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Journal Article

Internal proton transfer leading to stable zwitterionic structures in a neutral isolated peptide.

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Meijer,  Gerard
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Helden,  Gert von
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Citation

Rijs, A. M., Ohanessian, G., Oomens, J., Meijer, G., Helden, G. v., & Compagnon, I. (2010). Internal proton transfer leading to stable zwitterionic structures in a neutral isolated peptide. Angewandte Chemie International Edition, 49(13), 2332-2335. doi:10.1002/anie.200906503.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-F62C-5
Abstract
No solution for the zwitterion: An acid- and base-containing pentapeptide was designed to explore the possibility of zwitterion formation in the gas phase, in the absence of a net charge. Internal proton transfer between peptide side chains in vacuo gave a zwitterion (highlighted in yellow; the canonical form is highlighted in blue), which was identified by gas-phase IR spectroscopy.