Multinuclear NMR spectroscopy in the gas phase

Nuclear magnetic resonance (NMR) of some nuclei (e.g. 1H, 13C, 19F, 29Si or 31P, I=1/2) gives strong signals which allow analytical studies of gaseous compounds. The other magnetic nuclei have low natural abundance or/and contain an electric quadrupole moment and their NMR signals are rather weak. I...

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Bibliographic Details
Published inJournal of molecular structure Vol. 786; no. 2; pp. 215 - 219
Main Author Jackowski, K.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 03.04.2006
Subjects
Gaseous matrices
Molecular interactions
NMR spectra
Nuclear magnetic shielding
Spin–spin coupling
Gaseous matrices
Nuclear magnetic shielding
NMR spectra
Molecular interactions
Spin–spin coupling
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Summary:Nuclear magnetic resonance (NMR) of some nuclei (e.g. 1H, 13C, 19F, 29Si or 31P, I=1/2) gives strong signals which allow analytical studies of gaseous compounds. The other magnetic nuclei have low natural abundance or/and contain an electric quadrupole moment and their NMR signals are rather weak. In our laboratory we have developed new experimental techniques, which permit us to monitor several micrograms of chemical compounds in gaseous matrices. Applying this approach we have observed magnetic shielding of various nuclei, including 17O and 33S at the natural abundance, in the gas phase as a function of density. Density-dependent spin–spin couplings were also found for many chemical compounds. It has been shown that NMR gas-phase studies can easily be extended on molecules, which exhibit strong intermolecular interactions and are liquids at room temperature. All the latter NMR experimental results obtained for gaseous matrices are reviewed in this paper.
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2005.10.018