Time resolved infrared spectroscopy of a C-F bond activation reaction

INOR 791

Matthew C. Asplund, Matt_Asplund@BYU.edu, Jared A. Jakeman, and Aaron M. Johnson, amjohnson@berkeley.edu. Department of Chemistry and Biochemistry, Brigham Young University, C100 BNSN, Provo, UT 84602
The activation of C-F bonds is of particular interest because of the stability of these bonds, and the resulting need for high energy intermediates. The first reported C-F bond activation by Richmond and co-workers involved a tungsten carbonyl with a tethered perfluorobenzene ring. The mechanism of this reaction has recently been studied, with a focus on understanding the role of structural and electronic factors on the reactivity. Nanosecond time-resolved FT-IR spectroscopy was used to measure key intermediates in the pathway. Comparisons to a model system, tungsten hexacarbonyl, have been made. Finally comparison to ab initio computations shows the importance of transiently complexed solvent molecules in the reaction pathway.
 

Organometallics
8:30 AM-11:30 AM, Wednesday, 16 March 2005 Convention Center -- Room 1B, Oral

Division of Inorganic Chemistry

The 229th ACS National Meeting, in San Diego, CA, March 13-17, 2005