1 Department of Molecular Physics, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195, Berlin, Germany.
2 Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany.
3 Hunter College, The City University of New York, 695 Park Ave, New York, NY 10065, USA.
4 Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany.
5 Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany. peter.seeberger@mpikg.mpg.de.
6 Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany. peter.seeberger@mpikg.mpg.de.
7 Department of Molecular Physics, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195, Berlin, Germany. kevin.pagel@fu-berlin.de.
8 Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany. kevin.pagel@fu-berlin.de.
The original version of this Article contained an error in Fig. 1, in which an oxygen atom was missing from the 'Acetoxonium type' structure. This has been corrected in both the PDF and HTML versions of the Article.