J-Stabilization of singlet states in the solution NMR of multiple-spin systems

Pileio, G. and Levitt, M.H. (2007) J-Stabilization of singlet states in the solution NMR of multiple-spin systems. Journal of Magnetic Resonance, 187, (1), 141-145. (doi:10.1016/j.jmr.2007.03.019).


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Long-lived singlet states have been observed in the solution NMR of spin systems containing more than two coupled spins, despite the fact that the singlet state is expected to be quenched by small long-range J-couplings. We show that the stability of localized singlet states may be explained by taking into account the intra-pair J-coupling between the two spins which participate in the singlet state. The relatively strong intra-pair J-coupling protects the singlet state against quenching by weaker out-of-pair J-couplings.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/j.jmr.2007.03.019
ISSNs: 1090-7807 (print)
Related URLs:
Keywords: nuclear-magnetic-resonance, para-hydrogen, field, parahydrogen-induced polarization, alignment,relaxation, long-lived spin states, singlet states, spectroscopy
Subjects: Q Science
Q Science > QD Chemistry
Divisions : University Structure - Pre August 2011 > School of Chemistry
ePrint ID: 54362
Accepted Date and Publication Date:
Date Deposited: 30 Jul 2008
Last Modified: 31 Mar 2016 12:33
URI: http://eprints.soton.ac.uk/id/eprint/54362

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