Cationic two-coordinate gold containing a p-alkene, p-internal alkyne, or p-allene ligand and the N-heterocyclic carbene ligand 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr) were isolated from reaction of the appropriate p-ligand with a mixture of (IPr)AuCl and AgSbF6.  In comparison, thermally unstable (IPr)Au complexes containing a p-terminal arylacetylene ligand were generated in situ at �60 �C.   Warming these complexes to 0 �C led to C(sp)�H bond cleavage and formation of dinuclear gold(I) s,p-acetylide complexes of the form {[(IPr)Au]2(?1,?2-C=CAr)}+ SbF6� . 

Cationic, two-coordinate gold π-complexes containing an N-heterocyclic carbene ligand

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.