SYNTHESIS OF MANGANESE AND RUTHENIUM COMPLEXES OF PHENYL TRIMETHYLSILANE, DIPHENYLTETRAMETHYLDISILANE AND POLY(METHYLPHENYLSILANE)

The reaction of [Mn(CO)(5)](+) with phenyltrimethylsilane (L-1) or dip henyltetramethyldisilane (L-2) affords [Mn(CO)(3)L-1][BF4] and [Mn(CO) (3)L-2][BF4] in which the silane ligand is eta(6)-coordinated via an a romatic ring. A similar procedure using poly(methylphenylsilane) (PMPS ) as the ligand resulted in very low incorporation of Mn(CO)(3)(+) fra gments into the polymer. A loading of 10% was achieved, however, by us ing [(naphthalene)Mn(CO)(3)][BF4] as a Mn(CO)(3)(+) transfer reagent t o form the copolymer enyltricarbonylmanganesetetrafluoroborate)silane) . Reaction of [(p-cymene)Ru(O3SCF3)(2)](x) (p-cymene = 4-isopropyltolu ene) with L-1 affords air sensitive [Ru(p-cymene)L-1][O3SCF3](2). High er yields of the related complex [Ru(p-cymene)L-1][BF4](2) were obtain ed by addition of L-1 to a mixture of [(p-cymene)RuCl2](2) and AgBF4. Only poorly characterised copolymers containing ruthenium were obtaine d by analogous reactions with PMPS. (C) 1997 Elsevier Science S.A.