Mike Slaney

 
 
Mike was born in Chatham, New Brunswick and raised just south in Oromocto.  He compl
eted his undergraduate program at the University of New Brunswick, where he graduated with a BSc.  While attending UNB, he completed his honours project entitled “Laser Induced Fluorescence of Rhodium Monophosphide” under the supervision of Dr. Allan Adam in Laser Spectroscopy.  Mike also spent a summer during his third year working with Dr. Martin Cowie at the University of Alberta.  His summer project involved synthesizing a series of binuclear precursors in which the typical bridging Ph2PCH2PPh2 (dppm) groups are substituted by Et2PCH2PEt2 (depm).  The ethyl groups are more basic, stabilizing cationic intermediates, and much smaller than the phenyl groups of dppm allowing much easier access of the fluoroolefins to the pair of metals, thereby facilitating the C–F activation process.
 

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In the fall of 2006, Mike returned to the University of Alberta to continue his education under the supervision of Dr. Cowie.  His current research topics include:


(1)  Investigating fluoroolefin activation by exchanging the methyl ligand of [Ir2(CH3)(CO)2(dppm)2] (1) by hydride and silyl groups, which can function as “internal fluoride abstractors”.

(2)  Using the previously synthesized depm precursors to investigate their reactivity with fluoroolefins.

(3)  Attempting to develop catalytic process for the conversion of tetrafluoroethylene into trifluoroethylene, trifluoroethylene into either cis-difluoroethylene or two isomers of difluoropropene, and
cis-difluoroethylene into 2-fluoropropene.


The activation of strong carbon-fluorine bonds, in order to bring about the selective functionalization of fluoro-carbons, yielding products having applications as pharmaceuticals, pesticides, polymers, and refrigerants, and also for the conversion of environmentally harmful chlorofluorocarbons, represents an important, yet formidable challenge.  We have established a new strategy for the selective activation of C-F bonds in bridging fluoroolefin ligands, in which a pair of metals act in a cooperative manner to activate the fluoroolefin substrates.  The fluoroolefin-bridged
complex 1 product, readily yields the corresponding fluorovinyl (2 and 3) complexes upon the addition of Me3SiOTf, HOTf, or even water!

Scheme 1 – Reactivity of Fluoroolefin–Bridged Complexes

Complex 2 can in turn convert the fluoroolefin moieties into to the corresponding cis-difluoroethylene (4), or a mixture of 1,2-difluoropropene (5) and 2,3-difluoropropene (6) by reactions with H2 or CO, respectively.  Using this strategy, we have also succeeded in transforming tetrafluoroethylene into trifluoroethylene and 1,1-difluoroethylene into 2-fluoropropene.

Figure 1 –Fluoolefin–Bridged Di–Ir System

Scheme 2 – Generated Products