A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Proton double quantum coherence and cross-relaxation in (NH4)(2)SnBr6
Tekijät: Punkkinen M, Kaikkonen A, Ylinen EE, Kankaanpaa M, Vuorimaki AH
Kustantaja: ELSEVIER SCIENCE BV
Julkaisuvuosi: 1998
Lehti:: Solid State Nuclear Magnetic Resonance
Tietokannassa oleva lehden nimi: SOLID STATE NUCLEAR MAGNETIC RESONANCE
Lehden akronyymi: SOLID STATE NUCL MAG
Vuosikerta: 13
Numero: 3
Aloitussivu: 167
Lopetussivu: 173
Sivujen määrä: 7
ISSN: 0926-2040
DOI: https://doi.org/10.1016/S0926-2040(98)00083-6
Tiivistelmä
A proton double quantum coherence signal can be observed exclusively from the T species NH4 groups (with the total spin I = 1 in ammonium compounds at low temperatures by the three-pulse sequence 90 degrees(x) - t(pr) - 90 degrees(x) - t(ev) - 90 degrees(x) - t(a),where t(pr) and t(a) are of the magnitude of the inverse line width and t(ev) very short. The usefulness of this pulse sequence, preceded by the additional pulse sequence 90 degrees(x) - t(1) - 90 degrees(-x) - t(2) for creating an unbalance between the A and T species magnetizations, by applying it to cross-relaxation studies in (NH4)(2)SnBr6. (C) 1998 Elsevier Science B.V. All rights reserved.
A proton double quantum coherence signal can be observed exclusively from the T species NH4 groups (with the total spin I = 1 in ammonium compounds at low temperatures by the three-pulse sequence 90 degrees(x) - t(pr) - 90 degrees(x) - t(ev) - 90 degrees(x) - t(a),where t(pr) and t(a) are of the magnitude of the inverse line width and t(ev) very short. The usefulness of this pulse sequence, preceded by the additional pulse sequence 90 degrees(x) - t(1) - 90 degrees(-x) - t(2) for creating an unbalance between the A and T species magnetizations, by applying it to cross-relaxation studies in (NH4)(2)SnBr6. (C) 1998 Elsevier Science B.V. All rights reserved.
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