Intramolecular Hydrogen Atom Transfer in Aminyl Radical at Room Temperature with Large Kinetic Isotope Effect

Ying Wang, Arnon Olankitwanit, Suchada Rajca, Andrzej Rajca

Research output: Contribution to journalArticle

6 Scopus citations


We report a large kinetic isotope effect at 298 K, kH/kD ≈ 150, associated with an intramolecular 1,5-hydrogen atom transfer (1,5-HAT) in the decay of a PEGylated carbazyl (aminyl) radical in solution. The experimental observations surprisingly combine the hallmarks of tunneling, including large KIEs and unusual activation parameters, with linear Arrhenius and Eyring plots over an exceptionally wide temperature range of 116 K.

Original languageEnglish (US)
Pages (from-to)7144-7147
Number of pages4
JournalJournal of the American Chemical Society
Issue number21
StatePublished - May 31 2017


ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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