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Truncated dipolar recoupling in solid-state nuclear magnetic resonance

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JournalChemical Physics Letters
DatePublished - 11 Dec 2006
Issue number4-6
Volume432
Number of pages7
Pages (from-to)572-578
Original languageEnglish

Abstract

We describe a solid-state NMR concept for the estimation of individual spin-spin couplings in strongly-coupled homonuclear spin systems. A radiofrequency pulse sequence, synchronised with the magic-angle sample rotation recouples zero-quantum dipolar interactions as well as a frequency-dispersing interaction such as the chemical shift anisotropy. The combination of these two recoupled interactions causes the spin system to behave in an approximately weakly-coupled fashion. Individual spin-spin couplings may then be disentangled by using frequency-selective radiofrequency pulses. Theoretical results and numerical simulations are compared with experimental data for the C-13 nuclei in [H-2(7), C-13(3),N-15]-L-alanine. (c) 2006 Elsevier B.V. All rights reserved.

    Research areas

  • ANGLE-SPINNING NMR, DISTANCE MEASUREMENTS, ROTATIONAL-RESONANCE, SYMMETRY PRINCIPLES, SPECTROSCOPY, PEPTIDES, SYSTEMS, SIMULATION, COUPLINGS, SEQUENCES

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