S1 Supporting Information for Tandem Ammonia Borane Dehydrogenation/Alkene Hydrogenation Mediated by [Pd(NHC)(PR 3 )] (NHC= N-heterocyclic carbene) Catalysts Caroline E. Hartmann, Václav Jurčík, Olivier Songis and Catherine S. J. Cazin* School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK; Fax: +44 (0)1334 463808. E-mail: cc111@st-andrews.ac.uk Electronic Supplementary Material (ESI) for Chemical Communications This journal is © The Royal Society of Chemistry 2013