Selective J-resolved spectra: a double pulsed field gradient spin-echo approach.
A simple method to obtain selective J-resolved spectra is presented, which relies on the refocusing properties of double pulsed field gradient spin-echoes and provides unambiguous assignment of the measured coupling constants. The proposed examples show how this method is of general applicability, and requires no more than a simple optimization strategy to produce artifact-free spectra. Examples of application include the determination of a small, long-range coupling constant (0.7 Hz) in trans-retinal and Halpha couplings in a tripeptide.
Rastrelli
Federico
F
Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy. federico.rastrelli@unipd.it
Bagno
Alessandro
A
D001241:Aspirin / Q000737:chemistry; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular / Q000379:methods*; D012815:Signal Processing, Computer-Assisted; D013331:Strychnine / Q000737:chemistry; D014212:Tretinoin / Q000737:chemistry
D014212:Tretinoin; D013331:Strychnine; D001241:Aspirin