Rhenium and tungsten oxo and imido complexes with N-heterocyclic carbenes

CHED 1239

Lori A. Watson, watsolo@earlham.edu, Felicia Gray, and Elizabeth Yoder. Department of Chemistry, Earlham College, 801 National Road West, Richmond, IN 47374
Unsaturated organometallic complexes, those with fewer than 18 electrons around the metal, can be used as catalysts in a variety of reactions such as C-F activation which converts fluorocarbons to more environmentally benign compounds and metathesis polymerization which is used to synthesize of a variety of polymers. Here we explore N-heterocyclic carbene (NHC) stabilized oxo compounds of tungsten and rhenium and the reactivity of the resultant complexes toward C-X activation. The synthesis and characterization of the chloro-oxo-tungsten complex below is reported along with progress toward additional analogues.