[Question from NMRWiki Q&A forum] Odd 1D-ROESY Result
Odd 1D-ROESY Result
Hello,
I've been trying to assign peaks in a proton spectrum of a highly dynamic ring, namely 2-deutero-diselenane. The structure is like 1,3-dioxane but with two seleniums instead:http://en.wikipedia.org/wiki/1,3-Dioxane
The experiment is at low temperature where exchange is slow on the chemical shift timescale but probably fast on the relaxation timescale. What I can't figure out is that when I irradiate the H2 signals in a 1D-ROESY, I see the following peaks:-Negative irradiated H2.-Negative peak for non-irradiated H2, due to exchange due to...
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08-08-2011 02:02 AM
[Question from NMRWiki Q&A forum] Odd 1D-ROESY Result
Odd 1D-ROESY Result
Hello,
I've been trying to assign peaks in a proton spectrum of a highly dynamic ring, namely 2-deutero-diselenane. The structure is like 1,3-dioxane but with two seleniums instead:http://en.wikipedia.org/wiki/1,3-Dioxane
The experiment is at low temperature where exchange is slow on the chemical shift timescale but probably fast on the relaxation timescale. What I can't figure out is that when I irradiate the H2 signals in a 1D-ROESY, I see the following peaks:-Negative irradiated H2.-Negative peak for non-irradiated H2, due to exchange due to...
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