Nickel, Palladium, and Platinum Complexes Derived from OFCOT

NICKEL, PALLADIUM, AND PLATINUM COMPLEXES DERIVED FROM OFCOT 

Although reaction of [Pt(COD)2] alone with OFCOT did not produce any metal-fluorocarbon products, addition of two molar equivalents of PPh3, AsPh3, or t-BuNC to [Pt(COD)2] followed by addition of OFCOT yielded 

It was hoped that reductive elimination of the fluorocarbon ligand from compounds 96 might afford the elusive valence isomer of OFCOT, perfluo-rosemibullvalene 98. AH attempts to induce formation of 98 from these Pt(II) 

Similarly, reaction of tris(dibenzylideneacetone)dipalladium with two equivalents of f-butylisocyanide per Pd atom, followed by addition of OFCOT, leads to an analogous ring-closed product 99a. Reaction of [Pd(PPh3)4] with OFCOT afforded the phosphine analogue 99b (174). No attempts have been made to probe any further chemistry of these molecules. 

No evidence was obtained for oxidative addition of a C—F bond to the nickel center, in contrast to the reported reaction of perfluorobenzene with [Ni(COD)(PEt3)2] (see Section III,F). 

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