Isotope effects on chemical shifts in the study of intramolecular hydrogen bonds

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Abstract

The paper deals with the use of isotope effects on chemical shifts in characterizing intramolecular hydrogen bonds. Both so-called resonance-assisted (RAHB) and non-RAHB systems are treated. The importance of RAHB will be discussed. Another very important issue is the borderline between “static” and tautomeric systems. Isotope effects on chemical shifts are particularly useful in such studies. All kinds of intramolecular hydrogen bonded systems will be treated, typical hydrogen bond donors: OH, NH, SH and NH+, typical acceptors C=O, C=N, C=S C=N−. The paper will be deal with both secondary and primary isotope effects on chemical shifts. These two types of isotope effects monitor the same hydrogen bond, but from different angles
OriginalsprogEngelsk
TidsskriftMolecules
Vol/bind 20
Udgave nummer2
Sider (fra-til)2405-2424
Antal sider20
ISSN1420-3049
DOI
StatusUdgivet - jan. 2015

Emneord

  • intramolecular hydrogen bonding
  • isotope effects
  • NMR

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