Deuterium solid-state NMR study of pyridine dynamics in intercalated 2H-TaS2

P. L. McDaniel, Thomas Barbara, J. Jonas

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A quadrupole echo deuterium NMR line-shape study on polycrystalline samples of perdeuteriated pyridine and selectively deuteriated pyridine-d2 intercalated into 2H-TaS2 was performed between 280 and 393 K. Above 333 K, a slow growth in intensity of three motionally narrowed components coincident with depletion in intensity of the rigid pyridine pattern was observed for the perdeuteriated sample. Deuterium spin-lattice relaxation times were also recorded over the same temperature range. A short T1 component, which was attributed to the three motionally narrowed peaks, showed a sharp decrease in correspondence with their appearance in the line shapes. The narrowing motion was determined to be rapid rotational diffusion of the pyridine molecule about an axis perpendicular to the C2 symmetry axis and parallel to the molecular plane. Since theoretically determined motionally reduced quadrupole coupling constants support this interpretation, it was possible to determine the orientation of the pyridine in the van der Waals gap.

Original languageEnglish (US)
Pages (from-to)626-630
Number of pages5
JournalJournal of Physical Chemistry
Volume92
Issue number3
StatePublished - 1988
Externally publishedYes

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Deuterium
Pyridine
deuterium
pyridines
Nuclear magnetic resonance
solid state
nuclear magnetic resonance
line shape
quadrupoles
Spin-lattice relaxation
spin-lattice relaxation
Relaxation time
echoes
depletion
relaxation time
pyridine
Molecules
symmetry
molecules
Temperature

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Deuterium solid-state NMR study of pyridine dynamics in intercalated 2H-TaS2. / McDaniel, P. L.; Barbara, Thomas; Jonas, J.

In: Journal of Physical Chemistry, Vol. 92, No. 3, 1988, p. 626-630.

Research output: Contribution to journalArticle

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