1. Centre for Science at Extreme Conditions, School of Chemistry, The University of Edinburgh, King’s Buildings, West Mains Road, Edinburgh EH9 3FJ, U.K.
2. ISIS Facility, STFC, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, U.K.
3. The Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, U.K.