A new technique for differentiating between  2  J (C,H) and  3/4  J (C,H) connectivities | Zendy

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A new technique for differentiating between 2 J (C,H) and 3/4 J (C,H) connectivities

Author(s) -

Sprang Thomas,

Bigler Peter

Publication year - 2003

Publication title -

magnetic resonance in chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0749-1581

DOI - 10.1002/mrc.1154

Subject(s) - chemistry , spectrum (functional analysis) , spectral line , pulse sequence , analytical chemistry (journal) , sensitivity (control systems) , stereochemistry , nuclear magnetic resonance , physics , quantum mechanics , chromatography , electronic engineering , engineering

We present a new pulse sequence that yields two simultaneously detected types of long‐range correlation spectra. The one spectrum is to show all n J (C,H) connectivities and the other is to show exclusively 2 J (C,H) connectivities. The method is demonstrated by using strychnine as a test sample. A comparison with HMBC shows that the 2 J (C,H)/ n J (C,H) experiment supplies a n J (C,H) spectrum that is of equal standard with regard to sensitivity and spectral information. The additional 2 J (C,H) spectrum allows the disentanglement of 2 J (C,H) and n J (C,H) signals ( n > 2) in HMBC type spectra, which greatly simplifies signal assignment and structure elucidation in general. Copyright © 2003 John Wiley & Sons, Ltd.

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