REACTIONS INVOLVING TRANSITION METALS. XIX. SOME REACTIONS OF PERFLUORONORBORNADIENE WITH LOW VALENT TRANSITION METAL COMPLEXES

Article abstract of DOI:10.1016/S0022-328X(00)83411-7

Perfluoronorbornadiene reacts with the compounds to give the adducts <(C7F8)M(PPh3)2> and <(C7F8)IrCl(CO)(PMePh2)2> in which one of the double bonds is coordinated to the metal atom.The platinum complex reacts further with to give <(C7F8)2> having both double bonds coordinated to a Pt atom.The carbonylmetal anions -> react to form the mono-substitution products <(C7F7)M> (M = Mn(CO)5, Re(CO)5, Ir(CO)2(PPh3)2, Rh(CO)2(PPh3)2, but the use of an excess of ^- leads to substitution of one fluorine atom on each of the double bonds.The complex having M = Mn(CO)5 reacts with to afford the derivative <(C7F7)>, and the compound where M = Ir(CO)2(PPh3)2 undergoes an oxidative addition reaction with acetyl chloride.Oxidative coupling products have been isolated on UV irradiation of a mixture of perfluoronorbornadiene and 4-CH2=CRCH=CH2)(CO)3> (R = H, Me), and under similar conditions the reaction with Fe(CO)5 affords <(C7F8)Fe(CO)4> in very low yield.