTA+ shift prediction software .
...
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| answers |
votes |
views |
I have been trying to elucidate the 3D structure of oxidized glutathione (M.Wt= 612.63 g/mol) with the help of roesy dis...
Posted:
Raj
1
/ Updated:
marcs
11
Jan 20 '14 at 22:46
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10099 |
| answers |
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Does anyone know how to make Topspin to queue experiments? In my recently installed Topspin somehow the queue function i...
| 2 |
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| answers |
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Please, if somebody wants to help me?!
I need to get 1H spectrum with spin lock pulse on Bruker AV 600 instrument.
Which...
Updated:
gugica
1
Jan 17 '14 at 05:06
| 1 |
0 |
3k |
| answers |
votes |
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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...
| 1 |
0 |
3k |
| answers |
votes |
views |
Hi,
which aminoacid is best for calibrating acrylamide gel percentage for RDC?
...
| 3 |
0 |
4k |
| answers |
votes |
views |
I installed the Topspin 3.2 pl 3 on windows 7, but when I am trying to open my NMR data it can only show process data fi...
| 0 |
0 |
6k |
| answers |
votes |
views |
Looking for 1-2 yrs funding to complete my Ph.D. in Chemistry. Thesis: 'A Study of Conformational Analysis and Molecular...
| 1 |
0 |
5k |
| answers |
votes |
views |
Dear all,
My new avance 400 is driving me crazy at the moment ! Shims are awful although I tried the topshim 3D on sucro...
Updated:
univp5
1
Dec 20 '13 at 02:44
| 2 |
0 |
6k |
| answers |
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I recently read an article about executing a WET sequence for water suppression in urine samples. The 90°excitation puls...
| 1 |
0 |
4k |
| answers |
votes |
views |
In the decoupled HSQC of a polypetide I see two small peaks right and left to the delta arginine signal. These peaks hav...
| 0 |
0 |
1k |
| answers |
votes |
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Dear all!
I am struggling with some density matrices in PHIP experiments.
I understand why the density matrix before hyd...
| 0 |
0 |
1k |
| answers |
votes |
views |
One can roughly set the integral start and end by left clicking in the spectra. Is there a command which let you type in...
Posted:
de xiao
11
Nov 27 '13 at 07:58
| 2 |
0 |
5k |
| answers |
votes |
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I have some older 2D HSQC 1H-15N data that was run by a NMR tech. Is there a way I can tell what kind of solvent suppre...
| 2 |
0 |
8k |
| answers |
votes |
views |
Hello all,
I have used stretched polyacrylamide gels successfully many times to collect RDC data for proteins. The las...
Updated:
ChemMJW
99
Dec 06 '13 at 19:10
| 4 |
0 |
12593 |
| answers |
votes |
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hi All,
I run a 1H-15N HMBC experiment on a Bruker AVANCE III 600 MHz spectrometer. But I fail to get the long- range ...
| 1 |
0 |
3k |
| answers |
votes |
views |
Hi, I am new in NMR. Can someone please answer me why prefer N-NMR but not C and H -NMR?
Thanks
...
| 0 |
0 |
3k |
| answers |
votes |
views |
Hi,
I do not know how to convert a data set acquired using Spinsight into a format that can be read by Topspin. The d...
Posted:
mike
1
Nov 14 '13 at 14:00
| 1 |
0 |
4k |
| answers |
votes |
views |
Are there any problems with doing proton NMR of a compound containing iron?
...
Updated:
Debbie
1
Nov 15 '13 at 10:43
| 2 |
0 |
8k |
| answers |
votes |
views |
Hello All
Does anyone have any ideas on what might give a phosphorus signal at negative 74 ppm (cf phosphoric acid)? T...
Updated:
Craig
41
Nov 19 '13 at 05:11
| 1 |
0 |
8k |
| answers |
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I have prepared a sealed DMSO-d6 capillary tube (3mmOD) to use as an internal reference for an undergraduate prac using ...
| 5 |
0 |
4k |
| answers |
votes |
views |
Hi,
We have a Bruker MAS probe (4mm, late 90s vintage, widebore) that reports a spin speed twice what it is actually doi...
| 2 |
0 |
36051 |
| answers |
votes |
views |
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 ...
| 1 |
0 |
3k |
| answers |
votes |
views |
I known how to pick peaks automatically. But it always omits some small peaks and picks some noise as peaks. Is there an...
| 2 |
0 |
5k |
| answers |
votes |
views |
Hi!
I need to know how to reference nitrogen 15 from proton in a foldel hsqc experiment...I don't know how to calculate ...
| 2 |
0 |
5k |
| answers |
votes |
views |
how T1 and T2 relaxation time depend on nmr signal?
