摘要:
Reaction of trans-[Pt(H)(2)(PCy3)(2)], 1, with [60]fullerene at room temperature affords [Pt(PCy3)(2)(eta(2)-C-60)], 2, in nearly quantitative yield. The most probable reaction pattern is the insertion of a fullerene 6,6 junction onto a Pt-H bond yielding an eta(1) alkyl derivative which, after hydrogen extrusion, gives 2. On the other hand, addition of 1 to different electron-deficient olefins, such as dimethyl maleate and fumarate, furnishes mixtures of both eta(1) metal-alkyl and eta(2) metal-olefin derivatives. If tetrachloroethylene is used as 2 pi component, trans-[PtCl(H)(PCy3)(2)] forms exclusively. (C) 1997 Elsevier Science S.A.