A Hybrid Of H2BC And HMBC Overcoming Shortcomings Of Both

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HAT HMBC: A hybrid of H2BC and HMBC overcoming shortcomings of both

• Benie, Andrew J.
;
• Sørensen, Ole W.

Abstract

A new 2D NMR experiment, HAT HMBC, that is a hybrid of H2BC and HMBC aims at establishing two-bond correlations absent in H2BC spectra because of vanishing 3JHH coupling constants. The basic idea is to create an additional π phase difference in the multiplet structure in HMBC peaks with respect to the n+1 JHH coupling constant between the proton(s) attached to a 13C and a 1H separated by n bonds. Thus HMBC peaks associated with small JHH will be the most attenuated in a HAT HMBC spectrum in comparison to a regular HMBC spectrum, i.e. peaks associated with n+1 JHH and nJCH will for n > 2 usually be strongly attenuated. The HAT HMBC pulse sequences contain the same number of pulses as regular HMBC and are only a few milliseconds longer.

Publication: Journal of Magnetic Resonance Pub Date: February 2007 DOI:

10.1016/j.jmr.2006.05.003

Bibcode: 2007JMagR.184..315B full text sources Elsevier |

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