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

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Hi, I have encountered a strange behaviour of some signals (they are absent) in a series of polycyclic aromatic carboxi...
Posted: Arkadiusz Leniak 238 / Updated: zablociak 21 Mar 23 '15 at 12:11

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

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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 / Updated: sekhar Talluri 621 Feb 14 '15 at 23:21

peak missing in nh hsqc protein nmr

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Dear NMR wikiers I am assigning 95 aminoacid residue protein . I can see 76 cross peaks in N H HSQC on 700 vnmr cryob ...
Updated: sri 71 Aug 25 '11 at 00:05

How can I calculate a carbon-proton coupling constant for a molecule?

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I'm trying to explain a missing HMBC peak, and having a coupling constant less than 10 Hz would do that nicely. It's a f...
Posted: Toth 11 / Updated: sekhar Talluri 621 Mar 05 '11 at 09:58
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