14N NMR single-crystal study of hexamethylenetetramine

Kye Young-Sik, Gerard S. Harbison

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The 14N NMR spectrum of hexamethylenetetramine (HMT) is dominated by the very large electric quadrupole coupling constant of 4.412 MHz at room temperature. Nonetheless, by carefully accounting for this interaction one can subtract its first-and second-order effects on the spectrum, leaving the much smaller anisotropic chemical shift interaction. The chemical shielding anisotropy of HMT is -8.3 ± 3.2 ppm, small but different from zero, with an isotropic chemical shift in good agreement with the value in aqueous solution. This study illustrates how even very tiny chemical shift tensors can be extracted from the NMR spectra of quadrupolar nuclei using appropriate techniques.

Original languageEnglish (US)
Pages (from-to)299-302
Number of pages4
JournalMagnetic Resonance in Chemistry
Volume37
Issue number4
StatePublished - Apr 1 1999

Fingerprint

Methenamine
hexamethylenetetramine
Chemical shift
chemical equilibrium
Nuclear magnetic resonance
Single crystals
nuclear magnetic resonance
single crystals
Shielding
Tensors
shielding
Anisotropy
quadrupoles
interactions
tensors
aqueous solutions
anisotropy
nuclei
room temperature
Temperature

Keywords

  • Hexamethylenetetramine
  • N NMR
  • NMR

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

Cite this

14N NMR single-crystal study of hexamethylenetetramine. / Young-Sik, Kye; Harbison, Gerard S.

In: Magnetic Resonance in Chemistry, Vol. 37, No. 4, 01.04.1999, p. 299-302.

Research output: Contribution to journalArticle

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