1. Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, U.K.
2. Diamond Light Source, Harwell Science and Innovation
Campus, Didcot, Oxfordshire OX11 0DE, U.K.
3. Department of Chemistry, Molecular Sciences Research Hub, White City Campus, Imperial College London, 82 Wood Lane, London, W12 7SL, U.K.
4. Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany