1. School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS81TS, U.K.
2. Chemical Imaging Facility, School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS81TS, U.K.
3. ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot OX11 0QX, U.K.