1. Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
2. Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
3. Thomas
Young Centre, University College London, Gower Street, London WC1E 6BT, United Kingdom
4. Diamond Light Source Ltd., Diamond
House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom