Synthesis, Characterization and Catalytic Activity of NHC Gold(I) Polyoxometalate Complexes

International audienceThe new hybrid NHC gold(I) acetonitrile polyoxometalate complexes {[Au(IPr)(MeCN)+][H+]3[SiW12O404−] (1), [Au(IPr)(MeCN)+][H+]2[PMo12O403−] (2), [Au(IPr)(MeCN)+][H+]5[P2W18O626−] (3), [Au(IPr)(MeCN)+][H+]2[PW12O403−] (4), [Au(IPr)(MeCN)+]3[PMo12O403−] (5) and [Au(ItBu)(MeCN)+] [H+]2[PMo12O403−] (6)} were readily synthesized in high yield and characterized by NMR and MS‐ESI spectroscopy. In a preliminary catalytic study, their activity was assessed under heterogeneous conditions for the ene‐yne rearrangement reaction and a cycloisomerization reaction. Additionally, their reactivity and recyclability were tested in the hydration of alkynes under homogeneous conditions