A Spectroscopic Overview of Intramolecular Hydrogen Bonds of NH…O,S,N Type

Publikation: Bidrag til tidsskriftReviewForskningpeer review

Abstract

Intramolecular NH…O,S,N interactions in non-tautomeric systems are reviewed in a broad range of compounds covering a variety of NH donors and hydrogen bond acceptors. 1H chemical shifts of NH donors are good tools to study intramolecular hydrogen bonding. However in some cases they have to be corrected for ring current effects. Deuterium isotope effects on 13C and 15N chemical shifts and primary isotope effects are usually used to judge the strength of hydrogen bonds. Primary isotope effects are investigated in a new range of magnitudes. Isotope ratios of NH stretching frequencies, νNH/ND, are revisited. Hydrogen bond energies are reviewed and two-bond deuterium isotope effects on 13C chemical shifts are investigated as a possible means of estimating hydrogen bond energies.
OriginalsprogEngelsk
Artikelnummer2409
TidsskriftMolecules
Vol/bind26
Udgave nummer9
ISSN1420-3049
DOI
StatusUdgivet - 21 apr. 2021

Emneord

  • intramolecular hydrogen bonding
  • isotope effects
  • hydrogen bond energy
  • NMR
  • NH chemical hifts
  • isototope ratios
  • Deuterium isotope effects on chemical shifts
  • Intramolecular hydrogen bonds
  • Hydrogen bond energies

Citer dette