![]() |
CiteULike | ![]() |
andreasauerwein's CiteULike | ![]() |
![]() |
|
![]() |
Register | ![]() |
Log in | ![]() |
Obtaining Molecular and Structural Information from 13C–14N Systems with 13C FIREMAT Experimentsby: M. Strohmeier
|
Reviews
[Write a review of this article]
Find related articles from these CiteULike users
Find related articles with these CiteULike tags
Posting History
AbstractThe effect of dipolar coupling to 14 N on 13 C FIREMAT ( fi ve π re plicated m agic a ngle t urning) experiments is investigated. A method is developed for fitting the 13 C FIREMAT FID employing the full theory to extract the 13 C– 14 N dipolar and 13 C chemical shift tensor information. The analysis requires prior knowledge of the electric field gradient (EFG) tensor at the 14 N nucleus. In order to validate the method the analysis is done for the amino acids α-glycine, γ-glycine, l -alanine, l -asparagine, and l -histidine on FIREMAT FIDs recorded at 13 C frequencies of 50 and 100 MHz. The dipolar and chemical shift data obtained with this analysis are in very good agreement with the previous single-crystal 13 C NMR results and neutron diffraction data on α-glycine, l -alanine, and l -asparagine. The values for γ-glycine and l -histidine obtained with this new method are reported for the first time. The uncertainties in the EFG tensor on the resultant 13 C chemical shift and dipolar tensor values are assessed.
BibTeX record
RIS record