Abstract

Treatment of (C8H12)Rh(C5H7O2) with triphenylmethyl tetrafluoroborate in methylene chloride followed by the addition of ligand (L) gives the cationic olefin complexes [C8H12RhL2]BF4(L = Ph3P, Ph2EtP, PhEt2P, or Ph3As). Other salts [(C5H7O2)PdL2]BF4 have been prepared from (C5H7O2)2Pd by the same general reaction [L = Ph3P, Ph2EtP, PhEt2P, (p-MeC6H4)3P, or Ph3As]. In contrast, the neutral complexes Pd(Ph3Sb)n, Pd(Ph3P)n, and Pd(Ph3As)n(n= 2–3) are the products from the reaction of (C5H7O2)2Pd with fluoroboric acid followed by the addition of the appropriate ligand. The 1H n.m.r. spectra of the rhodium(I) and palladium(II) salts are discussed. Treatment of the platinum(II) salt [C8H12Pt(C5H7O2)]BF4 with 2,2′-bipyridyl(bipy) leads to the σ–π complex [(C8H12·C5H7O2)Pt(bipy)]BF4.

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