...
| 2 |
0 |
6k |
| answers |
votes |
views |
Hello,
I have a DOSY data set in TopSpin and I'd like to extract diffusion coefficients for two small peaks in the spec...
| 1 |
0 |
3k |
| answers |
votes |
views |
hello everyone
I have a problem in opening vnmr file into sparky.
i have converted vnmr file into ucsf, when this file ...
| 3 |
0 |
9k |
| answers |
votes |
views |
Is it possible to run a 13C spectra in which one carbon is coupled (with 1H) and remaining carbons are decoupled, using ...
| 2 |
0 |
6k |
| answers |
votes |
views |
Hi all,
I need to make a figure containing a 2D NMR spectrum for a paper. Has anyone figured out a good way to do this...
| 4 |
0 |
23132 |
| answers |
votes |
views |
We have got a donated AQR/p with Spectrospin 300 magnet and there is no helium inside. It was sitting in the warehouse f...
| 0 |
0 |
2k |
| answers |
votes |
views |
Hi !
I need a macro that can determine the standard deviation of the spectral noise for a many
similar 2D spectra.
I h...
| 2 |
0 |
11178 |
| answers |
votes |
views |
Hi,
I am trying to collect 1D NOESY spectrum of a small protein in 90% H2O with selective excitation so I could follow ...
| 2 |
0 |
6k |
| answers |
votes |
views |
I use a Bruker Avance 400 III, when using topshim command the following error appear: 'wait for event-acquisition runnin...
| 2 |
0 |
4k |
| answers |
votes |
views |
Hi all,
i'd like to hear some experiences you folks had on this theme.
I wanna by a program for that. Just googling for...
Posted:
fid
139
/ Updated:
ehaapani
1
Oct 07 '13 at 01:11
| 0 |
0 |
3k |
| answers |
votes |
views |
Hi,
I am using gaussian 09 to simulate proton NMR and I am comparing my results with the ones published here:
Atieh, Z...
Posted:
LFF
1
Aug 16 '13 at 04:09
| 2 |
0 |
6k |
| answers |
votes |
views |
Hi everyone,
Has someone tried to run proton decoupled of 14N? How long should be the 14N decoupling pulse? I had some ...
| 2 |
0 |
7k |
| answers |
votes |
views |
how do we decide on power levels and lengths of purge gradients in a new experiment?...As for coherence selection, relat...
Updated:
nmr2rmn
3
Aug 09 '13 at 14:58
| 1 |
0 |
4k |
| answers |
votes |
views |
I have run a 1H-103Rh HMQC on [Rh(acac)(cod)] and found the chemical shift of the 103Rh to be -7023 ppm. The frequency ...
| 2 |
0 |
4k |
| answers |
votes |
views |
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...
| 0 |
1 |
1k |
| answers |
votes |
views |
For spin ½ The echo trajectory M(t ) fits well to the function :
M (t) =M0 * EXP (-t/T) * COS (pi * j * t) (t: sp...
Updated:
ghNMR
11
Jul 26 '13 at 08:36
| 2 |
0 |
4k |
| answers |
votes |
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Hello All
Does anyone have any ideas on why the S/N would increase and then degrade during an HMBC-style experiment? I...
| 1 |
0 |
4k |
| answers |
votes |
views |
Hi all,
I have a 2D Bruker dataset that took a while to acquire, so I'd rather not simply repeat it. However, it seems...
| 1 |
0 |
13411 |
| answers |
votes |
views |
Dear Colleagues:
I've varian nmr 300, and i've a problem with the spinner that doesn't eject, it stucked like it is froz...
| 2 |
0 |
4k |
| answers |
votes |
views |
Hello all,
I am working with a varian spectrometer and did a 2D experiment with a 3D pulse sequence and I need help with...
Updated:
PBjang
1
Jul 17 '13 at 01:39
| 2 |
0 |
4k |
| answers |
votes |
views |
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 |
0 |
5k |
| answers |
votes |
views |
Hy everyone,
I'm having a strange problem when reading the NMR spectrum of a small aromatic molecule in deuterium oxide:...
Updated:
Ruggero
3
Jul 15 '13 at 03:22
| 0 |
1 |
2k |
| answers |
votes |
views |
Dear all,
Although my first question, remained unanswered, I still stay optimistic hoping this one will find its way t...
Posted:
Yar
13
Jul 02 '13 at 08:49
| 3 |
0 |
7k |
| answers |
votes |
views |
Hi, I am new here!
I am working on Bruker 600 MHz over 10 years, but now I have problem to get 35Cl NMR spectrum.
I use...
