Unanswered questions

Measurement of very short T2

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Hello, I'm measuring T2 in paramagnetic materials. These values are very short (0.5-5 ms), and I have to use very short...
Posted: A K 1 Jan 18 at 00:26

how many percent peak in NH HSQC enough to solve structure?

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answers votes views
Hello everyone, I have a stupid question and often confuse me. We often meet peak missing in 15N H HSQC,but usually ho...
Posted: chengkun wang 1 Jan 14 at 18:29

Predicting aquisition time needed depending on sample concentration

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answers votes views
Hi , is there a way of predicting aquisition time needed depending on sample concentration in order to get a decent spe...
Posted: gravatar 59 / Updated: Manolis Matzapetakis 1 Jan 14 at 08:33

bigger MAS-NMR spectrum as irradiation window

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Hi, I have a sample with a very very big CSA which is broader than my irradiation windows, so I have to acquire my dat...
Posted: Thiazole 1 Dec 16 '14 at 13:05

J-value command

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Hi I have a 500MHz BRUKER NMR. How I can access to J-value at COSY experiment? what's that command? ...
Posted: Saeed 1 / Updated: PQdotL 1 Dec 16 '14 at 16:12

problem with large dosy files

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answers votes views
Hello, I run DOSY expt successfully but my dosy files are very massive and they take up large amounts of disk space. Ho...
Updated: elham 3 Jan 16 at 07:57

Topspin: usage of l0 and d0

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answers votes views
Dear all, In topspin, what's the initial value for l0, 0 or 1? what's the initial value for d0, 0 or in0? Thanks in ad...
Updated: Frey 61 Dec 12 '14 at 01:14

1H-15N CSP

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answers votes views
I have a basic question. Why or when should one use deviation from average chemical shift change rather than absolute va...
Posted: Mahavir Singh 1 Nov 27 '14 at 05:10

1H-15N HMBC of small molecules

1 0 154
answers votes views
When I used the automatic peak picking function of Topspin for picking the cross peaks in a 1H-15N HMBC spectrum, two cr...
Updated: Bhanu 1 Nov 27 '14 at 20:23

Running a wet sequence

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Hi, I am trying to run a wet sequence but I'm having trouble getting good results on a sample with 90:10 water:methanol...
Posted: gravatar 59 / Updated: Pete Gierth 366 Dec 05 '14 at 10:35
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