Quantum influences in the diffusive motion of pyrrole on Cu(111)

Barbara A.J. Lechner, Holly Hedgeland, John Ellis, William Allison, Marco Sacchi, Stephen J. Jenkins, B. J. Hinch

Research output: Contribution to journalArticle

12 Scopus citations


Classical diffusion - quantum barrier: On Cu(111), pyrrole diffuses in channels, hopping between adjacent bridge sites over a barrier above hollow sites. The motion of the center of mass can be described classically; however, the activation barrier arises from the quantum character of internal vibrational modes that are largely unexcited during the motion. The unique helium spin-echo experiment is indicated by the green sphere and arrows.

Original languageEnglish (US)
Pages (from-to)5085-5088
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number19
Publication statusPublished - May 3 2013


All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)


  • ab initio calculations
  • adsorption
  • single-molecule studies
  • surface chemistry
  • transition states

Cite this

Lechner, B. A. J., Hedgeland, H., Ellis, J., Allison, W., Sacchi, M., Jenkins, S. J., & Hinch, B. J. (2013). Quantum influences in the diffusive motion of pyrrole on Cu(111). Angewandte Chemie - International Edition, 52(19), 5085-5088. https://doi.org/10.1002/anie.201208868