Magnetization exchange, zero and double quantum spectra in stochastic NMR spectroscopy

Blümich, Bernhard; Kaiser, Reinhold

doi:10.1016/0022-2364(83)90328-1

Cited by 8 publications

(1 citation statement)

References 14 publications

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“…Bolton (21,22) has utilized heteronuclear zero quantum coherence as a conformational probe. Blümich and Kaiser have examined magnetization exchange in zero quantum spectra (23); Ruessink, De Kan ter, and MacLean (24) have used ZQC to determine 2H and 14N quadrupolar coupling constants by taking advantage of the abilities of the technique to produce high resolution spectra in the presence of inhomogeniety. Blumich (25) has more recently discussed the representation of zero quantum spectra, while Bolton (26) has considered the effects of flip angle filters on longitudinal magnetization arising during the creation of zero quantum coherence.…”

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confidence: 99%

Proton Zero Quantum Two-Dimensional Nmr Spectroscopy: An Alternative to Proton Double Quantum Inadequate for Mapping Complex Proton Spin Systems of Natural Products

Zektzer¹,

Martin²

1987

J. Nat. Prod.

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Despite numerous potential advantages, proton zero quantum coherence (HZQC) two-dimensional (2D)-nmr spectroscopy has been totally ignored by the natural products chemists engaged in structure elucidation. The HZQC experiment is described. Application of this highly sensitive 2D-nmr experiment to strychnine as a model system is presented. Comparisons are drawn between the HZQC and proton double quantum IN-ADEQUATE(HDQC) experiment. HZQC offers considerable advantages in time and resolution but does not appear to have the abilities of HDQC in elucidating coupling pathways where aJHH is very small.

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confidence: 99%

Proton Zero Quantum Two-Dimensional Nmr Spectroscopy: An Alternative to Proton Double Quantum Inadequate for Mapping Complex Proton Spin Systems of Natural Products

Zektzer¹,

Martin²

1987

J. Nat. Prod.

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Fortschritte in der 2D‐NMR‐Spektroskopie mit Rauschanregung

Armitage

Blümer

Genge

et al. 1987

Ber Bunsenges Phys Chem

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H. Armitage et al.: Fortschritte in der 2D-NMR-Spektroskopie mit Rauschanregung 1115 (ed.), "Modern spectral analysis", IEEE Press, New York Andernfalls wird das Integral ZR einer Referenzlinie zur Normierung benutzt:In Abb. 3 ist die exponentielle Anpassung fur beide Auswertungsmoglichkeiten dargestellt. Die bestimmten Geschwindigkeitskonstanten k unterscheiden sich von ihrem theoretischen Wert um weniger als 2% und die Korrelationswerte liegen uber 0.99. ZusammenfassungDiese Arbeit zeigt anhand umfangreicher Simulationsrechnungen, daB Maximum-Entropie-Methoden fur quantitative NMR-Untersuchungen geeignet sind.Jm behandelten Beispiel einer irreversiblen Reaktion erster Ordnung stimmt die ermittelte Geschwindigkeitskonstante gut mit der theoretischen uberein. Der Einsatz dieser Verfahren erscheint daher vielversprechend bei Untersuchungen komplexer Reaktionen, deren Zeitkonstanten in der GroDenordnung der NMR-Relaxationszeiten liegen und die deswegen der ublichen Fourieranalyse nicht zuganglich sind.

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S

Wendisch¹

1990

Acronyms and Abbreviations in Molecular Spectroscopy

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Magnetization exchange, zero and double quantum spectra in stochastic NMR spectroscopy

Cited by 8 publications

References 14 publications

Proton Zero Quantum Two-Dimensional Nmr Spectroscopy: An Alternative to Proton Double Quantum Inadequate for Mapping Complex Proton Spin Systems of Natural Products

Proton Zero Quantum Two-Dimensional Nmr Spectroscopy: An Alternative to Proton Double Quantum Inadequate for Mapping Complex Proton Spin Systems of Natural Products

Fortschritte in der 2D‐NMR‐Spektroskopie mit Rauschanregung

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