1. Department of Chemistry, University of Manchester, Manchester M13 9PL, U.K.
2. Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K.
3. Diamond Light Source, Harwell Science Campus, Oxfordshire OX11 0DE, U.K.
4. ISIS Facility, Science and Technology Facilities Council (STFC), Rutherford Appleton Laboratory, Didcot OX11 0QX, U.K.