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

Record type: Article

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.

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Citation

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), pp. 141-145. (doi:10.1016/j.jmr.2007.03.019).

More information

Published date: 2007
Keywords: nuclear-magnetic-resonance, para-hydrogen, field, parahydrogen-induced polarization, alignment, relaxation, long-lived spin states, singlet states, spectroscopy

Identifiers

Local EPrints ID: 54362
URI: http://eprints.soton.ac.uk/id/eprint/54362
PURE UUID: d58e8865-5969-46b2-9ece-71824e405bec
ORCID for G. Pileio: ORCID iD orcid.org/0000-0001-9223-3896

Catalogue record

Date deposited: 30 Jul 2008
Last modified: 17 Jul 2017 14:35

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Contributors

Author: G. Pileio ORCID iD
Author: M.H. Levitt

University divisions


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