1. Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK
2. Centre for Pulse EPR Spectroscopy (PEPR), Imperial College London, White City Campus, London, W12 0BZ, UK
3. Department of Chemistry, Saarland University, Campus B2.2, Saarbrücken, Germany
4. London Centre for Nanotechnology, University College London, 17–19 Gordon Street, London WC1H 0AH, UK
5. Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Piazzale Aldo Moro 5, 00185 Rome, Italy