1. Biomedical Sciences Research Complex and Centre of Magnetic Resonance University of St Andrews
2. St Andrews KY16 9ST
3. UK
4. EaStCHEM School of Chemistry
5. University of St Andrews
6. Institute of Physical and Theoretical Chemistry and Center for Biomolecular Magnetic Resonance
7. Goethe-University Frankfurt am Main
8. D-60438 Frankfurt am Main
9. Germany